Home/CVE/Zoom for Windows clients prior to 5.13.5 contain an improper verification of cryptographic signature vulnerability. A m
CVE

CVE-2023-28602

Zoom for Windows clients prior to 5.13.5 contain an improper verification of cryptographic signature vulnerability. A m

Zoom for Windows clients prior to 5.13.5 contain an improper verification of cryptographic signature vulnerability. A malicious user may potentially downgrade Zoom Client components to previous versions.

LOW · CVSS 2.8 EPSS 0.00104
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  • No active-exploitation, high-EPSS, or public-exploit signals - routine patching cadence
Sigma rules0 YARA rules0
⬡

Weakness Classification

CWE-347Improper Verification of Cryptographic Signature
CWE-347Improper Verification of Cryptographic Signature
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Affected Products & Versions

1
zoom< 5.13.5
▣

Scoring & Timeline

2.8
LOW · CVSS v3.1 · security@zoom.us
View on NVD
Attack Vector
Network Adjacent Local Physical
Attack Complexity
Low High
Privileges Required
None Low High
User Interaction
None Required
Scope
Unchanged Changed
Confidentiality
None Low High
Integrity
None Low High
Availability
None Low High
Published to NVD13 Jun 2023 · 06:15 PM
CVSS VectorCVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:C/C:N/I:L/A:N
SSVC triage · cisa-vulnrichment
Exploitation
none
Automatable
no
Technical impact
partial
SSVC asks the questions that actually drive patch urgency: is it being exploited, can attacks be automated, and how total is the impact.
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References & Sources

1
Source URLs (vendor pages, mailing lists, write-ups). Exploit/PoC links are in their own section above to avoid duplication.
https://explore.zoom.us/en/trust/security/security-bulletin/Vendor Advisory
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