CVE-2025-9088: Tenda AC20

Tenda AC20 formSetVirtualSer save_virtualser_data stack-based overflow

CVSS 8.7 HighEPSS 0.010 · 63rd percentile

Published by the CVE Program (CNA: VulDB) at 16 Aug 2025, 23:02 UTC. agentprime has not analysed this yet, so whether it affects any app is not known. This CVE names a vendor and product rather than a package, so the lockfile check doesn’t match it.

Affected products, as the CNA wrote them
Vendor	Product	Versions
Tenda	AC20	affected 16.03.08.12

Identifiers

CVE-2025-9088

CNA

VulDB

Weakness (CWE)

CWE-119 · CWE-121

Not analysed yet

We haven’t published our own analysis of this CVE. If a person reviews it, this page will say what’s affected and what has to be true for it to matter.

Severity and exploitation

Score	Rating	CVSS	Vector	Source
8.7	High	4.0	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	CNA (VulDB)Used for this record
8.8	High	3.1	CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H/E:P/RL:X/RC:R	CNA (VulDB)
8.8	High	3.0	CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H/E:P/RL:X/RC:R	CNA (VulDB)
9.0	High	2.0	AV:N/AC:L/Au:S/C:C/I:C/A:C/E:POC/RL:ND/RC:UR	CNA (VulDB)

CISA KEV Not listed.
EPSS 0.010, the 63rd percentile, on 13 Nov 2026: FIRST’s estimate of the chance of exploitation in the next 30 days.

Timeline

This record came from the full history of the CVE Program, published 16 Aug 2025. New records show when each source confirmed them.

Sources

References from the CNA

vuldb.com/?id.320356 vdb-entrytechnical-description
vuldb.com/?ctiid.320356 signaturepermissions-required
vuldb.com/?submit.632038 third-party-advisory
github.com/ZZ2266/.github.io/tree/main/AC20/formSetVirtualSer related
www.tenda.com.cn/ product
github.com/ZZ2266/.github.io/tree/main/AC20/formSetVirtualSer#poc-python-exploit-script exploit

Facts on this page come from the CVE List as the CNA published them, with CVSS from the sources named above, CISA KEV and FIRST EPSS. Vendors, products and versions are shown as the CNA wrote them. We don’t reproduce the CVE’s description.