What is CVE-2025-0539?

CVE-2025-0539 is a high-severity vulnerability in Microsoft Windows, classified under Server-Side Request Forgery (SSRF). CVSS score: 8.8/10. Published 2025-04-10.

How severe is CVE-2025-0539?

High severity. CVSS v3 base score is 8.8 out of 10.

SSRF in Microsoft Windows

CVE-2025-0539

In affected Microsoft Windows versions of Octopus Deploy, the server can be coerced into sending server-side requests that contain authentication material allowing a suitably positioned attacker to compromise the account running Octopus Se…

Vulnerability class: SSRF (Server-Side Request Forgery)

EPSS: 0.003 (21.7th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 8.8 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H.

Affected products

Microsoft Windows
Octopus Octopus_server
Octopus Deploy Server — versions 2.6.0, 2024.4.401

Weakness classification (CWE)

CWE-918 — Server-Side Request Forgery (SSRF)

References

security@octopus.com (Vendor Advisory)

Frequently asked questions

What is CVE-2025-0539?: CVE-2025-0539 is a high-severity vulnerability in Microsoft Windows, classified under Server-Side Request Forgery (SSRF). CVSS score: 8.8/10. Published 2025-04-10.
How severe is CVE-2025-0539?: High severity. CVSS v3 base score is 8.8 out of 10.