TI-2023-09979 Aliases CVE-2023-24333 GHSA-94v8-mxjr-cfmp

A stack overflow vulnerability in Tenda AC21 with firmware version…

HIGH 73CWE-94Published 2024-02-21 · Updated 2024-08-28

Key facts

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

Attack profile from CVSS 3.1 · CISA ADP. Fix status from CNA. Impact type from CWE-94.

Summary

A stack overflow vulnerability in Tenda AC21 with firmware version US_AC21V1.0re_V16.03.08.15_cn_TDC01 allows attackers to run arbitrary commands via crafted POST request to /goform/openSchedWifi.

Why it matters now

Exploitation Proof of concept CISA SSVC · not in CISA KEV

EPSS 0.00475 41st percentileScored 2026-11-07

Public exploit Yes 1 exploit referenceTagged by 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
—	—	all versions	—	No fix listed	CNA

— Vendor— Affected all versions Fixed in — No fix listed CNA

CPE configurations NVD · 2

CPE	Versions	Role	Vendor
cpe:2.3:o:tenda:ac21_firmware:16.03.08.15:::::::*	16.03.08.15	Vulnerable	Tenda
cpe:2.3:h:tenda:ac21:1.0:::::::*	1.0	Running on	Tenda

cpe:2.3:o:tenda:ac21_firmware:16.03.08.15:*:*:*:*:*:*:* Versions 16.03.08.15 Vulnerable ·Tenda
cpe:2.3:h:tenda:ac21:1.0:*:*:*:*:*:*:* Versions 1.0 Running on ·Tenda

Remediation

No fixed version listed by the sources yet.

Timeline

2026-10-02 Threatist record created from CVE-2023-24333
2026-10-03 Alias added: GHSA-94v8-mxjr-cfmp

References

Exploit 1

https://github.com/caoyebo/CVE/tree/main/TENDA%20AC21%20-%20CVE-2023-24333

TI-2025-08798 Tenda AC21/AC23 GetParentControlInfo stack-based overflow CVSS 4.0CRITICAL 9.3
TI-2026-01322 Tenda AC21 AdvSetMacMtuWan fromAdvSetMacMtuWan stack-based overflow CVSS 4.0HIGH 8.7
TI-2025-12293 Tenda AC21 SetSysTimeCfg stack-based overflow CVSS 4.0HIGH 8.7
TI-2025-12292 Tenda AC21 SetIpMacBind stack-based overflow CVSS 4.0HIGH 8.7
TI-2025-11565 Tenda AC21 SetPptpServerCfg formSetPPTPServer buffer overflow CVSS 4.0HIGH 8.7
TI-2025-10159 Tenda AC21 SetStaticRouteCfg sscanf buffer overflow CVSS 4.0HIGH 8.7

See all 28 →

Sources

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