CVE-2022-40868
CVE-2022-40868 is a critical-severity vulnerability in Tenda W20e Firmware 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-787.
Key facts
- Severity: Critical (CVSS 3.x base score 9.8)
- EPSS exploit prediction: 1% (58th percentile)
- Actively exploited: Not listed in CISA KEV
- Weakness: CWE-787
- Affected product: Tenda W20e Firmware
- Published:
- Last modified:
Description
Tenda W20E router V15.11.0.6 (US_W20EV4.0br_V15.11.0.6(1068_1546_841)_CN_TDC) contains a stack overflow vulnerability in the function formDelDhcpRule with the request /goform/delDhcpRules/
Frequently asked questions
- What is CVE-2022-40868?
- Tenda W20E router V15.11.0.6 (US_W20EV4.0br_V15.11.0.6(1068_1546_841)_CN_TDC) contains a stack overflow vulnerability in the function formDelDhcpRule with the request /goform/delDhcpRules/
- How severe is CVE-2022-40868?
- CVE-2022-40868 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-2022-40868 being actively exploited?
- It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (58th percentile), an estimate of the probability of exploitation in the next 30 days.
- What products are affected by CVE-2022-40868?
- CVE-2022-40868 affects Tenda W20e Firmware. See the affected-products list for the exact vulnerable versions.
- How do I fix CVE-2022-40868?
- 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.
- When was CVE-2022-40868 published?
- CVE-2022-40868 was published on 2022-09-23 and last updated on 2026-06-17.
References
Affected products (1)
- cpe:2.3:o:tenda:w20e_firmware:15.11.0.6:*:*:*:*:*:*:*
More vulnerabilities in Tenda W20e Firmware
- CVE-2026-24112 — Critical (CVSS 9.8): An issue was discovered in Tenda W20E V4.0br_V15.11.0.6. Attackers may exploit the vulnerability by specifying the…
- CVE-2026-24110 — Critical (CVSS 9.8): An issue was discovered in Tenda W20E V4.0br_V15.11.0.6. Attackers may send overly long `addDhcpRules` data. When these…
- CVE-2026-24115 — Critical (CVSS 9.8): An issue was discovered in Tenda W20E V4.0br_V15.11.0.6. Failure to validate the sizes of `gstup` and `gstdwn` before…
- CVE-2026-24114 — Critical (CVSS 9.8): An issue was discovered in Tenda W20E V4.0br_V15.11.0.6. Failure to validate `pPortMapIndex` may lead to buffer…
- CVE-2026-24113 — Critical (CVSS 9.8): An issue was discovered in Tenda W20E V4.0br_V15.11.0.6. Attackers may exploit the vulnerability by controlling the…
- CVE-2026-24111 — Critical (CVSS 9.8): An issue was discovered in Tenda W20E V4.0br_V15.11.0.6. Attackers may exploit the vulnerability by specifying the…
All CVEs affecting Tenda W20e Firmware →
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