A security flaw has been discovered in TOTOLINK EX200 5.2.3c.7200
TOTOLINK · EX200
A stack-based buffer overflow exists in the setStaticDhcpConfig function of /cgi-bin/cstecgi.cgi, part of the lan.so component in TOTOLINK EX200 firmware 5.2.3c.7200, triggered by improperly bounded input to the Comment argument. An attacker can exploit it remotely, without authentication or user interaction, by sending a crafted request to the device's web interface.
A security flaw has been discovered in TOTOLINK EX200 5.2.3c.7200. This affects the function setStaticDhcpConfig of the file /cgi-bin/cstecgi.cgi of the component lan.so. The manipulation of the argument Comment results in stack-based buffer overflow. It is possible to launch the attack remotely. The exploit has been released to the public and may be used for attacks.
- Exploited
- Not confirmed
- Reports
- 0
- Tactics
- 0/15
Exploitation timelineDated milestones for a CVE: when it was disclosed, when exploit code became public, when exploitation was confirmed, and when threat reports named it.
Disclosed on 21 Oct 2026. No public exploit code or confirmed exploitation is recorded.
MITRE ATT&CKA public catalogue of the techniques attackers use, maintained by MITRE. Patchfirst uses it to describe what attackers do with a vulnerability. techniques
No techniques linkedNo ATT&CK techniques are linked to this CVE yet. MITRE CTID has not mapped it, and no report passage in the corpus ties it to a technique.
What security researchers reported
Not named in any threat report yetAlso mentioned in 6 community threat pulses (AlienVault OTX)
Weaker evidencePulses are indicator collections that anyone can publish. A mention is not confirmation of exploitation.
- Known_Cve | Oct 30, 2026 | Part 1/229 Oct 2026
- Known_Cve | Oct 29, 2026 | Part 2/328 Oct 2026
- Known_Cve | Oct 28, 2026 | Part 2/327 Oct 2026
- Known_Cve | Oct 27, 2026 | Part 2/326 Oct 2026
- Known_Cve | Oct 24, 2026 | Part 3/323 Oct 2026
- Known_Cve | Oct 23, 2026 | Part 3/322 Oct 2026