CVE-2026-82539

CRITICAL 9.1CVE-2026-82539 · Published 30/08/2026 · updated 01/09/2026

In short

CVE-2026-82539 is a CRITICAL (CVSS 9.1) vulnerability.
Chance of exploitation in the next 30 days (EPSS): 0.83%, higher than 57.7% of all vulnerabilities.
No patched version is listed yet: follow the vendor's advisory in References.

Package	Affected versions	Patched versions
—	No affected product versions are listed for this vulnerability yet.

Description

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.

References

Xernary/CVE-2026-82539
vuldb.com/cve/CVE-2026-82539
vuldb.com/submit/888696
vuldb.com/vuln/397055
vuldb.com/vuln/397055/cti
totolink.net

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