CVE-2026-6135
Published: 13 April 2026
Summary
CVE-2026-6135 is a high-severity Improper Restriction of Operations within the Bounds of a Memory Buffer (CWE-119) vulnerability in Tenda F451 Firmware. Its CVSS base score is 7.4 (High).
Operationally, exploitation aligns with the MITRE ATT&CK technique Exploit Public-Facing Application (T1190); ranked at the 45.2th percentile by exploit likelihood (below the median); it is not currently listed in the CISA KEV catalog.
The strongest mitigations our analysis identified are NIST 800-53 SI-10 (Information Input Validation) and SI-16 (Memory Protection).
Deeper analysis
CVE-2026-6135 is a stack-based buffer overflow vulnerability (CWE-119, CWE-121) affecting Tenda F451 routers on firmware version 1.0.0.7_cn_svn7958. The flaw exists in the fromSetIpBind function within the /goform/SetIpBind file, where manipulation of the "page" argument triggers the overflow. Published on 2026-04-13, it carries a CVSS v3.1 base score of 8.8 (AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H), indicating high severity.
The vulnerability enables remote exploitation by attackers possessing low privileges. Successful attacks can achieve high impacts on confidentiality, integrity, and availability, likely enabling arbitrary code execution on the targeted device.
Advisories and further details, including potential mitigations or patches, are available via references such as https://github.com/Jimi-Lab/cve/issues/19, https://vuldb.com/submit/792877, https://vuldb.com/vuln/356999, https://vuldb.com/vuln/356999/cti, and the vendor site at https://www.tenda.com.cn/.
A public exploit is available, heightening the risk of real-world attacks on unpatched Tenda F451 devices.
EU & UK References
- 🇪🇺 ENISA EUVD: EUVD-2026-21754
Vulnerability details
A weakness has been identified in Tenda F451 1.0.0.7_cn_svn7958. This issue affects the function fromSetIpBind of the file /goform/SetIpBind. Executing a manipulation of the argument page can lead to stack-based buffer overflow. The attack may be performed from remote. The…
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exploit has been made available to the public and could be used for attacks.
- CWE(s)
Related Threats
MITRE ATT&CK Enterprise TechniquesAI
Why these techniques?
Stack-based buffer overflow in public-facing web interface (/goform/SetIpBind) of Tenda router enables remote exploitation for arbitrary code execution, directly mapping to T1190 Exploit Public-Facing Application.
CVEs Like This One
Affected Assets
Mitigating Controls
Mitigating Controls (NIST 800-53 r5) AI
Directly validates the 'page' argument in the fromSetIpBind function to prevent stack-based buffer overflows from malformed remote inputs.
Remediates the specific buffer overflow flaw in Tenda F451 firmware version 1.0.0.7_cn_svn7958 through timely patching.
Implements memory protections like stack canaries and ASLR to block arbitrary code execution from the stack-based buffer overflow.