Vulnerability · Published Sep 14, 2026 · Assigned by VulnCheck

CVE-2026-7208Yealink SIP-T33G < 124.87.0.0 Race Condition via Diagnostic File Deletion

Medium 5.3

In plain English

A medium-severity race condition in SIP-T33G from Yealink. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.3% (higher than 28% of all known vulnerabilities).

Severity (CVSS 3.1)5.3Medium

Exploit odds (30 days)0.3%top 71.6% of all CVEs

Exploited in the wildNo reportsCISA SSVC: none

Attack toolingNoneno public tooling known

Official description

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 (as reported)

Vendor	Product	Versions
Yealink	SIP-T33G	124.86.0.0 – before 124.87.0.0

Weakness: CWE-362 · Vector: CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H

References

Vendor Advisory vendor-advisory, patch
Product Webpage product
https://www.vulncheck.com/advisories/yealink-sip-t33g-race-condition-via-diagnostic-file-deletion third-party-advisory