What is CVE-2026-53413?

CVE-2026-53413 is a high-severity vulnerability in Zoom Communications Clients, classified under Out-of-bounds Write. CVSS score: 8.3/10. Published 2026-08-11.

How severe is CVE-2026-53413?

High severity. CVSS v3 base score is 8.3 out of 10.

Buffer overflow in Zoom Communications Clients

CVE-2026-53413

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.

Vulnerability class: Buffer Overflow

CVSS v3 metric

CVSS v3 base score 8.3 (High). Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:C/C:H/I:H/A:H.

Affected products

Zoom Communications Clients — versions see references

Weakness classification (CWE)

CWE-787 — Out-of-bounds Write

References

security@zoom.us

Frequently asked questions

What is CVE-2026-53413?: CVE-2026-53413 is a high-severity vulnerability in Zoom Communications Clients, classified under Out-of-bounds Write. CVSS score: 8.3/10. Published 2026-08-11.
How severe is CVE-2026-53413?: High severity. CVSS v3 base score is 8.3 out of 10.