Common Weakness Enumeration
CWE-125
AllowedOut-of-bounds Read
Abstraction: Base · Status: Draft
The product reads data past the end, or before the beginning, of the intended buffer.
12313 vulnerabilities reference this CWE, most recent first.
CVE-2026-67301 (GCVE-0-2026-67301)
Vulnerability from cvelistv5 – Published: 2026-08-01 12:22 – Updated: 2026-08-03 18:23
VLAI
EPSS
VEX
Title
FreeRDP before 3.29.0 Out-of-bounds Read via Polygon async message-proxy
Summary
FreeRDP before 3.29.0 contains out-of-bounds read vulnerabilities in the async update message proxy for the PolygonSC and PolygonCB primary drawing orders. When AsyncUpdate is enabled (e.g., xfreerdp /async-update), update_message_PolygonSC() and update_message_PolygonCB() allocate a fresh points array but copy point data from the address of the order structure instead of from polygonSC->points / polygonCB->points, resulting in a client-side out-of-bounds read. A malicious or compromised RDP server sending crafted PolygonSC/PolygonCB update orders can trigger memory disclosure or a client crash.
Severity
SSVC
Exploitation: poc
Automatable: yes
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-08-03 18:23 UTC
CWE
- CWE-125 - Out-of-bounds Read
Assigner
References
3 references
| URL | Tags |
|---|---|
| https://github.com/FreeRDP/FreeRDP/security/advis… | vendor-advisory |
| https://github.com/FreeRDP/FreeRDP/commit/5370fb2… | patch |
| https://www.vulncheck.com/advisories/freerdp-befo… | third-party-advisory |
Impacted products
Date Public
2026-07-15 00:00
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CVE-2026-67291 (GCVE-0-2026-67291)
Vulnerability from cvelistv5 – Published: 2026-08-01 12:22 – Updated: 2026-08-03 14:56
VLAI
EPSS
VEX
Title
FreeRDP before 3.29.0 Heap Out-of-Bounds Read via GLYPH_FRAGMENT_ADD
Summary
FreeRDP before 3.29.0 (affected versions <= 3.28.0) contains a heap out-of-bounds read in update_process_glyph_fragments()/glyph_cache_fragment_put() in libfreerdp/cache/glyph.c. When handling a GLYPH_FRAGMENT_ADD update, the code reads a one-byte server-controlled declared fragment size but does not verify it fits within the remaining received buffer before allocating and copying that many bytes. A malicious RDP server can send a short fragment with an oversized declared size, causing the client to read beyond the allocated buffer, resulting in an out-of-bounds read and client crash.
Severity
SSVC
Exploitation: poc
Automatable: yes
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-08-03 14:56 UTC
CWE
- CWE-125 - Out-of-bounds Read
Assigner
References
3 references
| URL | Tags |
|---|---|
| https://github.com/FreeRDP/FreeRDP/security/advis… | vendor-advisory |
| https://github.com/FreeRDP/FreeRDP/commit/f3b4347… | patch |
| https://www.vulncheck.com/advisories/freerdp-befo… | third-party-advisory |
Impacted products
Date Public
2026-07-15 00:00
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CVE-2026-67290 (GCVE-0-2026-67290)
Vulnerability from cvelistv5 – Published: 2026-08-01 12:22 – Updated: 2026-08-03 15:38
VLAI
EPSS
VEX
Title
FreeRDP before 3.29.0 Heap Out-of-Bounds Read via TSMF
Summary
FreeRDP before 3.29.0 contains a heap out-of-bounds read vulnerability in the TSMF FFmpeg decoder when parsing AVC1 MPEG2VIDEOINFO media types with insufficient ExtraData. Attackers can send malformed media format data from a server to trigger a crash by reading fixed offsets without validating source buffer length.
Severity
SSVC
Exploitation: none
Automatable: yes
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-08-03 15:00 UTC
CWE
- CWE-125 - Out-of-bounds Read
Assigner
References
3 references
| URL | Tags |
|---|---|
| https://github.com/FreeRDP/FreeRDP/security/advis… | vendor-advisory |
| https://github.com/FreeRDP/FreeRDP/commit/8d3b860… | patch |
| https://www.vulncheck.com/advisories/freerdp-befo… | third-party-advisory |
Impacted products
Date Public
2026-07-15 00:00
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CVE-2026-66809 (GCVE-0-2026-66809)
Vulnerability from cvelistv5 – Published: 2026-08-11 17:07 – Updated: 2026-09-11 16:49
VLAI
EPSS
VEX
Title
Microsoft Office Graphics Component Information Disclosure Vulnerability
Summary
Out-of-bounds read in Microsoft Office allows an unauthorized attacker to disclose information locally.
Severity
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-08-13 13:43 UTC
CWE
- CWE-125 - Out-of-bounds Read
Assigner
References
1 reference
| URL | Tags |
|---|---|
| https://msrc.microsoft.com/update-guide/vulnerabi… | vendor-advisorypatch |
Impacted products
8 products
| Vendor | Product | Version | |
|---|---|---|---|
| Microsoft | Microsoft 365 Apps for Enterprise |
Affected:
16.0.1 , < https://aka.ms/OfficeSecurityReleases
(custom)
|
|
| Microsoft | Microsoft Office 2019 |
Affected:
19.0.0 , < https://aka.ms/OfficeSecurityReleases
(custom)
|
|
| Microsoft | Microsoft Office 365 for Mac |
Affected:
1.0.0 , < 16.112.26081010
(custom)
|
|
| Microsoft | Microsoft Office LTSC 2021 |
Affected:
16.0.1 , < https://aka.ms/OfficeSecurityReleases
(custom)
|
|
| Microsoft | Microsoft Office LTSC 2024 |
Affected:
16.0.0 , < https://aka.ms/OfficeSecurityReleases
(custom)
|
|
| Microsoft | Microsoft Office LTSC for Mac 2021 |
Affected:
16.0.1 , < 16.112.26081010
(custom)
|
|
| Microsoft | Microsoft Office LTSC for Mac 2024 |
Affected:
16.0.0 , < 16.112.26081010
(custom)
|
|
| Microsoft | Microsoft Word 2016 |
Affected:
16.0.1 , < 16.0.5565.1000
(custom)
|
Date Public
2026-08-11 14:00
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CVE-2026-66806 (GCVE-0-2026-66806)
Vulnerability from cvelistv5 – Published: 2026-08-11 17:07 – Updated: 2026-09-11 16:49
VLAI
EPSS
VEX
Title
Microsoft Office Word Information Disclosure Vulnerability
Summary
Off-by-one error in Microsoft Office Word allows an unauthorized attacker to disclose information locally.
Severity
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-08-11 21:00 UTC
Assigner
References
1 reference
| URL | Tags |
|---|---|
| https://msrc.microsoft.com/update-guide/vulnerabi… | vendor-advisorypatch |
Impacted products
5 products
| Vendor | Product | Version | |
|---|---|---|---|
| Microsoft | Microsoft 365 Apps for Enterprise |
Affected:
16.0.1 , < https://aka.ms/OfficeSecurityReleases
(custom)
|
|
| Microsoft | Microsoft Office 2019 |
Affected:
19.0.0 , < https://aka.ms/OfficeSecurityReleases
(custom)
|
|
| Microsoft | Microsoft Office LTSC 2021 |
Affected:
16.0.1 , < https://aka.ms/OfficeSecurityReleases
(custom)
|
|
| Microsoft | Microsoft Office LTSC 2024 |
Affected:
16.0.0 , < https://aka.ms/OfficeSecurityReleases
(custom)
|
|
| Microsoft | Microsoft Word 2016 |
Affected:
16.0.1 , < 16.0.5565.1000
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|
Date Public
2026-08-11 14:00
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CVE-2026-66759 (GCVE-0-2026-66759)
Vulnerability from cvelistv5 – Published: 2026-07-27 19:12 – Updated: 2026-08-24 17:17
VLAI
EPSS
VEX
Title
Gimp: out-of-bounds read in file-icns plugin causes information disclosure or crash on crafted icns images
Summary
A flaw was found in the file-icns plugin in GIMP. When applying a decompressed mask during ICNS image processing, the plugin reads from the mask data buffer without verifying if the cursor exceeds the allocated resource size. If a crafted file contains a truncated mask resource, the icns_decompress function continues reading past the bounds of the buffer. This out-of-bounds read vulnerability results in information disclosure of heap contents, where memory contents are leaked as alpha channel pixel values, or a crash leading to a denial of service if unmapped memory is accessed.
Severity
7.1 (High)
SSVC
Exploitation: poc
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-07-27 19:25 UTC
CWE
- CWE-125 - Out-of-bounds Read
Assigner
References
4 references
| URL | Tags |
|---|---|
| https://access.redhat.com/errata/RHSA-2026:50817 | vendor-advisoryx_refsource_REDHAT |
| https://access.redhat.com/security/cve/CVE-2026-66759 | vdb-entryx_refsource_REDHAT |
| https://bugzilla.redhat.com/show_bug.cgi?id=2507557 | issue-trackingx_refsource_REDHAT |
| https://gitlab.gnome.org/GNOME/gimp/-/issues/16528 |
Impacted products
5 products
| Vendor | Product | Version | |
|---|---|---|---|
| GNOME | GIMP |
Affected:
2.99.14 , < *
(semver)
|
|
| Red Hat | Red Hat Enterprise Linux 9 |
Unaffected:
2:3.0.4-4.el9_8.9 , < *
(rpm)
cpe:/a:redhat:enterprise_linux:9::appstream |
|
| Red Hat | Red Hat Enterprise Linux 6 |
cpe:/o:redhat:enterprise_linux:6
|
|
| Red Hat | Red Hat Enterprise Linux 7 |
cpe:/o:redhat:enterprise_linux:7
|
|
| Red Hat | Red Hat Enterprise Linux 8 |
cpe:/o:redhat:enterprise_linux:8
|
Date Public
2026-07-07 00:00
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CVE-2026-66731 (GCVE-0-2026-66731)
Vulnerability from cvelistv5 – Published: 2026-07-27 16:57 – Updated: 2026-07-31 18:20 X_Open Source
VLAI
EPSS
VEX
Title
facil.io 0.7.5 - 0.7.6 HTTP/1.1 Chunked Transfer Encoding Parser Crash DoS
Summary
facil.io 0.7.5 through 0.7.6 contains a denial-of-service vulnerability in the HTTP/1.1 chunked transfer encoding parser that allows unauthenticated remote attackers to crash the server by sending a negative chunk size value. Attackers can send a single POST request with a Transfer-Encoding: chunked header containing a leading minus sign in the chunk size field, causing the parser in http1_parser.h to compute a large positive integer from the negated value, corrupting internal state and moving the read pointer into unmapped memory resulting in a fault.
Severity
SSVC
Exploitation: poc
Automatable: yes
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-07-27 17:30 UTC
CWE
- CWE-125 - Out-of-bounds Read
Assigner
References
3 references
| URL | Tags |
|---|---|
| https://tpaidakis.com/writeups/facilio-parser-dos/ | technical-descriptionexploit |
| https://github.com/theopaid/Negative-Chunk-Size-P… | technical-descriptionexploit |
| https://www.vulncheck.com/advisories/facil-io-htt… | third-party-advisory |
Impacted products
Date Public
2026-07-24 00:00
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CVE-2026-66729 (GCVE-0-2026-66729)
Vulnerability from cvelistv5 – Published: 2026-07-27 16:52 – Updated: 2026-07-31 18:19 X_Open Source
VLAI
EPSS
VEX
Title
facil.io 0.6.0 - 0.7.6 Integer Underflow DoS via Multipart MIME Body Parser
Summary
facil.io 0.6.0 through 0.7.6 contains an integer underflow vulnerability in the multipart MIME body parser that allows unauthenticated remote attackers to crash the server process by sending a crafted Content-Disposition header with an empty field name. Attackers can trigger a uint32_t wraparound in http_mime_parser.h causing an out-of-bounds memory read past the name pointer, resulting in a bus fault that crashes the handling worker with a single POST request.
Severity
SSVC
Exploitation: poc
Automatable: yes
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-07-27 17:54 UTC
CWE
- CWE-125 - Out-of-bounds Read
Assigner
References
3 references
| URL | Tags |
|---|---|
| https://tpaidakis.com/writeups/facilio-parser-dos/ | technical-descriptionexploit |
| https://github.com/theopaid/Out-of-Bounds-Read-in… | technical-descriptionexploit |
| https://www.vulncheck.com/advisories/facil-io-int… | third-party-advisory |
Impacted products
Date Public
2026-07-24 00:00
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CVE-2026-66720 (GCVE-0-2026-66720)
Vulnerability from cvelistv5 – Published: 2026-07-30 22:46 – Updated: 2026-07-31 15:58
VLAI
EPSS
VEX
Title
MZ Automation libiec61850 Out-of-bounds Read
Summary
The GOOSE subscriber component improperly validates the UTC timestamp
field in unauthenticated IEC 61850 GOOSE (EtherType 0x88B8) Layer-2
multicast messages. A specially crafted GOOSE frame containing an
undersized timestamp field can trigger a heap out-of-bounds read during
message processing, causing the process to crash and resulting in a
denial-of-service condition.
Severity
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-07-31 15:58 UTC
CWE
Assigner
References
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| MZ Automation GmbH | libiec61850 |
Affected:
0 , < 1.6.2
(custom)
Unaffected: 1.6.2 |
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CVE-2026-66401 (GCVE-0-2026-66401)
Vulnerability from cvelistv5 – Published: 2026-08-01 12:22 – Updated: 2026-08-03 17:42
VLAI
EPSS
VEX
Title
FreeRDP before 3.29.0 Out-of-Bounds Read via UVC H.264
Summary
FreeRDP before 3.29.0 contains an out-of-bounds heap read vulnerability in the UVC H.264 extension-unit parser that fails to validate descriptor length before accessing the GUID field. A local attacker with a malicious USB video camera can trigger a heap read beyond allocated bounds during camera stream setup, causing denial of service.
Severity
SSVC
Exploitation: poc
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-08-03 17:41 UTC
CWE
- CWE-125 - Out-of-bounds Read
Assigner
References
3 references
| URL | Tags |
|---|---|
| https://github.com/FreeRDP/FreeRDP/security/advis… | vendor-advisory |
| https://github.com/FreeRDP/FreeRDP/commit/5044d53… | patch |
| https://www.vulncheck.com/advisories/freerdp-befo… | third-party-advisory |
Impacted products
Date Public
2026-07-15 00:00
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],
"metrics": [
{
"cvssV4_0": {
"attackComplexity": "LOW",
"attackRequirements": "NONE",
"attackVector": "PHYSICAL",
"baseScore": 2.4,
"baseSeverity": "LOW",
"privilegesRequired": "NONE",
"subAvailabilityImpact": "NONE",
"subConfidentialityImpact": "NONE",
"subIntegrityImpact": "NONE",
"userInteraction": "PASSIVE",
"vectorString": "CVSS:4.0/AV:P/AC:L/AT:N/PR:N/UI:P/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N",
"version": "4.0",
"vulnAvailabilityImpact": "LOW",
"vulnConfidentialityImpact": "NONE",
"vulnIntegrityImpact": "NONE"
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{
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"baseScore": 2.1,
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"confidentialityImpact": "NONE",
"integrityImpact": "NONE",
"privilegesRequired": "NONE",
"scope": "UNCHANGED",
"userInteraction": "REQUIRED",
"vectorString": "CVSS:3.1/AV:P/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:L",
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"problemTypes": [
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"descriptions": [
{
"cweId": "CWE-125",
"description": "Out-of-bounds Read",
"lang": "en",
"type": "CWE"
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"providerMetadata": {
"dateUpdated": "2026-08-01T12:22:18.101Z",
"orgId": "83251b91-4cc7-4094-a5c7-464a1b83ea10",
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"references": [
{
"name": "GitHub Security Advisory (GHSA-8jj2-67pg-j6mg)",
"tags": [
"vendor-advisory"
],
"url": "https://github.com/FreeRDP/FreeRDP/security/advisories/GHSA-8jj2-67pg-j6mg"
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{
"name": "Patch Commit",
"tags": [
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"url": "https://github.com/FreeRDP/FreeRDP/commit/5044d5390035c6fd9a36ad885192d97d21e8a92d"
},
{
"name": "VulnCheck Advisory: FreeRDP before 3.29.0 Out-of-Bounds Read via UVC H.264",
"tags": [
"third-party-advisory"
],
"url": "https://www.vulncheck.com/advisories/freerdp-before-out-of-bounds-read-via-uvc-h-264"
}
],
"title": "FreeRDP before 3.29.0 Out-of-Bounds Read via UVC H.264",
"x_generator": {
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}
},
"cveMetadata": {
"assignerOrgId": "83251b91-4cc7-4094-a5c7-464a1b83ea10",
"assignerShortName": "VulnCheck",
"cveId": "CVE-2026-66401",
"datePublished": "2026-08-01T12:22:18.101Z",
"dateReserved": "2026-07-26T12:22:34.139Z",
"dateUpdated": "2026-08-03T17:42:01.381Z",
"state": "PUBLISHED"
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Mitigation MIT-5
Implementation
Strategy: Input Validation
- Assume all input is malicious. Use an "accept known good" input validation strategy, i.e., use a list of acceptable inputs that strictly conform to specifications. Reject any input that does not strictly conform to specifications, or transform it into something that does.
- When performing input validation, consider all potentially relevant properties, including length, type of input, the full range of acceptable values, missing or extra inputs, syntax, consistency across related fields, and conformance to business rules. As an example of business rule logic, "boat" may be syntactically valid because it only contains alphanumeric characters, but it is not valid if the input is only expected to contain colors such as "red" or "blue."
- Do not rely exclusively on looking for malicious or malformed inputs. This is likely to miss at least one undesirable input, especially if the code's environment changes. This can give attackers enough room to bypass the intended validation. However, denylists can be useful for detecting potential attacks or determining which inputs are so malformed that they should be rejected outright.
- To reduce the likelihood of introducing an out-of-bounds read, ensure that you validate and ensure correct calculations for any length argument, buffer size calculation, or offset. Be especially careful of relying on a sentinel (i.e. special character such as NUL) in untrusted inputs.
Mitigation
Architecture and Design
Strategy: Language Selection
Use a language that provides appropriate memory abstractions.
CAPEC-540: Overread Buffers
An adversary attacks a target by providing input that causes an application to read beyond the boundary of a defined buffer. This typically occurs when a value influencing where to start or stop reading is set to reflect positions outside of the valid memory location of the buffer. This type of attack may result in exposure of sensitive information, a system crash, or arbitrary code execution.