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Vulnerabilities

Vulnerability · CVE-2025-25234

Omnissa UAG contains a Cross-Origin Resource Sharing (CORS) bypass vulnerability.

Published Apr 17, 2025 · catalog updated Apr 17, 2025 · Omnissa Omnissa Unified Access Gateway (UAG)

Check this week

CVE-2025-25234 is not in CISA KEV. FIRST estimates a 29.00% chance of exploitation in the next 30 days. Check whether you run Omnissa Omnissa Unified Access Gateway (UAG).

Gaps on this record

  • No version range is stored. A customer cannot check an installed version against this record.
  • No vendor fix or required action is stored. Compare the linked advisory before you change production.
Severity
High7.1
Known exploitation
Not in CISA/VulnCheck KEV
EPSS
29.00%
Remediation
Advisory link
Affected products
vendor Omnissa Omnissa Unified Access Gateway (UAG) Omnissa Unified Access Gateway 2412 or earlier

Omnissa UAG contains a Cross-Origin Resource Sharing (CORS) bypass vulnerability. A malicious actor with network access to UAG may be able to bypass administrator-configured CORS restrictions to gain access to sensitive networks.

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 Omnissa Omnissa Unified Access Gateway (UAG) Omnissa Unified Access Gateway 2412 or earlierOmnissa Unified Access Gateway 2412 or earlier

How to fix CVE-2025-25234

What to do

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

Should you patch?

CVE-2025-25234 is not in CISA KEV. FIRST estimates a 29.00% chance of exploitation in the next 30 days. Check whether you run Omnissa Omnissa Unified Access Gateway (UAG).

Which versions are affected?

Compare what you have installed with Omnissa Omnissa Unified Access Gateway (UAG) Omnissa Unified Access Gateway 2412 or earlier Omnissa Unified Access Gateway 2412 or earlier. Compare the installed version with the linked vendor advisory before you change production.

What should an analyst verify?

No weakness class is stored. EPSS 29.00%. There is no CISA KEV listing. No Exploit-DB or Metasploit reference is linked. Use the source links for the original advisory.

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. Apr 17, 2025 · EUVD

    Detected

    Omnissa UAG contains a Cross-Origin Resource Sharing (CORS) bypass vulnerability. A malicious actor with network access to UAG may be able to bypass administrator-configured CORS restrictions to gain access to sensitive networks.

  2. Apr 17, 2025 · EUVD

    Updated

    Omnissa UAG contains a Cross-Origin Resource Sharing (CORS) bypass vulnerability. A malicious actor with network access to UAG may be able to bypass administrator-configured CORS restrictions to gain access to sensitive networks.

Sources

  • CVE.orgVulnerability recordCVE-2025-25234

    Official CVE identifier

    cve.org
  • EUVDVulnerability recordEUVD-2025-11481

    Omnissa UAG contains a Cross-Origin Resource Sharing (CORS) bypass vulnerability. A malicious actor with network access to UAG may be able to bypass administrator-configured CORS restrictions to gain access to sensitive networks.

    euvd.enisa.europa.eu

References

Freshness

Last verified in this catalog Oct 18, 2026. Significant claims (KEV, EPSS, CVSS, affected ranges) come from the source rows above — open the original publisher for the authoritative advisory.