CVE-2025-15356

Tenda AC20 PowerSaveSet sscanf buffer overflow

HIGH
8.8
CVSS Score
Published: December 30, 2025 at 08:32 PM UTC
Updated: June 17, 2026 at 08:37 AM UTC
1 product affected across 1 vendorAC20 Firmware

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Severity
HIGH8.8
Exploit prediction
EPSS 4%
SSVC
PoC

Description

A vulnerability has been found in Tenda AC20 up to 16.03.08.12. The impacted element is the function sscanf of the file /goform/PowerSaveSet. The manipulation of the argument powerSavingEn/time/powerSaveDelay/ledCloseType leads to buffer overflow. The attack can be initiated remotely. The exploit has been disclosed to the public and may be used.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

Remediation

No guide yet

No remediation guidance has been written for this CVE yet, and no fixed version or vendor advisory is recorded against it.

References (6)

VDB EntryTechnical DescriptionThird Party Advisory
Source: cverecord
https://vuldb.com/?id.338742
SignaturePermissions RequiredVDB Entry
Source: cverecord
https://vuldb.com/?ctiid.338742
Third Party AdvisoryVDB Entry
Source: cverecord
https://vuldb.com/?submit.726360
Broken LinkExploitThird Party Advisory
Source: cverecord
https://github.com/xyh4ck/iot_poc/tree/main/Tenda%20AC20_Buffer_Overflow
Product
Source: cverecord
https://www.tenda.com.cn/

SSVC — Action Prioritization

SSVCPoCNot automatableTotal impact

SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.

CVSS

8.8HIGHVulDB
Vector?

Quick Info

StatusANALYZED
CWE
CWE-120CWE-119

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