CVE-2026-7208: Yealink SIP-t33g

Medium severity, CVSS 5.3. EPSS: 0.3% chance of exploitation in the next 30 days.

Yealink SIP-T33G firmware versions 124.86.x.x prior to 124.87.0.0 contain a race condition vulnerability that allows authenticated attackers to interrupt active diagnostic processes by concurrently deleting output files written to predictable paths under the diagnostic directory. Attackers can trigger a diagnostic operation such as traceroute or ping and simultaneously invoke the file deletion endpoint to terminate the running process, leaving the system in an inconsistent state.

Affected products

• Yealink SIP-t33g: from 124.86.0.0, before 124.87.0.0 (fixed in 124.87.0.0)

Published 2026-09-14. Last modified 2026-09-24.