EUVD-2025-21022
Classic Buffer Overflow (CWE-120)
2025-07-10
security@zoom.us
6.5
CVSS 3.1 · NVD
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NVD
PRIMARY
6.5
MEDIUM
AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Primary rating from NVD · only source for this CVE.
CVSS VectorNVD
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Attack Vector
Network
Attack Complexity
Low
Privileges Required
Low
User Interaction
None
Scope
Unchanged
Confidentiality
None
Integrity
None
Availability
High
Lifecycle Timeline
4
Patch available
Apr 16, 2026 - 05:29 EUVD
6.4.5
EUVD ID Assigned
Mar 16, 2026 - 06:52 euvd
EUVD-2025-21022
Analysis Generated
Mar 16, 2026 - 06:52 vuln.today
CVE Published
Jul 10, 2025 - 17:15 nvd
MEDIUM 6.5
DescriptionCVE.org
Classic buffer overflow in certain Zoom Clients for Windows may allow an authorised user to conduct a denial of service via network access.
Analysis
Classic buffer overflow in certain Zoom Clients for Windows may allow an authorised user to conduct a denial of service via network access.
Technical ContextAI
A buffer overflow occurs when data written to a buffer exceeds its allocated size, potentially overwriting adjacent memory and corrupting program state. This vulnerability is classified as Classic Buffer Overflow (CWE-120).
RemediationAI
Use memory-safe languages or bounds-checked functions. Enable ASLR, DEP/NX, and stack canaries. Apply vendor patches promptly.
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