How severe is CVE-2025-59339?

CVE-2025-59339 has a CVSS 3.x base score of 4.4, rated medium severity. It is exploitable over local access with low attack complexity, requires high privileges and no user interaction. Impact on confidentiality is none, integrity high, and availability none.

Is CVE-2025-59339 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (1st percentile), an estimate of the probability of exploitation in the next 30 days.

How do I fix CVE-2025-59339?

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

Does CVE-2025-59339 have an EU (EUVD) identifier?

Yes. CVE-2025-59339 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2025-29748.

When was CVE-2025-59339 published?

CVE-2025-59339 was published on 2025-09-17 and last updated on 2026-06-17.

CVE-2025-59339

CVE-2025-59339 is a medium-severity vulnerability with a CVSS 3.x base score of 4.4. 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-325.

Key facts

Severity: Medium (CVSS 3.x base score 4.4)
EPSS exploit prediction: 0% (1st percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2025-29748
Weakness: CWE-325
Published: 2025-09-17
Last modified: 2026-06-17

Description

The Bastion provides authentication, authorization, traceability and auditability for SSH accesses. Session-recording ttyrec files, may be handled by the provided osh-encrypt-rsync script that is a helper to rotate, encrypt, sign, copy, and optionally move them to a remote storage periodically, if configured to. When running, the script properly rotates and encrypts the files using the provided GPG key(s), but silently fails to sign them, even if asked to.

Frequently asked questions

What is CVE-2025-59339?: The Bastion provides authentication, authorization, traceability and auditability for SSH accesses. Session-recording ttyrec files, may be handled by the provided osh-encrypt-rsync script that is a helper to rotate, encrypt, sign, copy, and optionally move them to a remote storage periodically, if configured to. When running, the script properly rotates and encrypts the files using the provided GPG key(s), but silently fails to sign them, even if asked to.
How severe is CVE-2025-59339?: CVE-2025-59339 has a CVSS 3.x base score of 4.4, rated medium severity. It is exploitable over local access with low attack complexity, requires high privileges and no user interaction. Impact on confidentiality is none, integrity high, and availability none.
Is CVE-2025-59339 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (1st percentile), an estimate of the probability of exploitation in the next 30 days.
How do I fix CVE-2025-59339?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
Does CVE-2025-59339 have an EU (EUVD) identifier?: Yes. CVE-2025-59339 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2025-29748.
When was CVE-2025-59339 published?: CVE-2025-59339 was published on 2025-09-17 and last updated on 2026-06-17.

References

Other CWE-325 vulnerabilities

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CVE-2025-60704 — High (CVSS 7.5): Missing cryptographic step in Windows Kerberos allows an unauthorized attacker to elevate privileges over a network.

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