PT-2026-43188 · Totolink · Ca750-Poe

Buoy_Yes · Published 2026-05-26 · Updated 2026-05-26 · CVE-2026-9531

Positive Technologies (AI Summary)

CVSS v2.0

6.5

Medium

Base vector

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

Name of the Vulnerable Software and Affected Versions Totolink CA750-PoE version 6.2c.510

Description A weakness in the Setting Handler component allows remote OS command injection. The issue exists within the setUpgradeUboot() function of the '/cgi-bin/cstecgi.cgi' endpoint, where improper manipulation of the FileName argument enables the execution of arbitrary operating system commands. This flaw is being actively exploited in real-world attacks to gain unauthorized access and potentially achieve full system compromise.

Recommendations Update Totolink CA750-PoE version 6.2c.510 to the latest patched version. As a temporary workaround, restrict access to the '/cgi-bin/cstecgi.cgi' endpoint to minimize the risk of exploitation.

Exploit

Fix

OS Command Injection

Command Injection

Weakness Enumeration

CWE-78

CWE-77

Related Identifiers

CVE-2026-9531

Affected Products

Ca750-Poe

References · 8

• 🔥 https://github.com/wudipjq/my_vuln/blob/main/totolink4/vuln_54/54.md · Exploit
• 🔥 https://vuldb.com/submit/813929 · Exploit
• https://nvd.nist.gov/vuln/detail/CVE-2026-9531 · Security Note
• https://twitter.com/NewsNerdie/status/2059334366161961400 · Twitter Post
• https://totolink.net · Note
• https://vuldb.com/vuln/365558/cti · Note
• https://t.me/CVEtracker/54954 · Telegram Post
• https://vuldb.com/vuln/365558 · Note