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CVE-2025-65606 is a vulnerability in the TOTOLINK EX200 wireless range extender’s firmware-upload handler/error-handling logic. By uploading a specially crafted malformed firmware file via the device’s web management interface, an authenticated attacker can force the device into an abnormal error state that starts a Telnet service (TCP/23) running as root without authentication. This Telnet service is normally disabled and not intended to be exposed, and once started it provides root shell access, enabling full device control (e.g., configuration changes and arbitrary command execution). The product is end-of-life and no vendor patch is available per CERT/CC (VU#295169).
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What an attacker gets, and what they’ve been doing with it.
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No public exploit code observed for this vulnerability.
Products and vendors Mallory has correlated with this vulnerability. Open in Mallory to drill down to specific CPE configurations and version ranges.
Vendor-confirmed product mapping. Mallory continuously reconciles this list against your asset inventory.
18 sources tracked across advisories, community write-ups, and news. New activity surfaces here as Mallory finds it.
Unpatched TOTOLINK EX200 firmware flaw enabling full device takeover (remote authenticated).
Unpatched firmware flaw in TOTOLINK EX200 related to firmware-upload error handling that could enable full remote device takeover (remote authenticated attacker).
A critical privilege escalation and remote code execution vulnerability in TOTOLINK EX200 firmware that allows an authenticated attacker to trigger an unauthenticated root telnet service, granting full device control. No patch is available as the device is end-of-life.
A vulnerability in the TOTOLINK EX200 device allows unauthorized access to a root Telnet interface, potentially enabling attackers to gain full control of the device.
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.