VulnerabilityAnalyzed

CVE-2026-6015

A vulnerability has been found in Tenda AC9 15.03.02.13.

HIGH 7.4EPSS 0.81%

Does this matter?

High impact if exploited, but EPSS currently rates exploitation as unlikely (0.81%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit.

Description

A vulnerability has been found in Tenda AC9 15.03.02.13. Impacted is the function formQuickIndex of the file /goform/QuickIndex of the component POST Request Handler. Such manipulation of the argument PPPOEPassword leads to stack-based buffer overflow. It is possible to launch the attack remotely. The exploit has been disclosed to the public and may be used.

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: 0.81% probability · 55th percentile
CISA KEV: Not listed
Weakness: CWE-119, CWE-121
Affected: tenda/ac9 firmware
Source: cna@vuldb.com

References

https://lavender-bicycle-a5a.notion.site/Tenda-AC9-QuickIndex-33153a41781f80458940f212f150a4fb?source=copy_linkExploit, Third Party Advisory
https://vuldb.com/submit/791828Third Party Advisory, VDB Entry
https://vuldb.com/vuln/356571Third Party Advisory, VDB Entry
https://vuldb.com/vuln/356571/ctiPermissions Required, VDB Entry
https://www.tenda.com.cn/Product

Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.