An Insecure Deserialization vulnerability has been discovered in OpenText™ Directory Services.

published 2026-02-18 8 mo ago modified 2026-06-17 4 mo ago also EUVD-2025-207782

cvss: 9.5; version 4.0, CNA
cisa kev: Not listed; not in CISA's catalog
epss: 0.4%; EPSS 0.4% chance of exploitation in 30 days, percentile 37%
public exploits: 0; none known

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.

Patch / fix

fixed in 1

OpenText™ Directory Services 24.4.16, 25.1.9, 25.2.9, 25.3.8, 25.4.5, 26.1.2

CISA SSVC

Exploitation: none
Automatable: no
Technical impact: total
Assessed: 8 mo ago (2026-02-18)

Exploit prediction

0.43% chance of exploitation in the next 30 days, higher than 37% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by	version	score	vector
CNA	4.0	9.5	CVSS:4.0/AV:N/AC:H/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H/S:P/AU:Y/R:U/V:C/RE:M/U:Red
CNA	4.0	9.5	CVSS:4.0/AV:N/AC:H/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:P/AU:Y/R:U/V:C/RE:M/U:Red

Affected products

OpenText™ Directory Services

Classification

Weakness

CWE-502 Deserialization of Untrusted Data

References

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

Sources

CVE List CVE-2025-15579
NVD CVE-2025-15579

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.

Summary