High severity · published Mar 11, 2025
CVE-2025-27439
Zoom Apps - Buffer Underflow
8.8
CVSS
0.4%
EPSS
No
On KEV
Description
Buffer underflow in some Zoom Workplace Apps may allow an authenticated user to conduct an escalation of privilege via network access.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Attack vector
Network
Complexity
Low
Privileges
Low
User interaction
None
Confidentiality
High
Integrity
High
Availability
High
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.4% · higher than 38% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
ZW
Zoom Workplace Apps · Zoom Communications, Inc
See references. · source: vendor
MS
Meeting Software Development Kit · Zoom
before 6.3.0; before 6.3.0; before 6.3.0; before 6.3.0; before 6.3.0 · source: NVD
RO
Rooms · Zoom
before 6.3.0; before 6.3.0; before 6.3.0; before 6.3.0 · source: NVD
RC
Rooms Controller · Zoom
before 6.3.0; before 6.3.0; before 6.3.0; before 6.3.0 · source: NVD
WO
Workplace · Zoom
before 6.3.0; before 6.3.0 · source: NVD
WD
Workplace Desktop · Zoom
before 6.3.0; before 6.3.0; before 6.3.0 · source: NVD
WV
Workplace Virtual Desktop Infrastructure · Zoom
before 6.1.16; 6.1.17 before 6.2.12 · source: NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2025-27439
CVE.org
https://www.cve.org/CVERecord?id=CVE-2025-27439
Vendor Advisory
https://www.zoom.com/en/trust/security-bulletin/zsb-25011/
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