What’s Vulnerable › Vulnerabilities

CVE-2026-1637: Tenda AC21 AdvSetMacMtuWan fromAdvSetMacMtuWan stack-based overflow

• Severity: high (CVSS 8.8 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.7% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2026-01-29 · updated 2026-06-17
• Weakness: CWE-119

Description

A vulnerability was identified in Tenda AC21 16.03.08.16. The affected element is the function fromAdvSetMacMtuWan of the file /goform/AdvSetMacMtuWan. The manipulation leads to stack-based buffer overflow. Remote exploitation of the attack is possible. The exploit is publicly available and might be used.

Affected products

• Tenda AC21: 16.03.08.16

References

• https://github.com/LX-LX88/cve/issues/25
• https://vuldb.com/?ctiid.343416
• https://vuldb.com/?id.343416
• https://vuldb.com/?submit.740865
• https://www.tenda.com.cn/
• https://github.com/LX-LX88/cve/issues/25

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