CVE-2025-6886: high-severity vulnerability in Tenda AC5
Tenda AC5 openSchedWifi stack-based overflow
Published
E-mail alert when it lands in KEV, gets a public PoC or its score goes up.
21Vexday Risk Score
No sign of exploitation. No public exploitation artifact known so far.
ssvc Trackcvss 8.7epss 1.0%
A vulnerability has been found in Tenda AC5 15.03.06.47 and classified as critical. Affected by this vulnerability is an unknown functionality of the file /goform/openSchedWifi. The manipulation of the argument schedStartTime/schedEndTime leads to stack-based buffer overflow. The attack can be launched remotely. The exploit has been disclosed to the public and may be used.
CVSS: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
Affected products
Tenda · AC5Related CVEs — Tenda AC5
In the same product, most dangerous first.
CVE-2026-4903HIGHTenda AC5 POST Request QuickIndex formQuickIndex memory corruptionEPSS 5.7%CVE-2026-4906HIGHTenda AC5 POST Request WizardHandle decodePwd stack-based overflowEPSS 2.6%CVE-2025-5863HIGHTenda AC5 SetRebootTimer formSetRebootTimer stack-based overflowEPSS 1.1%CVE-2025-5795HIGHTenda AC5 AdvSetLanip fromadvsetlanip buffer overflowEPSS 1.1%CVE-2025-5794HIGHTenda AC5 setPptpUserList formSetPPTPUserList buffer overflowEPSS 1.1%CVE-2025-6887HIGHTenda AC5 SetSysTimeCfg stack-based overflowEPSS 1.0%
References
https://lavender-bicycle-a5a.notion.site/Tenda-AC5-setSchedWifi_schedEndTime-21d53a41781f80fb8a90f08898e8d404?source=copy_linkhttps://lavender-bicycle-a5a.notion.site/Tenda-AC5-setSchedWifi_schedStartTime-21d53a41781f803f97eeddd9828c5c84?source=copy_linkhttps://vuldb.com/?ctiid.314365https://vuldb.com/?id.314365https://vuldb.com/?submit.603774https://vuldb.com/?submit.603775https://www.tenda.com.cn/