PT-2026-21292 · Tenda · Tenda Ac18

942384053 · Published 2026-02-20 · Updated 2026-02-22 · CVE-2026-2877

Positive Technologies (AI Summary)

CVSS v2.0

9.0

High

Base vector

AV:N/AC:L/Au:S/C:C/I:C/A:C

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

Description A flaw exists in the Tenda A18 router, specifically in the handling of the strcpy function within the /goform/WifiExtraSet API endpoint of the Httpd Service. Manipulation of the wpapsk crypto5g argument can lead to a stack-based buffer overflow. The issue is remotely exploitable, and the exploit has been publicly disclosed.

Recommendations Update to a newer version that contains a fix for this vulnerability. As a temporary workaround, consider restricting access to the /goform/WifiExtraSet endpoint to minimize the risk of exploitation.

Exploit

Fix

RCE

Buffer Overflow

Stack Overflow

Weakness Enumeration

CWE-119

CWE-121

Related Identifiers

CVE-2026-2877

Affected Products

Tenda Ac18

References · 14

• 🔥 https://github.com/master-abc/cve/issues/39 · Exploit
• https://nvd.nist.gov/vuln/detail/CVE-2026-2877 · Security Note
• https://osv.dev/vulnerability/CVE-2026-2877 · Vendor Advisory
• https://twitter.com/CveTodo/status/2025291496287609133 · Twitter Post
• https://vuldb.com/?ctiid.347130 · Note
• https://vuldb.com/?submit.754703 · Note
• https://vuldb.com/?id.347130 · Note
• https://t.me/cveNotify/152731 · Telegram Post
• https://t.me/CVEtracker/45390 · Telegram Post
• https://twitter.com/CVEnew/status/2025425459811615149 · Twitter Post
• https://twitter.com/CveFindCom/status/2025287102246625313 · Twitter Post
• https://twitter.com/VulmonFeeds/status/2025293306750542015 · Twitter Post
• https://tenda.com.cn · Note
• https://twitter.com/vuldb/status/2024887163104755858 · Twitter Post