CWE-121

Stack-based Buffer Overflow

A stack-based buffer overflow condition is a condition where the buffer being overwritten is allocated on the stack (i.e., is a local variable or, rarely, a parameter to a function).

CVE-2026-39461 (GCVE-0-2026-39461)

Vulnerability from cvelistv5 – Published: 2026-05-21 09:20 – Updated: 2026-05-22 03:55
VLAI
Title
select(2) file descriptor set overflow causes stack overflow
Summary
libcasper(3) communicates with helper processes via UNIX domain sockets, and uses the select(2) system call to wait for data to become available. However, it does not verify that its socket descriptor fits within select(2)'s descriptor set size limit of FD_SETSIZE (1024). An attacker able to cause an application using libcasper(3) to allocate large file descriptors, e.g., by opening many descriptors and executing a program which is not careful to close them upon startup, may trigger stack corruption. If the target application runs with setuid root privileges, this could be used to escalate local privileges.
Severity
8.8 (High)
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H
SSVC
Exploitation: none Automatable: no Technical Impact: total
CISA Coordinator (v2.0.3)
CWE
  • CWE-121 - Stack-based Buffer Overflow
Assigner
References
Impacted products
Vendor Product Version
FreeBSD FreeBSD Affected: 15.0-RELEASE , < p9 (release)
Affected: 14.4-RELEASE , < p5 (release)
Affected: 14.3-RELEASE , < p14 (release)
Create a notification for this product.
Date Public
2026-05-20 23:00
Credits
Joshua Rogers of AISLE Research Team
Show details on NVD website
To clipboard 

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CVE-2026-3970 (GCVE-0-2026-3970)

Vulnerability from cvelistv5 – Published: 2026-03-12 01:02 – Updated: 2026-03-12 16:21
VLAI
Title
Tenda i3 wifiSSIDget formwrlSSIDget stack-based overflow
Summary
A flaw has been found in Tenda i3 1.0.0.6(2204). Affected is the function formwrlSSIDget of the file /goform/wifiSSIDget. Executing a manipulation of the argument index can lead to stack-based buffer overflow. The attack may be launched remotely. The exploit has been published and may be used.
Severity
8.7 (High)
CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:P
8.8 (High)
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H/E:P/RL:X/RC:R
8.8 (High)
CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H/E:P/RL:X/RC:R
SSVC
Exploitation: poc Automatable: no Technical Impact: total
CISA Coordinator (v2.0.3)
CWE
Assigner
References
URL Tags
https://vuldb.com/?id.350405 vdb-entrytechnical-description
https://vuldb.com/?ctiid.350405 signaturepermissions-required
https://vuldb.com/?submit.768995 third-party-advisory
https://github.com/Svigo-o/Tenda_vul/tree/main/te… exploit
https://www.tenda.com.cn/ product
Impacted products
Vendor Product Version
Tenda i3 Affected: 1.0.0.6(2204)
    cpe:2.3:o:tenda:i3_firmware:*:*:*:*:*:*:*:*
 Create a notification for this product.
Credits
Svigo (VulDB User)
Show details on NVD website
To clipboard 

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CVE-2026-3971 (GCVE-0-2026-3971)

Vulnerability from cvelistv5 – Published: 2026-03-12 01:02 – Updated: 2026-03-12 16:22
VLAI
Title
Tenda i3 wifiSSIDset formwrlSSIDset stack-based overflow
Summary
A vulnerability has been found in Tenda i3 1.0.0.6(2204). Affected by this vulnerability is the function formwrlSSIDset of the file /goform/wifiSSIDset. The manipulation of the argument index/GO leads to stack-based buffer overflow. Remote exploitation of the attack is possible. The exploit has been disclosed to the public and may be used.
Severity
8.7 (High)
CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:P
8.8 (High)
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H/E:P/RL:X/RC:R
8.8 (High)
CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H/E:P/RL:X/RC:R
SSVC
Exploitation: poc Automatable: no Technical Impact: total
CISA Coordinator (v2.0.3)
CWE
Assigner
References
Impacted products
Vendor Product Version
Tenda i3 Affected: 1.0.0.6(2204)
    cpe:2.3:o:tenda:i3_firmware:*:*:*:*:*:*:*:*
 Create a notification for this product.
Credits
Svigo (VulDB User)
Show details on NVD website
To clipboard 

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CVE-2026-3972 (GCVE-0-2026-3972)

Vulnerability from cvelistv5 – Published: 2026-03-12 01:32 – Updated: 2026-03-12 16:23
VLAI
Title
Tenda W3 HTTP setcfm formSetCfm stack-based overflow
Summary
A vulnerability was found in Tenda W3 1.0.0.3(2204). Affected by this issue is the function formSetCfm of the file /goform/setcfm of the component HTTP Handler. The manipulation of the argument funcpara1 results in stack-based buffer overflow. The attack can only be performed from the local network. The exploit has been made public and could be used.
Severity
8.7 (High)
CVSS:4.0/AV:A/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:P
8.8 (High)
CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H/E:P/RL:X/RC:R
8.8 (High)
CVSS:3.0/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H/E:P/RL:X/RC:R
SSVC
Exploitation: poc Automatable: no Technical Impact: total
CISA Coordinator (v2.0.3)
CWE
Assigner
References
URL Tags
https://vuldb.com/?id.350407 vdb-entrytechnical-description
https://vuldb.com/?ctiid.350407 signaturepermissions-required
https://vuldb.com/?submit.769172 third-party-advisory
https://github.com/Svigo-o/Tenda_vul/tree/main/te… exploit
https://www.tenda.com.cn/ product
Impacted products
Vendor Product Version
Tenda W3 Affected: 1.0.0.3(2204)
Create a notification for this product.
Credits
Svigo_o (VulDB User)
Show details on NVD website
To clipboard 

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CVE-2026-3973 (GCVE-0-2026-3973)

Vulnerability from cvelistv5 – Published: 2026-03-12 01:32 – Updated: 2026-03-12 16:22
VLAI
Title
Tenda W3 POST Parameter setAutoPing formSetAutoPing stack-based overflow
Summary
A vulnerability was determined in Tenda W3 1.0.0.3(2204). This affects the function formSetAutoPing of the file /goform/setAutoPing of the component POST Parameter Handler. This manipulation of the argument ping1/ping2 causes stack-based buffer overflow. The attack is possible to be carried out remotely. The exploit has been publicly disclosed and may be utilized.
Severity
8.7 (High)
CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:P
8.8 (High)
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H/E:P/RL:X/RC:R
8.8 (High)
CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H/E:P/RL:X/RC:R
SSVC
Exploitation: poc Automatable: no Technical Impact: total
CISA Coordinator (v2.0.3)
CWE
Assigner
References
Impacted products
Vendor Product Version
Tenda W3 Affected: 1.0.0.3(2204)
Create a notification for this product.
Credits
Svigo_o (VulDB User)
Show details on NVD website
To clipboard 

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CVE-2026-3974 (GCVE-0-2026-3974)

Vulnerability from cvelistv5 – Published: 2026-03-12 02:02 – Updated: 2026-03-12 13:15
VLAI
Title
Tenda W3 HTTP exeCommand formexeCommand stack-based overflow
Summary
A vulnerability was identified in Tenda W3 1.0.0.3(2204). This vulnerability affects the function formexeCommand of the file /goform/exeCommand of the component HTTP Handler. Such manipulation of the argument cmdinput leads to stack-based buffer overflow. The attack may be performed from remote. The exploit is publicly available and might be used.
Severity
8.7 (High)
CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:P
8.8 (High)
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H/E:P/RL:X/RC:R
8.8 (High)
CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H/E:P/RL:X/RC:R
SSVC
Exploitation: poc Automatable: no Technical Impact: total
CISA Coordinator (v2.0.3)
CWE
Assigner
References
URL Tags
https://vuldb.com/?id.350409 vdb-entrytechnical-description
https://vuldb.com/?ctiid.350409 signaturepermissions-required
https://vuldb.com/?submit.769177 third-party-advisory
https://github.com/Svigo-o/Tenda_vul/tree/main/te… exploit
https://www.tenda.com.cn/ product
Impacted products
Vendor Product Version
Tenda W3 Affected: 1.0.0.3(2204)
Create a notification for this product.
Credits
Svigo_o (VulDB User)
Show details on NVD website
To clipboard 

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CVE-2026-3975 (GCVE-0-2026-3975)

Vulnerability from cvelistv5 – Published: 2026-03-12 02:32 – Updated: 2026-03-12 14:44
VLAI
Title
Tenda W3 POST Parameter WifiMacFilterGet formWifiMacFilterGet stack-based overflow
Summary
A security flaw has been discovered in Tenda W3 1.0.0.3(2204). This issue affects the function formWifiMacFilterGet of the file /goform/WifiMacFilterGet of the component POST Parameter Handler. Performing a manipulation of the argument wl_radio results in stack-based buffer overflow. It is possible to initiate the attack remotely. The exploit has been released to the public and may be used for attacks.
Severity
8.7 (High)
CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:P
8.8 (High)
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H/E:P/RL:X/RC:R
8.8 (High)
CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H/E:P/RL:X/RC:R
SSVC
Exploitation: poc Automatable: no Technical Impact: total
CISA Coordinator (v2.0.3)
CWE
Assigner
References
URL Tags
https://vuldb.com/?id.350410 vdb-entrytechnical-description
https://vuldb.com/?ctiid.350410 signaturepermissions-required
https://vuldb.com/?submit.769178 third-party-advisory
https://github.com/Svigo-o/Tenda_vul/tree/main/te… exploit
https://www.tenda.com.cn/ product
Impacted products
Vendor Product Version
Tenda W3 Affected: 1.0.0.3(2204)
Create a notification for this product.
Credits
Svigo_o (VulDB User)
Show details on NVD website
To clipboard 

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CVE-2026-3976 (GCVE-0-2026-3976)

Vulnerability from cvelistv5 – Published: 2026-03-12 02:32 – Updated: 2026-03-12 14:42
VLAI
Title
Tenda W3 POST Parameter WifiMacFilterSet formWifiMacFilterSet stack-based overflow
Summary
A weakness has been identified in Tenda W3 1.0.0.3(2204). Impacted is the function formWifiMacFilterSet of the file /goform/WifiMacFilterSet of the component POST Parameter Handler. Executing a manipulation of the argument index/GO can lead to stack-based buffer overflow. It is possible to launch the attack remotely. The exploit has been made available to the public and could be used for attacks.
Severity
8.7 (High)
CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:P
8.8 (High)
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H/E:P/RL:X/RC:R
8.8 (High)
CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H/E:P/RL:X/RC:R
SSVC
Exploitation: poc Automatable: no Technical Impact: total
CISA Coordinator (v2.0.3)
CWE
Assigner
References
Impacted products
Vendor Product Version
Tenda W3 Affected: 1.0.0.3(2204)
Create a notification for this product.
Credits
Svigo_o (VulDB User)
Show details on NVD website
To clipboard 

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CVE-2026-3978 (GCVE-0-2026-3978)

Vulnerability from cvelistv5 – Published: 2026-03-12 03:32 – Updated: 2026-03-12 16:17
VLAI
Title
D-Link DIR-513 formEasySetupWizard3 stack-based overflow
Summary
A vulnerability was detected in D-Link DIR-513 1.10. The impacted element is an unknown function of the file /goform/formEasySetupWizard3. The manipulation of the argument wan_connected results in stack-based buffer overflow. The attack can be launched remotely. The exploit is now public and may be used.
Severity
8.7 (High)
CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:P
8.8 (High)
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H/E:P/RL:X/RC:R
8.8 (High)
CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H/E:P/RL:X/RC:R
SSVC
Exploitation: poc Automatable: no Technical Impact: total
CISA Coordinator (v2.0.3)
CWE
Assigner
References
URL Tags
https://vuldb.com/?id.350413 vdb-entrytechnical-description
https://vuldb.com/?ctiid.350413 signaturepermissions-required
https://vuldb.com/?submit.769586 third-party-advisory
https://github.com/Litengzheng/vul_db/blob/main/D… exploit
https://www.dlink.com/ product
Impacted products
Vendor Product Version
D-Link DIR-513 Affected: 1.10
Create a notification for this product.
Credits
LtzHust2 (VulDB User)
Show details on NVD website
To clipboard 

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CVE-2026-39853 (GCVE-0-2026-39853)

Vulnerability from cvelistv5 – Published: 2026-04-09 15:50 – Updated: 2026-04-09 16:15
VLAI
Title
osslsigncode has a Stack Buffer Overflow via Unbounded Digest Copy During Signature Verification
Summary
osslsigncode is a tool that implements Authenticode signing and timestamping. Prior to 2.12, A stack buffer overflow vulnerability exists in osslsigncode in several signature verification paths. During verification of a PKCS#7 signature, the code copies the digest value from a parsed SpcIndirectDataContent structure into a fixed-size stack buffer (mdbuf[EVP_MAX_MD_SIZE], 64 bytes) without validating that the source length fits within the destination buffer. This pattern is present in the verification handlers for PE, MSI, CAB, and script files. An attacker can craft a malicious signed file with an oversized digest field in SpcIndirectDataContent. When a user verifies such a file with osslsigncode verify, the unbounded memcpy can overflow the stack buffer and corrupt adjacent stack state. This vulnerability is fixed in 2.12.
Severity
7.8 (High)
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
SSVC
Exploitation: none Automatable: no Technical Impact: total
CISA Coordinator (v2.0.3)
CWE
Assigner
References
Impacted products
Vendor Product Version
mtrojnar osslsigncode Affected: < 2.12
Create a notification for this product.
Show details on NVD website
To clipboard 

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          "value": "osslsigncode is a tool that implements Authenticode signing and timestamping. Prior to 2.12, A stack buffer overflow vulnerability exists in osslsigncode in several signature verification paths. During verification of a PKCS#7 signature, the code copies the digest value from a parsed SpcIndirectDataContent structure into a fixed-size stack buffer  (mdbuf[EVP_MAX_MD_SIZE], 64 bytes) without validating that the source length fits within the destination buffer. This pattern is present in the verification handlers for PE, MSI, CAB, and script files. An attacker can craft a malicious signed file with an oversized digest field in SpcIndirectDataContent. When a user verifies such a file with osslsigncode verify, the unbounded memcpy can overflow the stack buffer and corrupt adjacent stack state. This vulnerability is fixed in 2.12."
        }
      ],
      "metrics": [
        {
          "cvssV3_1": {
            "attackComplexity": "LOW",
            "attackVector": "LOCAL",
            "availabilityImpact": "HIGH",
            "baseScore": 7.8,
            "baseSeverity": "HIGH",
            "confidentialityImpact": "HIGH",
            "integrityImpact": "HIGH",
            "privilegesRequired": "NONE",
            "scope": "UNCHANGED",
            "userInteraction": "REQUIRED",
            "vectorString": "CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H",
            "version": "3.1"
          }
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "cweId": "CWE-121",
              "description": "CWE-121: Stack-based Buffer Overflow",
              "lang": "en",
              "type": "CWE"
            }
          ]
        },
        {
          "descriptions": [
            {
              "cweId": "CWE-787",
              "description": "CWE-787: Out-of-bounds Write",
              "lang": "en",
              "type": "CWE"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-04-09T15:50:26.548Z",
        "orgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
        "shortName": "GitHub_M"
      },
      "references": [
        {
          "name": "https://github.com/mtrojnar/osslsigncode/security/advisories/GHSA-hx87-8754-xvh4",
          "tags": [
            "x_refsource_CONFIRM"
          ],
          "url": "https://github.com/mtrojnar/osslsigncode/security/advisories/GHSA-hx87-8754-xvh4"
        },
        {
          "name": "https://github.com/mtrojnar/osslsigncode/commit/cbee1e723c5a8547302bd841ad9943ed8144db68",
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://github.com/mtrojnar/osslsigncode/commit/cbee1e723c5a8547302bd841ad9943ed8144db68"
        },
        {
          "name": "https://github.com/mtrojnar/osslsigncode/releases/tag/2.12",
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://github.com/mtrojnar/osslsigncode/releases/tag/2.12"
        }
      ],
      "source": {
        "advisory": "GHSA-hx87-8754-xvh4",
        "discovery": "UNKNOWN"
      },
      "title": "osslsigncode has a Stack Buffer Overflow via Unbounded Digest Copy During Signature Verification"
    }
  },
  "cveMetadata": {
    "assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
    "assignerShortName": "GitHub_M",
    "cveId": "CVE-2026-39853",
    "datePublished": "2026-04-09T15:50:26.548Z",
    "dateReserved": "2026-04-07T19:13:20.378Z",
    "dateUpdated": "2026-04-09T16:15:19.583Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2"
}
Mitigation ID: MIT-10

Phases: Operation, Build and Compilation

Strategy: Environment Hardening

Description:

  • 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

Phase: Architecture and Design

Description:

  • Use an abstraction library to abstract away risky APIs. Not a complete solution.
Mitigation

Phase: Implementation

Description:

  • Implement and perform bounds checking on input.
Mitigation

Phase: Implementation

Description:

  • Do not use dangerous functions such as gets. Use safer, equivalent functions which check for boundary errors.
Mitigation ID: MIT-11

Phases: Operation, Build and Compilation

Strategy: Environment Hardening

Description:

  • 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].

No CAPEC attack patterns related to this CWE.

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