CVE-2025-9091: low-severity vulnerability in Tenda AC20
Tenda AC20 shadow hard-coded credentials
Published · Updated
E-mail alert when it lands in KEV, gets a public PoC or its score goes up.
8Vexday Risk Score
No sign of exploitation. No public exploitation artifact known so far.
ssvc Trackcvss 2epss 0.2%
A security flaw has been discovered in Tenda AC20 16.03.08.12. Affected by this vulnerability is an unknown functionality of the file /etc_ro/shadow. The manipulation leads to hard-coded credentials. It is possible to launch the attack on the local host. The complexity of an attack is rather high. The exploitation appears to be difficult. The exploit has been disclosed to the public and may be used.
CVSS:4.0/AV:L/AC:H/AT:N/PR:L/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N/E:P
Affected products
Tenda · AC20Related CVEs — Tenda AC20
In the same product, most dangerous first.
CVE-2025-9090MEDIUMTenda AC20 Telnet Service telnet websFormDefine command injectionEPSS 16.7%CVE-2025-15356HIGHTenda AC20 PowerSaveSet sscanf buffer overflowEPSS 4.0%CVE-2025-14655HIGHTenda AC20 httpd SetSysAutoRebbotCfg formSetRebootTimer stack-based overflowEPSS 3.3%CVE-2025-14654HIGHTenda AC20 httpd setPptpUserList formSetPPTPUserList stack-based overflowEPSS 3.3%CVE-2025-8160HIGHTenda AC20 httpd SetSysTimeCfg buffer overflowEPSS 1.5%CVE-2025-9089HIGHTenda AC20 SetIpMacBind sub_48E628 stack-based overflowEPSS 1.2%
References
https://github.com/ZZ2266/.github.io/blob/main/AC20/hardcoded%20password/readme.mdhttps://github.com/ZZ2266/.github.io/blob/main/AC20/hardcoded%20password/readme.md#descriptionhttps://github.com/ZZ2266/.github.io/tree/main/AC20/hardcoded%20password/readme.mdhttps://vuldb.com/?ctiid.320359https://vuldb.com/?id.320359https://vuldb.com/?submit.632268https://www.tenda.com.cn/