What’s Vulnerable › Vulnerabilities

CVE-2020-26728

• Severity: critical (CVSS 9.8 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 3.8% probability of exploitation in the next 30 days
• Public exploit or detection template: yes
• Published: 2022-02-11 · updated 2026-06-17

Description

A vulnerability was discovered in Tenda AC9 v3.0 V15.03.06.42_multi and Tenda AC9 V1.0 V15.03.05.19(6318)_CN which allows for remote code execution via shell metacharacters in the guestuser field to the __fastcall function with a POST request.

Affected products

• Tenda AC9: 15.03.06.42_multi, 15.03.05.19(6318)_cn

References

• https://github.com/Lyc-heng/Router/blob/main/Tenda/rce1.md
• https://github.com/Lyc-heng/routers/blob/a80b30bccfc9b76f3a4868ff28ad5ce2e0fca180/routers/rce1.md
• https://github.com/Lyc-heng/routers/blob/main/routers/rce1.md
• https://github.com/Lyc-heng/Router/blob/main/Tenda/rce1.md
• https://github.com/Lyc-heng/routers/blob/a80b30bccfc9b76f3a4868ff28ad5ce2e0fca180/routers/rce1.md
• https://github.com/Lyc-heng/routers/blob/main/routers/rce1.md

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