CVE-2025-9088

7.4 highEPSS 0.9%

High (7.4) in tenda ac20 firmware. EPSS 0.9% chance of exploitation in the next 30 days.

A vulnerability was found in Tenda AC20 16.03.08.12. This vulnerability affects the function save_virtualser_data of the file /goform/formSetVirtualSer. The manipulation of the argument list leads to stack-based buffer overflow. The attack can be initiated remotely. The exploit has been disclosed to the public and may be used.

Severity

CVSS 4.0

7.4 high

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

CVSS 3.1

9.8 critical

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

EPSS: 0.9% chance of exploitation in the next 30 days; higher than 60% of CVEs (scores of 2026-10-31)
CWEs: CWE-787, CWE-119, CWE-121
Published: 2025-08-16
Modified: 2026-06-17
Record from: the NVD, synced 2026-10-19

Affected

tenda:ac20_firmware

References

https://github.com/ZZ2266/.github.io/tree/main/AC20/formSetVirtualSer
https://github.com/ZZ2266/.github.io/tree/main/AC20/formSetVirtualSer#poc-python-exploit-script
https://vuldb.com/?ctiid.320356
https://vuldb.com/?id.320356
https://vuldb.com/?submit.632038

Check your stack JSON