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CVE-2026-44089 is a stack-based buffer overflow vulnerability affecting the Totolink EX1200L router. The flaw is present in the login functionality exposed through the cgi-bin/cstecgi.cgi endpoint. A crafted request to this login handler can trigger memory corruption, causing the process to crash and potentially enabling remote code execution. The issue has been confirmed in firmware version 9.3.5u.6146_B20201023; other versions may also be affected, but that has not been confirmed in the provided content.
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6 sources tracked across advisories, community write-ups, and news. New activity surfaces here as Mallory finds it.
A stack-based buffer overflow vulnerability affecting Totolink EX1200L router software.
A critical buffer overflow vulnerability in the Totolink EX1200L router login functionality that can lead to remote code execution with root privileges.
A stack-based buffer overflow in the login functionality of the Totolink EX1200L router's cgi-bin/cstecgi.cgi endpoint that may allow unauthenticated remote code execution as root.
Query your assets running an affected version, and investigate the blast radius.
Every observed campaign linking this CVE to a named adversary.
Malware families riding this exploit, with evidence and IOCs.
YARA, Sigma, Snort, and vendor rules, auto-deployed to your SIEM.
Cross-references every affected SKU, including bundled OEM variants.
Community discussion across Reddit, Mastodon, and other social sources.