Vulnerability · Published Oct 26, 2026 · Assigned by VulDB

CVE-2026-116508TOTOLINK A950RG Device-Information CGI infostat.cgi sub_402340 stack-based overflow

Critical 10.0

In plain English

A critical-severity stack buffer overflow in A950RG from TOTOLINK. Proof-of-concept exploit code is public. The chance it is exploited in the next 30 days is estimated at 0.6% (higher than 49% of all known vulnerabilities).

Severity (CVSS 3.1)10.0Critical

Exploit odds (30 days)0.6%top 50.7% of all CVEs

Exploited in the wildNo reportsCISA SSVC: poc

Attack toolingNoneno public tooling known

Official description

A security flaw has been discovered in TOTOLINK A950RG 4.1.2cu.5268_B20221104. Affected by this issue is the function sub_402340 of the file infostat.cgi of the component Device-Information CGI. Performing a manipulation of the argument CONTENT_LENGTH results in stack-based buffer overflow. Remote exploitation of the attack is possible. The exploit has been released to the public and may be used for attacks.

Affected products (as reported)

Vendor	Product	Versions
TOTOLINK	A950RG	4.1.2cu.5268_B20221104

Weakness: CWE-121, CWE-119 · Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H/E:P/RL:X/RC:R

References

VDB-426406 | TOTOLINK A950RG Device-Information CGI infostat.cgi sub_402340 stack-based overflow vdb-entry, technical-description
VDB-426406 | CTI Indicators (IOB, IOC, IOA) signature, permissions-required
CVE-2026-116508 | CVE Analysis and Report third-party-advisory
Submit #1022557 | TOTOLINK A950RG V4.1.2cu.5268_B20221104 Stack Buffer Overflow third-party-advisory
https://gist.github.com/H3rmesk1t/ad72def4ccc232757d4cbabf45da72cb exploit
https://www.totolink.net/ product