CVE-2026-6131
CVE-2026-6131 is a critical-severity vulnerability with a CVSS 3.x base score of 9.8. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-77.
Key facts
- Severity: Critical (CVSS 3.x base score 9.8)
- CVSS v2: 10.0
- CVSS v4: 8.9
- EPSS exploit prediction: 2% (76th percentile)
- Actively exploited: Not listed in CISA KEV
- EU (EUVD) id: EUVD-2026-21748
- Weakness: CWE-77
- Published:
- Last modified:
Description
A vulnerability was found in Totolink A7100RU 7.4cu.2313_b20191024. Affected by this vulnerability is the function setTracerouteCfg of the file /cgi-bin/cstecgi.cgi of the component CGI Handler. The manipulation of the argument command results in os command injection. The attack may be launched remotely. The exploit has been made public and could be used.
Frequently asked questions
- What is CVE-2026-6131?
- A vulnerability was found in Totolink A7100RU 7.4cu.2313_b20191024. Affected by this vulnerability is the function setTracerouteCfg of the file /cgi-bin/cstecgi.cgi of the component CGI Handler. The manipulation of the argument command results in os command injection. The attack may be launched remotely. The exploit has been made public and could be used.
- How severe is CVE-2026-6131?
- CVE-2026-6131 has a CVSS 3.x base score of 9.8, rated critical severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
- Is CVE-2026-6131 being actively exploited?
- It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (76th percentile), an estimate of the probability of exploitation in the next 30 days.
- How do I fix CVE-2026-6131?
- Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.
- Does CVE-2026-6131 have an EU (EUVD) identifier?
- Yes. CVE-2026-6131 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-21748.
- When was CVE-2026-6131 published?
- CVE-2026-6131 was published on 2026-04-12 and last updated on 2026-06-17.
References
- https://github.com/Litengzheng/vuldb_new/blob/main/A7100RU/vul_182/README.md
- https://vuldb.com/submit/792251
- https://vuldb.com/vuln/356995
- https://vuldb.com/vuln/356995/cti
- https://www.totolink.net/
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