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TI-2026-00437 Aliases CVE-2026-0640GHSA-873q-r7q9-7r4r

Tenda AC23 PowerSaveSet sscanf buffer overflow

Priority HIGH 73CWE-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 AC23 16.03.07.52. This affects the function sscanf of the file /goform/PowerSaveSet. Executing a manipulation of the argument Time can lead to buffer overflow. The attack can be launched remotely. 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 0.03476 89th percentileScored 2026-11-07
Public exploit Yes 2 exploit referencesTagged 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
No
Technical impact
Total

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

Affected products

VendorProductAffected versionsFixed inStatusSource
TendaAC2316.03.07.52—No fix listedCNA
  • AC23 VendorTenda Affected 16.03.07.52 Fixed in — No fix listed CNA

CPE configurations NVD · 2

CPEVersionsRoleVendor
cpe:2.3:o:tenda:ac23_firmware:16.03.07.52:*:*:*:*:*:*:*16.03.07.52VulnerableTenda
cpe:2.3:h:tenda:ac23:-:*:*:*:*:*:*:*not specified by NVDRunning onTenda
  • cpe:2.3:o:tenda:ac23_firmware:16.03.07.52:*:*:*:*:*:*:* Versions 16.03.07.52 Vulnerable ·Tenda
  • cpe:2.3:h:tenda:ac23:-:*:*:*:*:*:*:* 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-2026-0640
  2. 2026-10-03 Alias added: GHSA-873q-r7q9-7r4r

References

Exploit 2

Other 1

  • TI-2023-21552 Tenda AC23 Vv16.03.07.45_cn is vulnerable to Buffer Overflow via sub_450A4C function. CVSS 3.1CRITICAL 9.8
  • TI-2023-00742 Tenda AC23 httpd formGetSysToolDDNS out-of-bounds write CVSS 3.1CRITICAL 9.8
  • TI-2025-08798 Tenda AC21/AC23 GetParentControlInfo stack-based overflow CVSS 4.0CRITICAL 9.3
  • TI-2026-01118 Tenda AC23 WifiExtraSet buffer overflow CVSS 4.0HIGH 8.7
  • TI-2025-13894 Tenda AC23 HTTP POST Request formSetPPTPUserList buffer overflow CVSS 4.0HIGH 8.7
  • TI-2025-13893 Tenda AC23 SetIpMacBind fromSetIpMacBind stack-based overflow CVSS 4.0HIGH 8.7
See all 26 →

Sources

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