Vulnerability · Published Aug 11, 2026 · Assigned by Zoom
CVE-2026-53413Zoom Clients - Buffer Over-write
High 8.3
In plain English
A high-severity out-of-bounds write in Zoom Clients from Zoom Communications. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.5% (higher than 43% of all known vulnerabilities). Ready-made attack tooling exists: public proof-of-concept code.
Severity (CVSS 3.1)8.3High
Exploit odds (30 days)0.5%top 57.4% of all CVEs
Exploited in the wildNo reportsCISA SSVC: none
Attack tooling1Public PoC
Official description
Missing bounds check in the annotator function of Zoom Clients allows buffer over-write, which may allow a meeting participant to achieve remote code execution of another participant via network access.
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| Zoom Communications | Zoom Clients | see references |
Weakness: CWE-787 · Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:C/C:H/I:H/A:H