TI-2026-01841 Aliases CVE-2026-2192 GHSA-838g-pm36-9pfv

Tenda AC9 formGetRebootTimer stack-based overflow

HIGH 72CWE-119Published 2026-02-08 · Updated 2026-02-23

Key facts

Attack vector: Network
Privileges required: High
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 security vulnerability has been detected in Tenda AC9 15.03.06.42_multi. Affected by this vulnerability is the function formGetRebootTimer. Such manipulation of the argument sys.schedulereboot.start_time/sys.schedulereboot.end_time leads to stack-based buffer overflow. The attack may be launched remotely. The exploit has been disclosed publicly and may be used.

Why it matters now

Exploitation Proof of concept CISA SSVC · not in CISA KEV

EPSS 0.00786 56th 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: 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

Vendor	Product	Affected versions	Fixed in	Status	Source
Tenda	AC9	15.03.06.42_multi	—	No fix listed	CNA

AC9 VendorTenda Affected 15.03.06.42_multi Fixed in — No fix listed CNA

CPE configurations NVD · 2

CPE	Versions	Role	Vendor
cpe:2.3:o:tenda:ac9_firmware:5.03.06.42_multi:::::::*	5.03.06.42_multi	Vulnerable	Tenda
cpe:2.3:h:tenda:ac9:-:::::::*	not specified by NVD	Running on	Tenda

cpe:2.3:o:tenda:ac9_firmware:5.03.06.42_multi:*:*:*:*:*:*:* Versions 5.03.06.42_multi Vulnerable ·Tenda
cpe:2.3:h:tenda:ac9:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Tenda

Remediation

No fixed version listed by the sources yet.

Timeline

2026-10-02 Threatist record created from CVE-2026-2192
2026-10-03 Alias added: GHSA-838g-pm36-9pfv

References

Exploit 1

https://github.com/glkfc/IoT-Vulnerability/blob/main/Tenda/tenda4.md

Other 1

https://www.tenda.com.cn/

TI-2018-10434 An issue was discovered on Tenda AC7 devices with firmware through V15.03.06.44_CN(AC7)… KEVCVSS 3.1CRITICAL 9.8
TI-2025-28777 In the Tenda ac9 v1.0 router with firmware V15.03.05.14_multi, there is a stack overflow… CVSS 3.1CRITICAL 9.8
TI-2025-28776 In Tenda ac9 v1.0 with firmware V15.03.05.14_multi, the rebootTime parameter of… CVSS 3.1CRITICAL 9.8
TI-2025-28775 In Tenda AC9 v1.0 with firmware V15.03.05.14_multi, the security parameter of… CVSS 3.1CRITICAL 9.8
TI-2025-28726 Tenda AC9 v15.03.05.14 was discovered to contain a command injection vulnerability via the Telnet function. CVSS 3.1CRITICAL 9.8
TI-2025-28675 Tenda AC9 V15.03.06.42_multi was found to contain a command injection vulnerability in… CVSS 3.1CRITICAL 9.8

See all 91 →

Sources

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