CVE-2026-9431
CVE-2026-9431 is a high-severity vulnerability with a CVSS 3.x base score of 8.8. 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-119.
Key facts
- Severity: High (CVSS 3.x base score 8.8)
- CVSS v2: 9.0
- CVSS v4: 7.4
- EPSS exploit prediction: 0% (35th percentile)
- Actively exploited: Not listed in CISA KEV
- EU (EUVD) id: EUVD-2026-31639
- Weakness: CWE-119
- Published:
- Last modified:
Description
A vulnerability was identified in Tenda F1202 1.2.0.20(408). This affects the function fromPptpUserAdd of the file /goform/PptpUserAdd. The manipulation of the argument opttype leads to stack-based buffer overflow. The attack can be initiated remotely. The exploit is publicly available and might be used.
Frequently asked questions
- What is CVE-2026-9431?
- A vulnerability was identified in Tenda F1202 1.2.0.20(408). This affects the function fromPptpUserAdd of the file /goform/PptpUserAdd. The manipulation of the argument opttype leads to stack-based buffer overflow. The attack can be initiated remotely. The exploit is publicly available and might be used.
- How severe is CVE-2026-9431?
- CVE-2026-9431 has a CVSS 3.x base score of 8.8, rated high severity. It is exploitable over network with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
- Is CVE-2026-9431 being actively exploited?
- It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (35th percentile), an estimate of the probability of exploitation in the next 30 days.
- How do I fix CVE-2026-9431?
- Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
- Does CVE-2026-9431 have an EU (EUVD) identifier?
- Yes. CVE-2026-9431 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-31639.
- When was CVE-2026-9431 published?
- CVE-2026-9431 was published on 2026-05-25 and last updated on 2026-06-17.
References
- https://github.com/Litengzheng/vuldb_new2/blob/main/F1202/vul_35/README.md
- https://vuldb.com/submit/813916
- https://vuldb.com/vuln/365412
- https://vuldb.com/vuln/365412/cti
- https://www.tenda.com.cn/
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