PT-2026-21419 · Tenda · Tenda Ac18

Liyu Zhu · Published 2026-02-22 · Updated 2026-02-22 · CVE-2026-2930

Positive Technologies (AI Summary)

CVSS v3.1

8.8

High

Base vector

AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Name of the Vulnerable Software and Affected Versions Tenda A18 version 15.13.07.13

Description A flaw exists in the Tenda A18 device that could allow for remote code execution. The issue is located within the Httpd Service, specifically in the webCgiGetUploadFile() function found in the /cgi-bin/UploadCfg file. Manipulation of a boundary condition within this function can lead to a stack-based buffer overflow. The exploit for this issue is publicly available.

Recommendations Update to a newer version that contains a fix for this vulnerability. As a temporary workaround, consider restricting access to the /cgi-bin/UploadCfg file.

Exploit

Fix

Stack Overflow

Buffer Overflow

Weakness Enumeration

CWE-121

CWE-119

Related Identifiers

CVE-2026-2930

Affected Products

Tenda Ac18

References · 11

• 🔥 https://github.com/master-abc/cve/issues/40 · Exploit
• https://nvd.nist.gov/vuln/detail/CVE-2026-2930 · Security Note
• https://osv.dev/vulnerability/CVE-2026-2930 · Vendor Advisory
• https://twitter.com/CVEnew/status/2025523998809866294 · Twitter Post
• https://tenda.com.cn · Note
• https://vuldb.com/?id.347277 · Note
• https://vuldb.com/?ctiid.347277 · Note
• https://t.me/cveNotify/152763 · Telegram Post
• https://t.me/CVEtracker/45421 · Telegram Post
• https://twitter.com/VulmonFeeds/status/2025472584603603345 · Twitter Post
• https://vuldb.com/?submit.755227 · Note