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Vulnerabilities

Vulnerability · CVE-2025-46789

Classic buffer overflow in certain Zoom Clients for Windows may allow an authorized user to conduct a denial of service via network access.

Published Jul 10, 2025 · catalog updated Jul 10, 2025 · Zoom Communications Inc. Zoom Clients for Windows

Check this week

CVE-2025-46789 is not in CISA KEV. FIRST estimates a 55.00% chance of exploitation in the next 30 days. Check whether you run Zoom Communications Inc. Zoom Clients for Windows.

Gaps on this record

  • No vendor fix or required action is stored. Compare the linked advisory before you change production.
Severity
Medium6.5
Known exploitation
Not in CISA/VulnCheck KEV
EPSS
55.00%
Remediation
Version ranges on file
Affected products
vendor Zoom Communications Inc. Zoom Clients for Windows 0 <see references

Classic buffer overflow in certain Zoom Clients for Windows may allow an authorized user to conduct a denial of service via network access.

Are you affected?

Enter the version you run. The result uses only the ranges stored on this record.

The check returns affected, not affected, or incomplete. It does not guess a version that is missing from the record.

  • vendor Zoom Communications Inc. Zoom Clients for Windows 0 <see references0 <see references

How to fix CVE-2025-46789

  • Recommended remediation

    Affected version ranges suggest a fixed boundary. Verify against the vendor advisory for your release.

  • Official advisories

What to do

Three questions, each answered from this record only. Confirm the vendor advisory before you patch.

Should you patch?

CVE-2025-46789 is not in CISA KEV. FIRST estimates a 55.00% chance of exploitation in the next 30 days. Check whether you run Zoom Communications Inc. Zoom Clients for Windows.

Which versions are affected?

Compare what you have installed with Zoom Communications Inc. Zoom Clients for Windows 0 <see references 0 <see references. Compare the installed version with the linked vendor advisory before you change production.

What should an analyst verify?

No weakness class is stored. EPSS 55.00%. There is no CISA KEV listing. No Exploit-DB or Metasploit reference is linked. Use the source links for the original advisory.

Technology hubs

Windows security

Code

The project this record applies to. Exploit listings stay in References.

No public source repository is identified for this product.

Timeline

Detection, updates, and resolution for this record.

  1. Jul 10, 2025 · EUVD

    Detected

    Classic buffer overflow in certain Zoom Clients for Windows may allow an authorized user to conduct a denial of service via network access.

  2. Jul 10, 2025 · EUVD

    Updated

    Classic buffer overflow in certain Zoom Clients for Windows may allow an authorized user to conduct a denial of service via network access.

Sources

  • EUVDVulnerability recordEUVD-2025-21011

    Classic buffer overflow in certain Zoom Clients for Windows may allow an authorized user to conduct a denial of service via network access.

    euvd.enisa.europa.eu

References

Freshness

Last verified in this catalog Jul 10, 2025. Significant claims (KEV, EPSS, CVSS, affected ranges) come from the source rows above — open the original publisher for the authoritative advisory.