How severe is CVE-2025-15579?

CVE-2025-15579 has a CVSS 4.0 base score of 9.5, rated critical severity.

Is CVE-2025-15579 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (25th percentile), an estimate of the probability of exploitation in the next 30 days.

How do I fix CVE-2025-15579?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.

Does CVE-2025-15579 have an EU (EUVD) identifier?

Yes. CVE-2025-15579 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2025-207782.

When was CVE-2025-15579 published?

CVE-2025-15579 was published on 2026-02-18 and last updated on 2026-06-17.

CVE-2025-15579

CVE-2025-15579 is a critical-severity vulnerability with a CVSS 4.0 base score of 9.5. 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-502.

Key facts

Severity: Critical (CVSS 4.0 base score 9.5)
EPSS exploit prediction: 0% (25th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2025-207782
Weakness: CWE-502
Published: 2026-02-18
Last modified: 2026-06-17

Description

Deserialization of Untrusted Data vulnerability in OpenText™ Directory Services allows Object Injection. The vulnerability could lead to remote code execution, denial of service, or privilege escalation. This issue affects Directory Services: before 24.4.16, from 25.1 before 25.1.9, from 25.2 before 25.2.9, from 25.3 before 25.3.8, from 25.4 before 25.4.5, from 26.1 before 26.1.2.

Frequently asked questions

What is CVE-2025-15579?: Deserialization of Untrusted Data vulnerability in OpenText™ Directory Services allows Object Injection. The vulnerability could lead to remote code execution, denial of service, or privilege escalation. This issue affects Directory Services: before 24.4.16, from 25.1 before 25.1.9, from 25.2 before 25.2.9, from 25.3 before 25.3.8, from 25.4 before 25.4.5, from 26.1 before 26.1.2.
How severe is CVE-2025-15579?: CVE-2025-15579 has a CVSS 4.0 base score of 9.5, rated critical severity.
Is CVE-2025-15579 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (25th percentile), an estimate of the probability of exploitation in the next 30 days.
How do I fix CVE-2025-15579?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.
Does CVE-2025-15579 have an EU (EUVD) identifier?: Yes. CVE-2025-15579 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2025-207782.
When was CVE-2025-15579 published?: CVE-2025-15579 was published on 2026-02-18 and last updated on 2026-06-17.

References

https://support.opentext.com/csm?id=ot_kb_unauthenticated&sysparm_article=KB0859600&sys_kb_id=f82c01214707b6144549b6bd416d43b7&spa=1

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