Zoom is widely used across enterprises; an RCE via meeting participant can compromise many endpoints and is broadly newsworthy and impactful.
CVE-2026-53413
Zoom client annotator bounds check flaw allows remote code execution via meeting.
Is CVE-2026-53413 being exploited?
Not confirmed. CVE-2026-53413 does not appear in CISA's Known Exploited Vulnerabilities catalog, which records only exploitation that has been observed and reported publicly. That is evidence of absence of a report, not evidence the flaw is unattacked. EPSS currently estimates a 5.6% probability of exploitation in the next 30 days.
How severe is CVE-2026-53413?
CVE-2026-53413 is rated High with a CVSS score of 8.3. Severity describes how bad exploitation would be, not how likely it is: pair it with exploitation evidence before deciding what to patch first.
Is there a patch for CVE-2026-53413?
Yes. A fix has been recorded for CVE-2026-53413. The vendor advisory is the authority on the exact fixed version — apply it from there rather than from a summary.
What does CVE-2026-53413 affect?
CVE-2026-53413 affects Zoom Client (Windows, macOS, Linux, iOS, Android). Confirm the exact affected versions against the vendor advisory before deciding you are exposed.
What should I do about CVE-2026-53413?
Apply vendor patch when released; update clients; restrict meeting/annotation privileges.
Exploitation status reflects CISA's KEV catalog as we last synced it. Check the catalog directly.
Remote code execution against meeting participants via network-delivered buffer overwrite; attacker can run arbitrary code as the user.
Immediate action required
- affectedsee references
As published in the CVE Program record. A version outside these ranges is not a statement that it is unaffected — vendors sometimes understate a range, and distribution-backported builds carry upstream numbers that do not reflect what was patched into them.