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CVE-2026-82539criticalCWE-119

TOTOLINK A720R MAC Filtering cstecgi.cgi setMacFilterRules memory corruption

48Vexday Risk Score

No sign of exploitation. It has a public proof of concept.

ssvc Attendcvss 9.4epss 0.6%
exploitation probability
0.6%top 53% of all CVEs
observed exploitation
nono source reports it
1 public exploit(s)
A vulnerability was determined in TOTOLINK A720R 4.1.5cu.630_B20250509. This impacts the function setMacFilterRules of the file cstecgi.cgi of the component MAC Filtering. Executing a manipulation of the argument desc can lead to memory corruption. The attack may be launched remotely. The exploit has been publicly disclosed and may be utilized.
CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:N/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H/E:P
Affected products
TOTOLINK · A720R
⚠ Public resources, to assess the exposure of systems you control or are authorized to test. Test only with authorization.