CVE-2025-14656

Tenda AC20 openSchedWifi httpd buffer overflow

HIGH
8.8
CVSS Score
Published: December 14, 2025 at 11:02 AM UTC
Updated: October 7, 2026 at 07:10 PM UTC
2 products affected across 1 vendorAC20 FirmwareAc20

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Severity
HIGH8.8
Exploit prediction
EPSS 0.7%
SSVC
PoC

Description

A weakness has been identified in Tenda AC20 16.03.08.12. This affects the function httpd of the file /goform/openSchedWifi. Executing manipulation of the argument schedStartTime/schedEndTime can lead to buffer overflow. The attack may be performed from remote. The exploit has been made available to the public and could be exploited.

Affected

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

tenda-ac20 (same device)
80%
All versions

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 (5)

VDB EntryTechnical DescriptionThird Party Advisory
Source: cverecord
https://vuldb.com/?id.336389
SignaturePermissions RequiredVDB Entry
Source: cverecord
https://vuldb.com/?ctiid.336389
Third Party AdvisoryVDB Entry
Source: cverecord
https://vuldb.com/?submit.712917
Product
Source: cverecord
https://www.tenda.com.cn/

SSVC — Action Prioritization

SSVCPoCAutomatablePartial impact

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

CVSS

8.8HIGHVulDB
Vector?

Quick Info

StatusMODIFIED
CWE
CWE-120CWE-119

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