VulnerabilityAnalyzed
CVE-2025-9791
A weakness has been identified in Tenda AC20 16.03.08.05.
HIGH 7.4EPSS 0.84%
Does this matter?
High impact if exploited, but EPSS currently rates exploitation as unlikely (0.84%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit.
Description
A weakness has been identified in Tenda AC20 16.03.08.05. This vulnerability affects unknown code of the file /goform/fromAdvSetMacMtuWan. This manipulation of the argument wanMTU causes stack-based buffer overflow. Remote exploitation of the attack is possible. The exploit has been made available to the public and could be exploited.
- CVSS 4.0
- 7.4 HIGHCVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:P/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/M
- EPSS
- 0.84% probability · 56th percentile
- CISA KEV
- Not listed
- Weakness
- CWE-119, CWE-121, CWE-787
- Affected
- tenda/ac20 firmware
- Source
- cna@vuldb.com
References
- https://github.com/Cpppq43/Tenda/blob/main/Tenda_AC20_V16.03.08.05.mdExploit, Third Party Advisory
- https://github.com/Cpppq43/Tenda/blob/main/Tenda_AC20_V16.03.08.05.md#pocExploit, Third Party Advisory
- https://vuldb.com/?ctiid.322106Permissions Required, VDB Entry
- https://vuldb.com/?id.322106Third Party Advisory, VDB Entry
- https://vuldb.com/?submit.641088Third Party Advisory, VDB Entry
- https://www.tenda.com.cn/Product
- https://github.com/Cpppq43/Tenda/blob/main/Tenda_AC20_V16.03.08.05.mdExploit, Third Party Advisory
- https://github.com/Cpppq43/Tenda/blob/main/Tenda_AC20_V16.03.08.05.md#pocExploit, Third Party Advisory
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.