CVE-2023-50991
Memory Safety in Tenda I29 Firmware 1.0.0.2 … 1.0.0.5
Raw vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:HCVSS and EPSS are reproduced from their sources (NVD, FIRST EPSS). Risk Priority is our own derived reading, not an NVD score.
Summary
CVE-2023-50991 is a high-severity Classic Buffer Overflow (CWE-120) vulnerability in Tenda I29 Firmware. Its CVSS base score is 7.5 (High).
Operationally, exploitation aligns with the MITRE ATT&CK technique NTDS (T1003.003); ranked in the top 5% of CVEs by exploit likelihood; it is not currently listed in the CISA KEV catalog; a public proof-of-concept is referenced.
The strongest mitigations our analysis identified map to SA-11 (Developer Testing and Evaluation) and SI-10 (Information Input Validation) — see the control section below for these in your framework.
Deeper analysis AI-assisted summary
Synthesised by an AI model from the NVD description and linked references — a reading aid, not an authoritative source.
A buffer overflow vulnerability exists in the pingSet function of Tenda i29 wireless access point firmware versions 1.0 V1.0.0.5 and 1.0 V1.0.0.2. The flaw is triggered when the pingIp parameter is processed, allowing an attacker to supply crafted input that exceeds expected buffer bounds and results in a denial of service. The issue is tracked as CWE-120 and carries a CVSS 3.1 score of 7.5 reflecting network attack vector, low complexity, and high availability impact with no confidentiality or integrity consequences.
Remote unauthenticated attackers can exploit the vulnerability by sending a malicious HTTP request containing an oversized pingIp value directly to the device's web management interface. Successful exploitation causes the affected process to crash, producing a denial-of-service condition that disrupts device operation until a manual or automatic restart occurs.
Public technical details and proof-of-concept material are available in a GitHub repository that documents the pingSet parameter handling flaw, although no vendor advisory or firmware patch has been referenced in the supplied sources. The associated EPSS score has remained flat at 0.1294 with no material increase since disclosure.
EU & UK References
- 🇪🇺 ENISA EUVD: EUVD-2023-55718
Vulnerability Data
Buffer Overflow vulnerability in Tenda i29 versions 1.0 V1.0.0.5 and 1.0 V1.0.0.2, allows remote attackers to cause a denial of service (DoS) via the pingIp parameter in the pingSet function.
- CWE(s)
Related Threats
MITRE ATT&CK Enterprise Techniques
CVEs Like This One
Affected Assets
Mitigating Controls
Control response
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V5.2.1
Mitigating Controls (NIST 800-53 r5) AI
Developer testing and analysis can find missing size checks before deployment.
Input validation directly enforces size checks before buffer copies.
Engineering principles require bounds checking and safe buffer handling in design.
Memory protection limits the impact of an overflow once it occurs.
Mitigating Controls (NIST CSF 2.0) AI
Derived directly from the weakness types (CWEs) cited in the NVD entry via our AI-authored CWE→CSF cross-walk (authority under review) — links open the control.
Vulnerability identification processes such as code review or scanning detect classic buffer overflows before exploitation.
Routine patching replaces vulnerable code containing unchecked buffer copies with corrected versions.
Secure development practices directly enforce bounds checking and input validation that prevent classic buffer overflows.
Mitigating Controls (ISO/IEC 27001:2022 Annex A) AI
Derived directly from the weakness types (CWEs) cited in the NVD entry via our AI-authored CWE→ISO cross-walk (authority under review) — links open the control.