CVE-2025-5629
Published: 05 June 2025
Summary
CVE-2025-5629 is a high-severity Improper Restriction of Operations within the Bounds of a Memory Buffer (CWE-119) vulnerability in Tenda Ac10 Firmware. Its CVSS base score is 8.7 (High).
Operationally, ranked in the top 19.6% of CVEs by exploit likelihood; it is not currently listed in the CISA KEV catalog.
Deeper analysis
A critical buffer overflow vulnerability tracked as CVE-2025-5629 affects Tenda AC10 routers running firmware up to 15.03.06.47. It resides in the formSetPPTPServer function of the /goform/SetPptpServerCfg endpoint inside the HTTP Handler component, where unsanitized startIp and endIp parameters allow an attacker to overwrite memory.
An authenticated remote attacker can send a crafted HTTP request to trigger the overflow, leading to arbitrary code execution or a crash that compromises confidentiality, integrity, and availability of the device. The attack requires no user interaction and can be launched over the network with low complexity.
Public exploit code has already been published, yet the EPSS score remains flat at 0.0133 with no material rise after disclosure. References include a GitHub proof-of-concept, multiple VulDB entries, and the vendor site, though no specific mitigation steps or firmware patches are described in the available sources.
EU & UK References
- 🇪🇺 ENISA EUVD: EUVD-2025-16953
Vulnerability details
A vulnerability, which was classified as critical, was found in Tenda AC10 up to 15.03.06.47. This affects the function formSetPPTPServer of the file /goform/SetPptpServerCfg of the component HTTP Handler. The manipulation of the argument startIp/endIp leads to buffer overflow. It…
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is possible to initiate the attack 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.
Managed runtimes used by platform-independent applications (e.g., JVM, CLR) enforce memory safety, preventing most buffer overflows that require direct memory manipulation.
Ongoing control assessments and code testing (static/dynamic analysis, fuzzing) surface memory buffer restriction failures, which are then remediated before release.
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.