Stack-based buffer overflow in TOTOLINK T10 cstecgi.cgi loginAuthUrl handling
A stack-based buffer overflow vulnerability in TOTOLINK T10 firmware 4.1.8cu.5083_B20200521 exists in /cgi-bin/cstecgi.cgi, where the sprintf() call copies attacker-controlled data derived from the loginAuthUrl argument into a fixed-size stack buffer without adequate bounds checking. A remote attacker can trigger the overflow by supplying a crafted loginAuthUrl value, resulting in memory corruption and potential control of execution flow.
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Impact, mitigation & remediation
What it means. What to do now. Patch path, mitigations, and the assume-compromise checklist.
Impact
What an attacker gets, and what they’ve been doing with it.
Mitigation
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Remediation
Patch, then assume compromise.
Exploits
No public exploits tracked yet. Mallory keeps watching.
No public exploit code observed for this vulnerability.
Affected products & vendors
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Vendor-confirmed product mapping. Mallory continuously reconciles this list against your asset inventory.
Recent activity
9 sources tracked across advisories, community write-ups, and news. New activity surfaces here as Mallory finds it.
The version that knows your environment.
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.