PT-2026-30700 · Totolink · Totolink A8000Ru

Skeet · Published 2026-04-06 · Updated 2026-04-28 · CVE-2026-5676

Positive Technologies (AI Summary)

CVSS v2.0

7.5

High

Base vector

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

Name of the Vulnerable Software and Affected Versions Totolink A8000R version 5.9c.681 B20180413

Description A flaw exists in the setLanguageCfg function within the /cgi-bin/cstecgi.cgi file of Totolink A8000R version 5.9c.681 B20180413. Manipulation of the langType argument bypasses authentication, allowing for remote attacks. The exploit is publicly available.

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

Exploit

Fix

Missing Authentication

Improper Authentication

Weakness Enumeration

CWE-306

CWE-287

Related Identifiers

CVE-2026-5676

Affected Products

Totolink A8000Ru

References · 8

• 🔥 https://github.com/skeetabc/CVE-TOTOLINK-A800R/blob/main/vuln1_auth_bypass.md · Exploit
• https://nvd.nist.gov/vuln/detail/CVE-2026-5676 · Security Note
• https://twitter.com/VulmonFeeds/status/2041325139283841123 · Twitter Post
• https://totolink.net · Note
• https://vuldb.com/vuln/355503/cti · Note
• https://vuldb.com/vuln/355503 · Note
• https://twitter.com/giuseppe_1337/status/2048969754338111506 · Twitter Post
• https://vuldb.com/submit/792433 · Note