CVE-2026-5988
Published: 09 April 2026
Summary
CVE-2026-5988 is a high-severity Improper Restriction of Operations within the Bounds of a Memory Buffer (CWE-119) vulnerability in Com (inferred from references). 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 39.5th 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-2026-5988 is a stack-based buffer overflow vulnerability in Tenda F451 firmware version 1.0.0.7. It affects the formWrlsafeset function in the /goform/AdvSetWrlsafeset file, where manipulation of the mit_ssid argument triggers the overflow. Published on 2026-04-09, the issue 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) and maps to CWEs 119 (Improper Restriction of Operations within the Bounds of a Memory Buffer) and 121 (Stack-based Buffer Overflow).
The vulnerability enables remote exploitation by attackers with low privileges, such as authenticated users on the device. Low attack complexity and no user interaction are required, allowing successful exploits to compromise confidentiality, integrity, and availability at a high level, potentially granting full control over the affected router. A public exploit is available and may be used.
Advisories provide further details, including a GitHub issue at https://github.com/Jimi-Lab/cve/issues/4 and VulDB entries at https://vuldb.com/vuln/356542, https://vuldb.com/submit/792857, and https://vuldb.com/vuln/356542/cti. The vendor site is at https://www.tenda.com.cn/. Security practitioners should consult these for any patch or mitigation guidance.
EU & UK References
- 🇪🇺 ENISA EUVD: EUVD-2026-21238
Vulnerability details
A vulnerability was detected in Tenda F451 1.0.0.7. This impacts the function formWrlsafeset of the file /goform/AdvSetWrlsafeset. Performing a manipulation of the argument mit_ssid results in stack-based buffer overflow. The attack can be initiated remotely. The exploit is now public…
more
and may be used.
- CWE(s)
Related Threats
MITRE ATT&CK Enterprise TechniquesAI
Why these techniques?
The stack-based buffer overflow in the public-facing web form (/goform/AdvSetWrlsafeset) of the router firmware allows remote authenticated attackers (PR:L) to trigger RCE with high impact on C/I/A, directly enabling exploitation of public-facing applications (T1190) for initial access and exploitation for privilege escalation (T1068) to achieve full device control.
CVEs Like This One
Affected Assets
Mitigating Controls
Mitigating Controls (NIST 800-53 r5) AI
Requires validation of the mit_ssid argument in formWrlsafeset to prevent stack-based buffer overflows from malformed inputs.
Implements memory protections like stack canaries and non-executable stacks to block exploitation of the stack-based buffer overflow.
Mandates timely remediation of the specific buffer overflow flaw in Tenda F451 firmware version 1.0.0.7 via patching.