Buffer overflow in Totolink A950rg
CVE-2026-116508
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.
Vulnerability class: Buffer Overflow
Published .
CVSS v3 metric
CVSS v3 base score 10.0 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H.
EPSS exploit prediction
No EPSS score from FIRST.org yet. New CVEs usually get one within a few days; no score means no signal yet, not low risk. How EPSS works.
Affected products
- Totolink A950rg — versions 4.1.2cu.5268_B20221104
Weakness classification (CWE)
References
- vuldb.com/vuln/426406 (technical-description, vdb-entry)
- vuldb.com/vuln/426406/cti (signature, permissions-required)
- vuldb.com/cve/CVE-2026-116508 (third-party-advisory)
- vuldb.com/submit/1022557 (third-party-advisory)
- gist.github.com/H3rmesk1t/ad72def4ccc232757d4cbabf45da72cb (exploit)
- www.totolink.net/ (product)
Frequently asked questions
- What is CVE-2026-116508?
- CVE-2026-116508 is a critical-severity vulnerability in Totolink A950rg, classified under Improper Restriction of Operations within the Bounds of a Memory Buffer. CVSS score: 10.0/10. Published 2026-10-26.
- How severe is CVE-2026-116508?
- Critical severity. CVSS v3 base score is 10.0 out of 10.