CVE-2026-9432
CVE-2026-9432 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% (75th percentile)
- Actively exploited: Not listed in CISA KEV
- EU (EUVD) id: EUVD-2026-31637
- Weakness: CWE-77
- Published:
- Last modified:
Description
A security flaw has been discovered in Totolink A8000RU 7.1cu.643_b20200521. This vulnerability affects the function setWiFiAdvancedCfg of the file /cgi-bin/cstecgi.cgi of the component Web Management Interface. The manipulation of the argument bgProtection results in os command injection. The attack can be launched remotely. The exploit has been released to the public and may be used for attacks.
Frequently asked questions
- What is CVE-2026-9432?
- A security flaw has been discovered in Totolink A8000RU 7.1cu.643_b20200521. This vulnerability affects the function setWiFiAdvancedCfg of the file /cgi-bin/cstecgi.cgi of the component Web Management Interface. The manipulation of the argument bgProtection results in os command injection. The attack can be launched remotely. The exploit has been released to the public and may be used for attacks.
- How severe is CVE-2026-9432?
- CVE-2026-9432 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-2026-9432 being actively exploited?
- It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (75th percentile), an estimate of the probability of exploitation in the next 30 days.
- How do I fix CVE-2026-9432?
- 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-2026-9432 have an EU (EUVD) identifier?
- Yes. CVE-2026-9432 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-31637.
- When was CVE-2026-9432 published?
- CVE-2026-9432 was published on 2026-05-25 and last updated on 2026-06-17.
References
- https://github.com/Litengzheng/vuldb_new2/blob/main/A8000RU/vul_353/README.md
- https://vuldb.com/submit/813905
- https://vuldb.com/vuln/365413
- https://vuldb.com/vuln/365413/cti
- https://www.totolink.net/
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