VulnerabilityModified
CVE-2020-26728
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.
CRITICAL 9.8EPSS 3.77%
Does this matter?
High impact if exploited, but EPSS currently rates exploitation as unlikely (3.77%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit.
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.
- CVSS 3.1
- 9.8 CRITICALCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
- EPSS
- 3.77% probability · 89th percentile
- CISA KEV
- Not listed
- Affected
- tenda/ac9 firmware
- Source
- cve@mitre.org
References
- https://github.com/Lyc-heng/Router/blob/main/Tenda/rce1.mdBroken Link
- https://github.com/Lyc-heng/routers/blob/a80b30bccfc9b76f3a4868ff28ad5ce2e0fca180/routers/rce1.mdExploit, Third Party Advisory
- https://github.com/Lyc-heng/routers/blob/main/routers/rce1.mdExploit, Third Party Advisory
- https://github.com/Lyc-heng/Router/blob/main/Tenda/rce1.mdBroken Link
- https://github.com/Lyc-heng/routers/blob/a80b30bccfc9b76f3a4868ff28ad5ce2e0fca180/routers/rce1.mdExploit, Third Party Advisory
- https://github.com/Lyc-heng/routers/blob/main/routers/rce1.mdExploit, Third Party Advisory
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.