What’s Vulnerable › Vulnerabilities

CVE-2025-25234

• Severity: high (CVSS 7.5 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.3% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2025-04-17 · updated 2026-06-17
• Weakness: CWE-942

Description

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.

Affected products

• Omnissa Unified Access Gateway (UAG): before 2503 — fixed in 2503

How to fix

Upgrade to a fixed version: Omnissa Unified Access Gateway (UAG) 2503. Check the vendor advisory for mitigations.

References

• https://static.omnissa.com/sites/default/files/OMSA-2025-0002.pdf
• https://www.omnissa.com/omnissa-security-response/

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