CVE-2025-5799
Published: 06 June 2025
Summary
CVE-2025-5799 is a high-severity Improper Restriction of Operations within the Bounds of a Memory Buffer (CWE-119) vulnerability in Tenda Ac8 Firmware. Its CVSS base score is 7.4 (High).
Operationally, ranked in the top 18.1% of CVEs by exploit likelihood; it is not currently listed in the CISA KEV catalog; a public proof-of-concept is referenced.
Deeper analysis
A stack-based buffer overflow vulnerability exists in Tenda AC8 firmware version 16.03.34.09 within the fromSetWirelessRepeat function of the /goform/WifiExtraSet endpoint. The flaw is triggered by unsanitized input to the wpapsk_crypto argument and is tracked under CWE-119 and CWE-121. It carries a CVSS 4.0 score of 7.4 and permits remote exploitation without user interaction.
An authenticated remote attacker can supply a crafted wireless-repeater configuration request that overflows the stack, resulting in arbitrary code execution or denial of service with full impact to confidentiality, integrity, and availability on the affected device. The attack requires low privileges and can be launched over the network.
Public exploit details have been posted to a Notion page and mirrored on VulDB, confirming that proof-of-concept code is available. The associated EPSS score has remained flat at 0.0157 with no material increase since disclosure, and no vendor advisory describing patches or workarounds is referenced in the available sources.
EU & UK References
- 🇪🇺 ENISA EUVD: EUVD-2025-17364
Vulnerability details
A vulnerability was found in Tenda AC8 16.03.34.09. It has been declared as critical. Affected by this vulnerability is the function fromSetWirelessRepeat of the file /goform/WifiExtraSet. The manipulation of the argument wpapsk_crypto leads to stack-based buffer overflow. The attack can…
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be launched remotely. The exploit has been disclosed to the public and may be used.
- CWE(s)
Related Threats
No named actor attribution yet. ATT&CK technique mapping in progress for this CVE.
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.
Ongoing control assessments and code testing (static/dynamic analysis, fuzzing) surface memory buffer restriction failures, which are then remediated before release.
Managed runtimes used by platform-independent applications (e.g., JVM, CLR) enforce memory safety, preventing most buffer overflows that require direct memory manipulation.
Memory protections (e.g., W^X, ASLR) make exploitation of buffer-boundary violations far harder to turn into code execution.
Detects exploitation attempts that produce memory corruption, crashes, or anomalous behavior.