CVE-2026-53420 Memory corruption in Zoom Workplace
An unauthenticated attacker can exploit a buffer overflow in Zoom Workplace to escalate privileges via network access.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Over the internet
- Victim action needed
- A user has to click or open something
- Fix
- None listed
What is CVE-2026-53420?
CVE-2026-53420 is a high-severity memory corruption vulnerability in Zoom Workplace, published on 13 Oct 2026. Any signed-in user can exploit it over the network, and only if a user opens a file or follows a link.
Official description
Buffer overflow in a Zoom Phone feature of Zoom Workplace Clients may allow an unauthenticated user to conduct a escalation of privilege via network access.
Weakness: CWE-120
Which versions are affected by CVE-2026-53420?
How do I fix CVE-2026-53420?
No fix has been published for CVE-2026-53420 yet. Limit exposure of the affected software until one is available.
Upgrade to the fixed version. Memory-safe languages, compiler hardening and fuzzing prevent most new cases. More about Memory corruption.
Is CVE-2026-53420 being exploited?
There is no known exploitation of CVE-2026-53420 in the wild and no public exploit code.
Sources
Also known as GHSA-v64v-vg73-53qc.