How severe is CVE-2025-0526?

CVE-2025-0526 has a CVSS 3.x base score of 5.4, rated medium severity. It is exploitable over network with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is none, integrity low, and availability low.

Is CVE-2025-0526 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (24th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2025-0526?

CVE-2025-0526 affects Octopus Octopus Server. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2025-0526?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.

Does CVE-2025-0526 have an EU (EUVD) identifier?

Yes. CVE-2025-0526 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2025-1735.

When was CVE-2025-0526 published?

CVE-2025-0526 was published on 2025-02-11 and last updated on 2026-06-17.

CVE-2025-0526

CVE-2025-0526 is a medium-severity vulnerability in Octopus Octopus Server with a CVSS 3.x base score of 5.4. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-862.

Key facts

Severity: Medium (CVSS 3.x base score 5.4)
CVSS v4: 2.3
EPSS exploit prediction: 0% (24th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2025-1735
Weakness: CWE-862
Affected product: Octopus Octopus Server
Published: 2025-02-11
Last modified: 2026-06-17

Description

In affected versions of Octopus Deploy it was possible to upload files to unexpected locations on the host using an API endpoint. The field lacked validation which could potentially result in ways to circumvent expected workflows.

Frequently asked questions

What is CVE-2025-0526?: In affected versions of Octopus Deploy it was possible to upload files to unexpected locations on the host using an API endpoint. The field lacked validation which could potentially result in ways to circumvent expected workflows.
How severe is CVE-2025-0526?: CVE-2025-0526 has a CVSS 3.x base score of 5.4, rated medium severity. It is exploitable over network with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is none, integrity low, and availability low.
Is CVE-2025-0526 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (24th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2025-0526?: CVE-2025-0526 affects Octopus Octopus Server. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2025-0526?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
Does CVE-2025-0526 have an EU (EUVD) identifier?: Yes. CVE-2025-0526 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2025-1735.
When was CVE-2025-0526 published?: CVE-2025-0526 was published on 2025-02-11 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:octopus:octopus_server:*:*:*:*:*:*:*:*

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