Read the docs
TI-2025-13393 Aliases CVE-2025-14656GHSA-qv52-c9fr-fjw8

Tenda AC20 openSchedWifi httpd buffer overflow

Priority HIGH 77CWE-119Published · Updated

Key facts

Attack vector
Network
Privileges required
Low
User interaction
None
Attack complexity
Low
Attack requirements
None
Impact type
Code execution
Confidentiality · integrity · availability
High · High · High
Fix status
No fix listed

Attack profile from CVSS 4.0 · CNA. Fix status from CNA. Impact type from CWE-119 and the CVSS impact.

Summary

A weakness has been identified in Tenda AC20 16.03.08.12. This affects the function httpd of the file /goform/openSchedWifi. Executing a 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 used for attacks.

Why it matters now

Exploitation Proof of concept CISA SSVC · not in CISA KEV
EPSS 0.00736 54th percentileScored 2026-11-07
Public exploit Yes 1 exploit referenceTagged by the CNA and NVD
Fix No fix listed No fixed version in the sources yet

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
Poc
Automatable
Yes
Technical impact
Partial

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

VendorProductAffected versionsFixed inStatusSource
TendaAC2016.03.08.12—No fix listedCNA
  • AC20 VendorTenda Affected 16.03.08.12 Fixed in — No fix listed CNA

CPE configurations NVD · 2

CPEVersionsRoleVendor
cpe:2.3:o:tenda:ac20_firmware:16.03.08.12:*:*:*:*:*:*:*16.03.08.12VulnerableTenda
cpe:2.3:h:tenda:ac20:-:*:*:*:*:*:*:*not specified by NVDRunning onTenda
  • cpe:2.3:o:tenda:ac20_firmware:16.03.08.12:*:*:*:*:*:*:* Versions 16.03.08.12 Vulnerable ·Tenda
  • cpe:2.3:h:tenda:ac20:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Tenda

Remediation

No fixed version listed by the sources yet.

Timeline

  1. 2026-10-02 Threatist record created from CVE-2025-14656
  2. 2026-10-03 Alias added: GHSA-qv52-c9fr-fjw8

References

Exploit 1

Other 1

  • TI-2025-13392 Tenda AC20 httpd SetSysAutoRebbotCfg formSetRebootTimer stack-based overflow CVSS 4.0HIGH 8.7
  • TI-2025-13391 Tenda AC20 httpd setPptpUserList formSetPPTPUserList stack-based overflow CVSS 4.0HIGH 8.7
  • TI-2025-14008 Tenda AC20 PowerSaveSet sscanf buffer overflow CVSS 4.0HIGH 8.7
  • TI-2025-12122 Tenda AC20 WifiExtraSet buffer overflow CVSS 4.0HIGH 8.7
  • TI-2025-09906 Tenda AC20 HTTP POST Request SetPptpServerCfg strcpy buffer overflow CVSS 4.0HIGH 8.7
  • TI-2025-09292 Tenda AC20 GetParentControlInfo strcpy buffer overflow CVSS 4.0HIGH 8.7
See all 19 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences