CVE-2025-9088

Tenda Ac20 Firmware buffer overflow

8.8 HIGHPublic exploitEPSS 0.88%

Published16 Aug 2025

Description

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.

CVSS 3.1 breakdown

Attack vectorNetwork

Attack complexityLow

Privileges requiredLow

User interactionNone

ScopeUnchanged

ConfidentialityHigh

IntegrityHigh

AvailabilityHigh

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

Affected products

Tenda Ac20 Firmware16.03.08.12

Remediation

No fixed version is recorded in the NVD data. Check the vendor advisory for the latest guidance.

References

https://github.com/ZZ2266/.github.io/tree/main/AC20/formSetVirtualSerExploitThird Party Advisory
https://github.com/ZZ2266/.github.io/tree/main/AC20/formSetVirtualSer#poc-python-exploit-scriptExploitThird Party Advisory
https://vuldb.com/?ctiid.320356Permissions RequiredVDB Entry
https://vuldb.com/?id.320356Third Party AdvisoryVDB Entry
https://vuldb.com/?submit.632038ExploitThird Party AdvisoryVDB Entry
https://www.tenda.com.cn/Product

Related CVEs

Recent high-severity vulnerabilities sharing a weakness type.

Frequently asked

Is CVE-2025-9088 being actively exploited?

CVE-2025-9088 is not in the CISA KEV catalog. A public exploit reference exists, so treat it as exploitable. Its EPSS exploit probability is 0.88%.

How severe is CVE-2025-9088?

CVE-2025-9088 has a CVSS 3.1 base score of 8.8, rated high. EPSS estimates a 0.88% probability of exploitation.

Which products are affected by CVE-2025-9088?

Affected products include Tenda Ac20 Firmware.

How do I fix CVE-2025-9088?

Apply the vendor's patch or advisory guidance, then verify no affected versions remain across your devices.

How Secuno handles this

Secuno correlates vulnerabilities like CVE-2025-9088 against the real software inventory on every managed device, as each hourly inventory arrives. Rather than a static severity, each match is scored in context: exploit availability, EPSS, the asset's exposure, and business criticality decide where it lands in the queue. If an affected version is present anywhere across your portfolio, it surfaces automatically with a prioritised remediation path.

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Data from the NVD, CISA KEV catalog and FIRST EPSS. CVSS 3.1 base score shown where available.