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Fencer Vulns
high 8.5

CVE-2025-27439 json

Zoom Apps - Buffer Underflow

published 2025-03-11 19 mo ago modified 2026-06-17 4 mo ago also EUVD-2025-7782

cvss
8.5
version 3.1, CNA
cisa kev
Not listed
not in CISA's catalog
epss
0.4%
EPSS 0.4% chance of exploitation in 30 days, percentile 38%
public exploits
0
none known

Summary

Buffer underflow in some Zoom Workplace Apps may allow an authenticated user to conduct an escalation of privilege via network access.

Patch / fix

  • zoom meeting_software_development_kit 6.3.0
  • zoom rooms 6.3.0
  • zoom rooms_controller 6.3.0
  • zoom workplace 6.3.0
  • zoom workplace_desktop 6.3.0
  • zoom workplace_virtual_desktop_infrastructure 6.1.16, 6.2.12

CISA SSVC

Exploitation
none
Automatable
no
Technical impact
total
Assessed
19 mo ago

Exploit prediction

0.44% chance of exploitation in the next 30 days, higher than 38% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by version score vector
CNA 3.1 8.5 CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:C/C:H/I:H/A:H
NVD 3.1 8.8 CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Affected products

  • Zoom Communications, Inc Zoom Workplace Apps

Classification

Weakness

References

Sources

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.