Vulnerability · Published Feb 23, 2026 · Assigned by VulDB

CVE-2026-3044Tenda AC8 Httpd Service UploadCfg webCgiGetUploadFile stack-based overflow

High 8.8

In plain English

A high-severity stack buffer overflow in AC8 from Tenda. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.6% (higher than 47% of all known vulnerabilities).

Severity (CVSS 3.1)8.8High

Exploit odds (30 days)0.6%top 52.7% of all CVEs

Exploited in the wildNo reportsCISA SSVC: none

Attack toolingNoneno public tooling known

Official description

A vulnerability has been found in Tenda AC8 16.03.34.06. This affects the function webCgiGetUploadFile of the file /cgi-bin/UploadCfg of the component Httpd Service. The manipulation of the argument boundary leads to stack-based buffer overflow. It is possible to initiate the attack remotely. The exploit has been disclosed to the public and may be used.

Affected products (as reported)

Vendor	Product	Versions
Tenda	AC8	16.03.34.06

Weakness: CWE-121, CWE-119 · Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H/E:P/RL:X/RC:R

References

VDB-347400 | Tenda AC8 Httpd Service UploadCfg webCgiGetUploadFile stack-based overflow vdb-entry, technical-description
VDB-347400 | CTI Indicators (IOB, IOC, IOA) signature, permissions-required
Submit #757240 | Tenda AC8V4 V16.03.34.06 Stack-based Buffer Overflow third-party-advisory
https://github.com/master-abc/cve/issues/43 exploit, issue-tracking
https://www.tenda.com.cn/ product