CVE-2025-9791

moderate-risk
Published 2025-09-01

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.

Do I need to act?

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0.35% chance of exploitation
EPSS score — low exploit probability
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Not on CISA KEV list
No confirmed active exploitation reported to CISA
?
Patch status unknown
Check vendor advisories for fix availability and mitigation guidance
8
CVSS 8.8/10 High
NETWORK / LOW complexity

Affected Products (1)

Affected Vendors

Tenda

References (8)

Exploit https://github.com/Cpppq43/Tenda/blob/main/Tenda_AC20_V16.03.08.05.md
Exploit https://github.com/Cpppq43/Tenda/blob/main/Tenda_AC20_V16.03.08.05.md#poc
Permissions Required https://vuldb.com/?ctiid.322106
Third Party Advisory https://vuldb.com/?id.322106
Third Party Advisory https://vuldb.com/?submit.641088
Product https://www.tenda.com.cn/
Exploit https://github.com/Cpppq43/Tenda/blob/main/Tenda_AC20_V16.03.08.05.md
Exploit https://github.com/Cpppq43/Tenda/blob/main/Tenda_AC20_V16.03.08.05.md#poc
36
/ 100
moderate-risk
Severity 30/34 · Critical
Exploitability 1/34 · Minimal
Exposure 5/34 · Minimal