Common Weakness Enumeration
CWE-119
Weakness DiscouragedImproper Restriction of Operations within the Bounds of a Memory Buffer
Abstraction: Class · Status: Stable
The product performs operations on a memory buffer, but it reads from or writes to a memory location outside the buffer's intended boundary.
Dimensions
- Behavior-Type: Restriction of Operations
- Behavior-Property: Improper
- Resource-Type: Memory Buffer
- Resource-Property: within the Bounds
Mapping guidance
CWE-119 is commonly misused in low-information vulnerability reports when lower-level CWEs could be used instead, or when more details about the vulnerability are available.
Look at CWE-119's children and its descendants, which should generally be a better fit. Since this issue is resultant from other weaknesses, conduct root cause analysis to determine the error(s) that led to operations outside of intended buffer boundaries.
Modes of introduction
Implementation
Detection methods
Automated Static Analysis
This weakness can often be detected using automated static analysis tools. Many modern tools use data flow analysis or constraint-based techniques to minimize the number of false positives.
Automated static analysis generally does not account for environmental considerations when reporting out-of-bounds memory operations. This can make it difficult for users to determine which warnings should be investigated first. For example, an analysis tool might report buffer overflows that originate from command line arguments in a program that is not expected to run with setuid or other special privileges.
Effectiveness: High
Detection techniques for buffer-related errors are more mature than for most other weakness types.
Automated Dynamic Analysis
This weakness can be detected using dynamic tools and techniques that interact with the software using large test suites with many diverse inputs, such as fuzz testing (fuzzing), robustness testing, and fault injection. The software's operation may slow down, but it should not become unstable, crash, or generate incorrect results.
Automated Dynamic Analysis
Use tools that are integrated during compilation to insert runtime error-checking mechanisms related to memory safety errors, such as AddressSanitizer (ASan) for C/C++ [REF-1518].
Effectiveness: Moderate
Crafted inputs are necessary to reach the code containing the error, such as generated by fuzzers. Also, these tools may reduce performance, and they only report the error condition - not the original mistake that led to the error.
Automated Static Analysis - Binary or Bytecode
According to SOAR [REF-1479], the following detection techniques may be useful:
Cost effective for partial coverage:
Binary / Bytecode Quality Analysis
Bytecode Weakness Analysis - including disassembler + source code weakness analysis
Binary Weakness Analysis - including disassembler + source code weakness analysis
Effectiveness: SOAR Partial
Manual Static Analysis - Binary or Bytecode
According to SOAR [REF-1479], the following detection techniques may be useful:
Cost effective for partial coverage:
Binary / Bytecode disassembler - then use manual analysis for vulnerabilities & anomalies
Effectiveness: SOAR Partial
Dynamic Analysis with Automated Results Interpretation
According to SOAR [REF-1479], the following detection techniques may be useful:
Cost effective for partial coverage:
Web Application Scanner
Web Services Scanner
Database Scanners
Effectiveness: SOAR Partial
Dynamic Analysis with Manual Results Interpretation
According to SOAR [REF-1479], the following detection techniques may be useful:
Cost effective for partial coverage:
Fuzz Tester
Framework-based Fuzzer
Effectiveness: SOAR Partial
Manual Static Analysis - Source Code
According to SOAR [REF-1479], the following detection techniques may be useful:
Cost effective for partial coverage:
Focused Manual Spotcheck - Focused manual analysis of source
Manual Source Code Review (not inspections)
Effectiveness: SOAR Partial
Automated Static Analysis - Source Code
According to SOAR [REF-1479], the following detection techniques may be useful:
Highly cost effective:
Source code Weakness Analyzer
Context-configured Source Code Weakness Analyzer
Cost effective for partial coverage:
Source Code Quality Analyzer
Effectiveness: High
Architecture or Design Review
According to SOAR [REF-1479], the following detection techniques may be useful:
Highly cost effective:
Formal Methods / Correct-By-Construction
Cost effective for partial coverage:
Inspection (IEEE 1028 standard) (can apply to requirements, design, source code, etc.)
Effectiveness: High
Notes
Applicable Platform
It is possible in any programming languages without memory management support to attempt an operation outside of the bounds of a memory buffer, but the consequences will vary widely depending on the language, platform, and chip architecture.
Content history
Submission: PLOVER
· 2006-07-19
· CWE Draft 3
Contribution: Abhi Balakrishnan
· 2024-02-29
· CWE 4.15
Provided diagram to improve CWE usability
Modification: Eric Dalci
· Cigital
· 2008-07-01
· CWE 1.0
updated Time_of_Introduction
Modification:
· Veracode
· 2008-08-15
· CWE 1.0
Suggested OWASP Top Ten 2004 mapping
Modification: CWE Content Team
· MITRE
· 2008-09-08
· CWE 1.0
updated Description, Relationships, Taxonomy_Mappings
Modification: CWE Content Team
· MITRE
· 2008-10-14
· CWE 1.0.1
updated Relationships
Modification: CWE Content Team
· MITRE
· 2008-11-24
· CWE 1.1
updated Relationships, Taxonomy_Mappings
Modification: CWE Content Team
· MITRE
· 2009-01-12
· CWE 1.2
updated Applicable_Platforms, Common_Consequences, Demonstrative_Examples, Likelihood_of_Exploit, Name, Potential_Mitigations, References, Relationships
Modification: CWE Content Team
· MITRE
· 2009-03-10
· CWE 1.3
updated Potential_Mitigations
Modification: CWE Content Team
· MITRE
· 2009-05-27
· CWE 1.4
updated Demonstrative_Examples
Modification: CWE Content Team
· MITRE
· 2009-07-27
· CWE 1.5
updated Observed_Examples
Modification: CWE Content Team
· MITRE
· 2009-10-29
· CWE 1.6
updated Applicable_Platforms, Common_Consequences, Demonstrative_Examples, Description, Relationships, Time_of_Introduction
Modification: CWE Content Team
· MITRE
· 2009-12-28
· CWE 1.7
updated Common_Consequences, Demonstrative_Examples, Detection_Factors, Observed_Examples
Modification: CWE Content Team
· MITRE
· 2010-02-16
· CWE 1.8
updated Alternate_Terms, Applicable_Platforms, Demonstrative_Examples, Detection_Factors, Potential_Mitigations, References, Relationships, Taxonomy_Mappings
Modification: CWE Content Team
· MITRE
· 2010-06-21
· CWE 1.9
updated Potential_Mitigations
Modification: CWE Content Team
· MITRE
· 2010-09-27
· CWE 1.10
updated Potential_Mitigations, Relationships
Modification: CWE Content Team
· MITRE
· 2010-12-13
· CWE 1.11
updated Name
Modification: CWE Content Team
· MITRE
· 2011-03-29
· CWE 1.12
updated Relationships
Modification: CWE Content Team
· MITRE
· 2011-06-01
· CWE 1.13
updated Common_Consequences, Relationships
Modification: CWE Content Team
· MITRE
· 2011-09-13
· CWE 2.1
updated Relationships, Taxonomy_Mappings
Modification: CWE Content Team
· MITRE
· 2012-05-11
· CWE 2.2
updated Demonstrative_Examples, Potential_Mitigations, References, Relationships
Modification: CWE Content Team
· MITRE
· 2012-10-30
· CWE 2.3
updated Potential_Mitigations
Modification: CWE Content Team
· MITRE
· 2013-02-21
· CWE 2.4
updated Demonstrative_Examples
Modification: CWE Content Team
· MITRE
· 2014-02-18
· CWE 2.6
updated Potential_Mitigations, References
Modification: CWE Content Team
· MITRE
· 2014-07-30
· CWE 2.8
updated Detection_Factors, Relationships, Taxonomy_Mappings
Modification: CWE Content Team
· MITRE
· 2015-12-07
· CWE 2.9
updated Relationships
Modification: CWE Content Team
· MITRE
· 2017-01-19
· CWE 2.10
updated Relationships
Modification: CWE Content Team
· MITRE
· 2017-05-03
· CWE 2.11
updated Relationships
Modification: CWE Content Team
· MITRE
· 2017-11-08
· CWE 3.0
updated Applicable_Platforms, Common_Consequences, Demonstrative_Examples, Observed_Examples, References, Relationships, Taxonomy_Mappings
Modification: CWE Content Team
· MITRE
· 2018-03-27
· CWE 3.1
updated References
Modification: CWE Content Team
· MITRE
· 2019-01-03
· CWE 3.2
updated Relationships
Modification: CWE Content Team
· MITRE
· 2019-06-20
· CWE 3.3
updated Related_Attack_Patterns, Relationships
Modification: CWE Content Team
· MITRE
· 2019-09-19
· CWE 3.4
updated References, Relationships
Modification: CWE Content Team
· MITRE
· 2020-02-24
· CWE 4.0
updated Relationships, Taxonomy_Mappings, Time_of_Introduction
Modification: CWE Content Team
· MITRE
· 2020-06-25
· CWE 4.1
updated Relationships
Modification: CWE Content Team
· MITRE
· 2020-08-20
· CWE 4.2
updated Alternate_Terms, Relationships
Modification: CWE Content Team
· MITRE
· 2020-12-10
· CWE 4.3
updated Alternate_Terms, Observed_Examples, Relationships
Modification: CWE Content Team
· MITRE
· 2021-07-20
· CWE 4.5
updated Demonstrative_Examples, Observed_Examples, Potential_Mitigations, Relationships
Modification: CWE Content Team
· MITRE
· 2022-06-28
· CWE 4.8
updated Observed_Examples, Relationships
Modification: CWE Content Team
· MITRE
· 2022-10-13
· CWE 4.9
updated Relationships, Taxonomy_Mappings
Modification: CWE Content Team
· MITRE
· 2023-01-31
· CWE 4.10
updated Alternate_Terms, Description
Modification: CWE Content Team
· MITRE
· 2023-04-27
· CWE 4.11
updated Potential_Mitigations, References, Relationships, Time_of_Introduction
Modification: CWE Content Team
· MITRE
· 2023-06-29
· CWE 4.12
updated Mapping_Notes, Relationships
Modification: CWE Content Team
· MITRE
· 2024-07-16
· CWE 4.15
updated Alternate_Terms, Background_Details, Common_Consequences, Description, Diagram
Modification: CWE Content Team
· MITRE
· 2024-11-19
· CWE 4.16
updated Description, Relationships
Modification: CWE Content Team
· MITRE
· 2025-04-03
· CWE 4.17
updated Relationships
Modification: CWE Content Team
· MITRE
· 2025-09-09
· CWE 4.18
updated Demonstrative_Examples, Detection_Factors, Functional_Areas, References
Modification: CWE Content Team
· MITRE
· 2025-12-11
· CWE 4.19
updated Applicable_Platforms, Detection_Factors, References, Weakness_Ordinalities
Modification: CWE Content Team
· MITRE
· 2026-04-30
· CWE 4.20
updated Mapping_Notes, Observed_Examples
Modification: CWE Content Team
· MITRE
· 2026-10-28
· CWE 5.0
updated Common_Consequences, Description, Dimensions, References
18609 vulnerabilities reference this CWE, most recent first.
CVE-2026-129352 (GCVE-0-2026-129352)
Vulnerability from cvelistv5 – Published: 2026-11-14 23:00 – Updated: 2026-11-14 23:00
VLAI
EPSS
VEX
Title
TRENDnet TEW-657BRM upgrade_flash.cgi stack-based overflow
Summary
A vulnerability was detected in TRENDnet TEW-657BRM 1.00.1. This issue affects some unknown processing of the file /usr/sbin/upgrade_flash.cgi. Performing a manipulation of the argument boundary results in stack-based buffer overflow. The attack is possible to be carried out remotely. The exploit is now public and may be used. The vendor explains: ""I am not able to confirm if such vulnerability exists as the product has been EOL for more than 15 years. We will send out an announcement letting customers know."
Severity
9.1 (Critical)
9.1 (Critical)
Assigner
References
5 references
| URL | Tags |
|---|---|
| https://vuldb.com/vuln/437398 | vdb-entrytechnical-description |
| https://vuldb.com/vuln/437398/cti | signaturepermissions-required |
| https://vuldb.com/cve/CVE-2026-129352 | third-party-advisory |
| https://vuldb.com/submit/1043522 | third-party-advisory |
| https://github.com/ruanyi101/router-firmware-secu… | exploitpatch |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| TRENDnet | TEW-657BRM |
Affected:
1.00.1
cpe:2.3:o:trendnet:tew-657brm_firmware:*:*:*:*:*:*:*:* |
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CVE-2026-129351 (GCVE-0-2026-129351)
Vulnerability from cvelistv5 – Published: 2026-11-14 22:30 – Updated: 2026-11-14 22:30 Unsupported When Assigned
VLAI
EPSS
VEX
Title
TRENDnet TEW-657BRM mini_httpd setup.cgi sprintf out-of-bounds write
Summary
A security vulnerability has been detected in TRENDnet TEW-657BRM 1.00.1. This vulnerability affects the function sprintf of the file /setup.cgi of the component mini_httpd. Such manipulation leads to out-of-bounds write. The attack can be executed remotely. The exploit has been disclosed publicly and may be used. The vendor explains: ""I am not able to confirm if such vulnerability exists as the product has been EOL for more than 15 years. We will send out an announcement letting customers know." This vulnerability only affects products that are no longer supported by the maintainer.
Severity
Assigner
References
5 references
| URL | Tags |
|---|---|
| https://vuldb.com/vuln/437397 | vdb-entrytechnical-description |
| https://vuldb.com/vuln/437397/cti | signaturepermissions-required |
| https://vuldb.com/cve/CVE-2026-129351 | third-party-advisory |
| https://vuldb.com/submit/1043518 | third-party-advisory |
| https://github.com/ruanyi101/router-firmware-secu… | exploit |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| TRENDnet | TEW-657BRM |
Affected:
1.00.1
cpe:2.3:o:trendnet:tew-657brm_firmware:*:*:*:*:*:*:*:* |
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CVE-2026-129264 (GCVE-0-2026-129264)
Vulnerability from cvelistv5 – Published: 2026-11-14 17:00 – Updated: 2026-11-14 17:00
VLAI
EPSS
VEX
Title
sox_ng VOC Decoder voc.c read_samples_voc out-of-bounds write
Summary
A security vulnerability has been detected in sox_ng up to 14.8.1. Affected by this issue is the function read_samples_voc of the file src/voc.c of the component VOC Decoder. Such manipulation leads to out-of-bounds write. The attack can be executed remotely. The exploit has been disclosed publicly and may be used. The name of the patch is 0b40408b. A patch should be applied to remediate this issue. The vendor was contacted early, responded in a very professional manner and quickly released a fixed version of the affected product.
Severity
Assigner
References
7 references
| URL | Tags |
|---|---|
| https://vuldb.com/vuln/437307 | vdb-entrytechnical-description |
| https://vuldb.com/vuln/437307/cti | signaturepermissions-required |
| https://vuldb.com/cve/CVE-2026-129264 | third-party-advisory |
| https://vuldb.com/submit/1043408 | third-party-advisory |
| https://codeberg.org/sox_ng/sox_ng/issues/873 | broken-linkissue-tracking |
| https://codeberg.org/suyuanwang/Test_sox/ | broken-linkexploit |
| https://codeberg.org/sox_ng/sox_ng/commit/0b40408b | patch |
Impacted products
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CVE-2026-129250 (GCVE-0-2026-129250)
Vulnerability from cvelistv5 – Published: 2026-11-14 11:30 – Updated: 2026-11-14 11:30
VLAI
EPSS
VEX
Title
Edimax BR6478ACV2 webs formPPTPSetup buffer overflow
Summary
A security vulnerability has been detected in Edimax BR6478ACV2 1.23. The impacted element is the function formPPTPSetup of the file webs. The manipulation of the argument pptpUserName leads to buffer overflow. It is possible to initiate the attack remotely. The exploit has been disclosed publicly and may be used. The vendor was contacted early about this disclosure but did not respond in any way.
Severity
9.9 (Critical)
9.9 (Critical)
Assigner
References
5 references
| URL | Tags |
|---|---|
| https://vuldb.com/vuln/437280 | vdb-entrytechnical-description |
| https://vuldb.com/vuln/437280/cti | signaturepermissions-required |
| https://vuldb.com/cve/CVE-2026-129250 | third-party-advisory |
| https://vuldb.com/submit/1033650 | third-party-advisory |
| https://lavender-bicycle-a5a.notion.site/EDIMAX-B… | exploit |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| Edimax | BR6478ACV2 |
Affected:
1.23
cpe:2.3:a:edimax:br6478acv2:*:*:*:*:*:*:*:* |
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CVE-2026-124996 (GCVE-0-2026-124996)
Vulnerability from cvelistv5 – Published: 2026-11-09 21:45 – Updated: 2026-11-14 02:23 X_Open Source
VLAI
EPSS
VEX
Title
Turboderp-org ExLlamaV3 hash-MoE routing routing.cu routing_sel_norm_kernel out-of-bounds
Summary
A weakness has been identified in Turboderp-org ExLlamaV3 up to 1.6.3. The impacted element is the function routing_sel_norm_kernel of the file exllamav3/exllamav3_ext/routing.cu of the component hash-MoE routing. This manipulation of the argument gate.tid2eid causes out-of-bounds read. Remote exploitation of the attack is possible. Upgrading to version 1.6.4 is sufficient to resolve this issue. Patch name: c9a57ae832a3035e264e0a412e1daf4ebb699b98. Upgrading the affected component is recommended.
Severity
SSVC
Exploitation: poc
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-11-14 02:22 UTC
Assigner
References
8 references
| URL | Tags |
|---|---|
| https://vuldb.com/vuln/433166 | vdb-entrytechnical-description |
| https://vuldb.com/vuln/433166/cti | signaturepermissions-required |
| https://vuldb.com/cve/CVE-2026-124996 | third-party-advisory |
| https://vuldb.com/submit/1040627 | third-party-advisory |
| https://github.com/turboderp-org/exllamav3/issues/526 | issue-tracking |
| https://github.com/turboderp-org/exllamav3/commit… | patch |
| https://github.com/turboderp-org/exllamav3/releas… | patch |
| https://github.com/turboderp-org/exllamav3/ | product |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| Turboderp-org | ExLlamaV3 |
Affected:
1.6.0
Affected: 1.6.1 Affected: 1.6.2 Affected: 1.6.3 Unaffected: 1.6.4 cpe:2.3:a:turboderp-org:exllamav3:*:*:*:*:*:*:*:* |
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CVE-2026-124994 (GCVE-0-2026-124994)
Vulnerability from cvelistv5 – Published: 2026-11-09 20:45 – Updated: 2026-11-10 16:12 X_Open Source
VLAI
EPSS
VEX
Title
Turboderp-org ExLlamaV3 NGramEmbedding ngram.cu ngram_dequant out-of-bounds
Summary
A security flaw has been discovered in Turboderp-org ExLlamaV3 up to 1.6.3. The affected element is the function ngram_dequant of the file exllamav3/exllamav3_ext/ngram.cu of the component NGramEmbedding. The manipulation of the argument head_bias results in out-of-bounds read. The attack may be launched remotely. The exploit has been released to the public and may be used for attacks. Upgrading to version 1.6.4 is sufficient to fix this issue. The patch is identified as c9a57ae832a3035e264e0a412e1daf4ebb699b98. It is suggested to upgrade the affected component.
Severity
SSVC
Exploitation: poc
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-11-10 16:11 UTC
Assigner
References
9 references
| URL | Tags |
|---|---|
| https://vuldb.com/vuln/433165 | vdb-entrytechnical-description |
| https://vuldb.com/vuln/433165/cti | signaturepermissions-required |
| https://vuldb.com/cve/CVE-2026-124994 | third-party-advisory |
| https://vuldb.com/submit/1040626 | third-party-advisory |
| https://github.com/turboderp-org/exllamav3/issues/525 | issue-tracking |
| https://github.com/user-attachments/files/3359884… | exploit |
| https://github.com/turboderp-org/exllamav3/commit… | patch |
| https://github.com/turboderp-org/exllamav3/releas… | patch |
| https://github.com/turboderp-org/exllamav3/ | product |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| Turboderp-org | ExLlamaV3 |
Affected:
1.6.0
Affected: 1.6.1 Affected: 1.6.2 Affected: 1.6.3 Unaffected: 1.6.4 cpe:2.3:a:turboderp-org:exllamav3:*:*:*:*:*:*:*:* |
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CVE-2026-124586 (GCVE-0-2026-124586)
Vulnerability from cvelistv5 – Published: 2026-11-09 09:15 – Updated: 2026-11-10 17:51
VLAI
EPSS
VEX
Title
Tencent RapidJSON diyfp.h GetCachedPowerByIndex out-of-bounds
Summary
A vulnerability was determined in Tencent RapidJSON 1.1.0. Impacted is the function GetCachedPowerByIndex in the library include/rapidjson/internal/diyfp.h. This manipulation of the argument decimalPosition causes out-of-bounds read. It is possible to initiate the attack remotely. The exploit has been publicly disclosed and may be utilized. The project was informed of the problem early through an issue report but has not responded yet.
Severity
SSVC
Exploitation: poc
Automatable: yes
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-11-10 16:41 UTC
Assigner
References
6 references
| URL | Tags |
|---|---|
| https://vuldb.com/vuln/433010 | vdb-entrytechnical-description |
| https://vuldb.com/vuln/433010/cti | signaturepermissions-required |
| https://vuldb.com/cve/CVE-2026-124586 | third-party-advisory |
| https://vuldb.com/submit/1039172 | third-party-advisory |
| https://github.com/Tencent/rapidjson/issues/2405 | exploitissue-tracking |
| https://github.com/Tencent/rapidjson/ | product |
Impacted products
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CVE-2026-124563 (GCVE-0-2026-124563)
Vulnerability from cvelistv5 – Published: 2026-11-09 03:45 – Updated: 2026-11-13 03:42 Unsupported When Assigned
VLAI
EPSS
VEX
Title
D-Link DIR-878 HNAP SetWanSettings buffer overflow
Summary
A security flaw has been discovered in D-Link DIR-878 1.20B05. Affected by this vulnerability is the function SetWanSettings of the component HNAP Handler. The manipulation of the argument Primary/Secondary results in buffer overflow. The attack may be launched remotely. The exploit has been released to the public and may be used for attacks. This vulnerability only affects products that are no longer supported by the maintainer.
Severity
SSVC
Exploitation: none
Automatable: yes
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-11-13 03:41 UTC
Assigner
References
6 references
| URL | Tags |
|---|---|
| https://vuldb.com/vuln/432895 | vdb-entrytechnical-description |
| https://vuldb.com/vuln/432895/cti | signaturepermissions-required |
| https://vuldb.com/cve/CVE-2026-124563 | third-party-advisory |
| https://vuldb.com/submit/1035619 | third-party-advisory |
| https://github.com/Zimo-666/DIR-878-cves/tree/mai… | broken-linkexploit |
| https://www.dlink.com/ | product |
Impacted products
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CVE-2026-124562 (GCVE-0-2026-124562)
Vulnerability from cvelistv5 – Published: 2026-11-09 03:30 – Updated: 2026-11-09 14:07 Unsupported When Assigned
VLAI
EPSS
VEX
Title
D-Link DIR-878 HNAP SetWanSettings buffer overflow
Summary
A vulnerability was identified in D-Link DIR-878 1.20B05. Affected is the function SetWanSettings of the component HNAP Handler. The manipulation of the argument ConfigDNS/Primary/ConfigDNS/Secondary leads to buffer overflow. The attack may be initiated remotely. The exploit is publicly available and might be used. This vulnerability only affects products that are no longer supported by the maintainer.
Severity
SSVC
Exploitation: none
Automatable: yes
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-11-09 14:07 UTC
Assigner
References
6 references
| URL | Tags |
|---|---|
| https://vuldb.com/vuln/432894 | vdb-entrytechnical-description |
| https://vuldb.com/vuln/432894/cti | signaturepermissions-required |
| https://vuldb.com/cve/CVE-2026-124562 | third-party-advisory |
| https://vuldb.com/submit/1035618 | third-party-advisory |
| https://github.com/Zimo-666/DIR-878-cves/tree/mai… | broken-linkexploit |
| https://www.dlink.com/ | product |
Impacted products
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CVE-2026-124561 (GCVE-0-2026-124561)
Vulnerability from cvelistv5 – Published: 2026-11-09 03:15 – Updated: 2026-11-10 17:52 Unsupported When Assigned
VLAI
EPSS
VEX
Title
D-Link DIR-878 HNAP prog.cgi SetVLANSettings stack-based overflow
Summary
A vulnerability was determined in D-Link DIR-878 1.20B05. This impacts the function SetVLANSettings of the file prog.cgi of the component HNAP Handler. Executing a manipulation of the argument VID can lead to stack-based buffer overflow. The attack can be launched remotely. The exploit has been publicly disclosed and may be utilized. This vulnerability only affects products that are no longer supported by the maintainer.
Severity
SSVC
Exploitation: poc
Automatable: yes
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-11-10 16:41 UTC
Assigner
References
6 references
| URL | Tags |
|---|---|
| https://vuldb.com/vuln/432893 | vdb-entrytechnical-description |
| https://vuldb.com/vuln/432893/cti | signaturepermissions-required |
| https://vuldb.com/cve/CVE-2026-124561 | third-party-advisory |
| https://vuldb.com/submit/1035617 | third-party-advisory |
| https://github.com/Zimo-666/DIR-878-cves/tree/mai… | broken-linkexploit |
| https://www.dlink.com/ | product |
Impacted products
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Mitigation MIT-3
Requirements
Strategy: Language Selection
- Use a language that does not allow this weakness to occur or provides constructs that make this weakness easier to avoid.
- For example, many languages that perform their own memory management, such as Java and Perl, are not subject to buffer overflows. Other languages, such as Ada and C#, typically provide overflow protection, but the protection can be disabled by the programmer.
- Be wary that a language's interface to native code may still be subject to overflows, even if the language itself is theoretically safe.
Mitigation MIT-4.1
Architecture and Design
Strategy: Libraries or Frameworks
- Use a vetted library or framework that does not allow this weakness to occur or provides constructs that make this weakness easier to avoid.
- Examples include the Safe C String Library (SafeStr) by Messier and Viega [REF-57], and the Strsafe.h library from Microsoft [REF-56]. These libraries provide safer versions of overflow-prone string-handling functions.
Mitigation MIT-10
Operation
Build and Compilation
Strategy: Environment Hardening
- Use automatic buffer overflow detection mechanisms that are offered by certain compilers or compiler extensions. Examples include: the Microsoft Visual Studio /GS flag, Fedora/Red Hat FORTIFY_SOURCE GCC flag, StackGuard, and ProPolice, which provide various mechanisms including canary-based detection and range/index checking.
- D3-SFCV (Stack Frame Canary Validation) from D3FEND [REF-1334] discusses canary-based detection in detail.
Mitigation MIT-9
Implementation
- Consider adhering to the following rules when allocating and managing an application's memory:
- Double check that the buffer is as large as specified.
- When using functions that accept a number of bytes to copy, such as strncpy(), be aware that if the destination buffer size is equal to the source buffer size, it may not NULL-terminate the string.
- Check buffer boundaries if accessing the buffer in a loop and make sure there is no danger of writing past the allocated space.
- If necessary, truncate all input strings to a reasonable length before passing them to the copy and concatenation functions.
Mitigation MIT-11
Operation
Build and Compilation
Strategy: Environment Hardening
- Run or compile the software using features or extensions that randomly arrange the positions of a program's executable and libraries in memory. Because this makes the addresses unpredictable, it can prevent an attacker from reliably jumping to exploitable code.
- Examples include Address Space Layout Randomization (ASLR) [REF-58] [REF-60] and Position-Independent Executables (PIE) [REF-64]. Imported modules may be similarly realigned if their default memory addresses conflict with other modules, in a process known as "rebasing" (for Windows) and "prelinking" (for Linux) [REF-1332] using randomly generated addresses. ASLR for libraries cannot be used in conjunction with prelink since it would require relocating the libraries at run-time, defeating the whole purpose of prelinking.
- For more information on these techniques see D3-SAOR (Segment Address Offset Randomization) from D3FEND [REF-1335].
Mitigation MIT-12
Operation
Strategy: Environment Hardening
- Use a CPU and operating system that offers Data Execution Protection (using hardware NX or XD bits) or the equivalent techniques that simulate this feature in software, such as PaX [REF-60] [REF-61]. These techniques ensure that any instruction executed is exclusively at a memory address that is part of the code segment.
- For more information on these techniques see D3-PSEP (Process Segment Execution Prevention) from D3FEND [REF-1336].
Mitigation MIT-13
Implementation
Replace unbounded copy functions with analogous functions that support length arguments, such as strcpy with strncpy. Create these if they are not available.
CAPEC-10: Buffer Overflow via Environment Variables
This attack pattern involves causing a buffer overflow through manipulation of environment variables. Once the adversary finds that they can modify an environment variable, they may try to overflow associated buffers. This attack leverages implicit trust often placed in environment variables.
CAPEC-100: Overflow Buffers
Buffer Overflow attacks target improper or missing bounds checking on buffer operations, typically triggered by input injected by an adversary. As a consequence, an adversary is able to write past the boundaries of allocated buffer regions in memory, causing a program crash or potentially redirection of execution as per the adversaries' choice.
CAPEC-123: Buffer Manipulation
An adversary manipulates an application's interaction with a buffer in an attempt to read or modify data they shouldn't have access to. Buffer attacks are distinguished in that it is the buffer space itself that is the target of the attack rather than any code responsible for interpreting the content of the buffer. In virtually all buffer attacks the content that is placed in the buffer is immaterial. Instead, most buffer attacks involve retrieving or providing more input than can be stored in the allocated buffer, resulting in the reading or overwriting of other unintended program memory.
CAPEC-14: Client-side Injection-induced Buffer Overflow
This type of attack exploits a buffer overflow vulnerability in targeted client software through injection of malicious content from a custom-built hostile service. This hostile service is created to deliver the correct content to the client software. For example, if the client-side application is a browser, the service will host a webpage that the browser loads.
CAPEC-24: Filter Failure through Buffer Overflow
In this attack, the idea is to cause an active filter to fail by causing an oversized transaction. An attacker may try to feed overly long input strings to the program in an attempt to overwhelm the filter (by causing a buffer overflow) and hoping that the filter does not fail securely (i.e. the user input is let into the system unfiltered).
CAPEC-42: MIME Conversion
An attacker exploits a weakness in the MIME conversion routine to cause a buffer overflow and gain control over the mail server machine. The MIME system is designed to allow various different information formats to be interpreted and sent via e-mail. Attack points exist when data are converted to MIME compatible format and back.
CAPEC-44: Overflow Binary Resource File
An attack of this type exploits a buffer overflow vulnerability in the handling of binary resources. Binary resources may include music files like MP3, image files like JPEG files, and any other binary file. These attacks may pass unnoticed to the client machine through normal usage of files, such as a browser loading a seemingly innocent JPEG file. This can allow the adversary access to the execution stack and execute arbitrary code in the target process.
CAPEC-45: Buffer Overflow via Symbolic Links
This type of attack leverages the use of symbolic links to cause buffer overflows. An adversary can try to create or manipulate a symbolic link file such that its contents result in out of bounds data. When the target software processes the symbolic link file, it could potentially overflow internal buffers with insufficient bounds checking.
CAPEC-46: Overflow Variables and Tags
This type of attack leverages the use of tags or variables from a formatted configuration data to cause buffer overflow. The adversary crafts a malicious HTML page or configuration file that includes oversized strings, thus causing an overflow.
CAPEC-47: Buffer Overflow via Parameter Expansion
In this attack, the target software is given input that the adversary knows will be modified and expanded in size during processing. This attack relies on the target software failing to anticipate that the expanded data may exceed some internal limit, thereby creating a buffer overflow.
CAPEC-8: Buffer Overflow in an API Call
This attack targets libraries or shared code modules which are vulnerable to buffer overflow attacks. An adversary who has knowledge of known vulnerable libraries or shared code can easily target software that makes use of these libraries. All clients that make use of the code library thus become vulnerable by association. This has a very broad effect on security across a system, usually affecting more than one software process.
CAPEC-9: Buffer Overflow in Local Command-Line Utilities
This attack targets command-line utilities available in a number of shells. An adversary can leverage a vulnerability found in a command-line utility to escalate privilege to root.