CVE-2023-25234
Memory Safety in Tenda Ac500 Firmware 2.0.1.9\(1307\)
Raw vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/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-2023-25234 is a critical-severity Out-of-bounds Write (CWE-787) vulnerability in Tenda Ac500 Firmware. Its CVSS base score is 9.8 (Critical).
Operationally, exploitation aligns with the MITRE ATT&CK technique Security Account Manager (T1003.002); ranked in the top 3% of CVEs by exploit likelihood; it is not currently listed in the CISA KEV catalog; a public proof-of-concept is referenced.
Deeper analysis AI-assisted summary
Synthesised by an AI model from the NVD description and linked references — a reading aid, not an authoritative source.
Tenda AC500 firmware version V2.0.1.9(1307) contains a buffer overflow vulnerability in the fromAddressNat function, triggered through the entrys and mitInterface parameters. The flaw is tracked as CVE-2023-25234 and is classified under CWE-787 as an out-of-bounds write, carrying a CVSS 3.1 score of 9.8 that reflects network attack vector, low complexity, and no required authentication or user interaction.
An unauthenticated remote attacker can send crafted requests to the affected device to trigger the overflow, potentially resulting in arbitrary code execution, memory corruption, or denial of service that fully compromises the router's confidentiality, integrity, and availability.
The two provided references point to the same GitHub repository containing vulnerability details but do not include vendor advisories, patch information, or mitigation guidance.
EPSS for the CVE rose from lower values to a peak of 0.7202 on 2026-01-13 before receding to the current score of 0.3413, indicating that exploitation interest increased after public disclosure.
EU & UK References
- 🇪🇺 ENISA EUVD: EUVD-2023-29197
Vulnerability Data
Tenda AC500 V2.0.1.9(1307) is vulnerable to Buffer Overflow in function fromAddressNat via parameters entrys and mitInterface.
- CWE(s)
Related Threats
MITRE ATT&CK Enterprise Techniques
CVEs Like This One
Affected Assets
Mitigating Controls
Likely Mitigating Controls AI
Per-CVE control mapping for this CVE has not run yet; the list below is derived from the weakness types (CWEs) cited in the NVD entry.
Out-of-bounds writes that corrupt control flow or inject shellcode are rendered non-executable by the same memory protections.
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 scanning and recording can discover out-of-bounds write flaws so they can be remediated.
Patching or replacing vulnerable software directly eliminates known instances of this coding weakness.
Secure-development practices (static analysis, bounds checking, code review) are the primary means of preventing out-of-bounds writes.
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.