CVE-2026-53420CWE-120

CVE-2026-53420

High · published October 13, 2026

CVSS v3.1
8.0
EPSS
0%
Percentile
15.7
In the wild
Unconfirmed
What it is

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.

The record
Technical detail
CVSS v3.1
8.0 · HIGH
Vector
CVSS:3.1/AV:N/AC:H/PR:L/UI:R/S:C/C:H/I:H/A:H
CVSS v4.0
Not supplied
EPSS
0.00252 · 15.7th percentile
Weakness
CWE-120 · Buffer Copy without Checking Size of Input ('Classic Buffer Overflow')
Published
2026-10-13T19:17Z
References (1)
https://www.zoom.com/en/trust/security-bulletin/zsb-26020 · [email protected]
EPSS history
Timeline
  • 15 OCT 03:32Z
    EPSS moved — → 0%
    epss
  • 13 OCT 14:22Z
    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
    cvelistv5
  • 13 OCT 14:22Z
    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
    cvelistv5