TI-2026-03699 Aliases CVE-2026-4252 GHSA-7fp9-cvqr-rwmf

Tenda AC8 IPv6 check_is_ipv6 ip address for authentication

HIGH 81CWE-287Published 2026-03-16 · Updated 2026-03-16

Key facts

Attack vector: Network
Privileges required: None
User interaction: None
Attack complexity: Low
Attack requirements: None
Impact type: Security bypass
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-287.

Summary

A vulnerability was identified in Tenda AC8 16.03.50.11. Affected by this issue is the function check_is_ipv6 of the component IPv6 Handler. The manipulation leads to reliance on ip address for authentication. It is possible to initiate the attack remotely. The exploit is publicly available and might be used.

Why it matters now

Exploitation Proof of concept CISA SSVC · not in CISA KEV

EPSS 0.01311 70th 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: 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	AC8	16.03.50.11	—	No fix listed	CNA

AC8 VendorTenda Affected 16.03.50.11 Fixed in — No fix listed CNA

CPE configurations NVD · 2

CPE	Versions	Role	Vendor
cpe:2.3:o:tenda:ac8_firmware:16.03.50.11:::::::*	16.03.50.11	Vulnerable	Tenda
cpe:2.3:h:tenda:ac8:-:::::::*	not specified by NVD	Running on	Tenda

cpe:2.3:o:tenda:ac8_firmware:16.03.50.11:*:*:*:*:*:*:* Versions 16.03.50.11 Vulnerable ·Tenda
cpe:2.3:h:tenda:ac8:-:*:*:*:*:*:*:* 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-2026-4252
2026-10-03 Alias added: GHSA-7fp9-cvqr-rwmf

References

Exploit 1

https://github.com/digitalandrew/tenda_ac8_v5/blob/main/poc_ipv6_auth_bypass.py

Other 1

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

TI-2025-20992 Tenda AC8 V16.03.34.06 is vulnerable to Buffer Overflow in the fromSetRouteStatic function via the parameter list. CVSS 3.1CRITICAL 9.8
TI-2024-31083 Tenda AC8v4 V16.03.34.06 has a stack overflow vulnerability in the fromAdvSetMacMtuWan function. CVSS 3.1CRITICAL 9.8
TI-2023-20197 Tenda AC10 V1.0 V15.03.06.23, AC1206 V15.03.06.23, AC8 v4 V16.03.34.06, AC6 V2.0… CVSS 3.1CRITICAL 9.8
TI-2023-20195 Tenda AC1206 V15.03.06.23, AC8 V4 V16.03.34.06, AC5 V1.0 V15.03.06.28, AC10 v4.0… CVSS 3.1CRITICAL 9.8
TI-2023-20191 Tenda AC10 V1.0 V15.03.06.23, AC1206 V15.03.06.23, AC8 v4 V16.03.34.06, AC6 V2.0… CVSS 3.1CRITICAL 9.8
TI-2023-04372 Tenda AC8 formSetDeviceName stack-based overflow CVSS 3.1CRITICAL 9.8

See all 61 →

Sources

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