What is CVE-2025-55266?

CVE-2025-55266 is a medium-severity vulnerability in Hcl Aftermarket Dpc, classified under Session Fixation. CVSS score: 5.9/10. Published 2026-03-26.

How severe is CVE-2025-55266?

Medium severity. CVSS v3 base score is 5.9 out of 10.

Vulnerability in Hcl Aftermarket Dpc

CVE-2025-55266

HCL Aftermarket DPC is affected by Session Fixation which allows attacker to takeover the user's session and use it carry out unauthorized transaction behalf of the user.

Published 2026-03-26 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 5.9 (Medium). Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:N/A:L.

EPSS exploit prediction

EPSS: 0.003 (14.7th percentile), scored 2026-09-29.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 15th percentile — 14.7% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.003 · newest: 0.003 · change: 0.000

Affected products

Hcl Aftermarket Dpc — versions version 1.0.0
Hcltech Aftermarket Cloud — versions 1.0.0

Weakness classification (CWE)

CWE-384 — Session Fixation

References

support.hcl-software.com/csm (Vendor Advisory)

Frequently asked questions

What is CVE-2025-55266?: CVE-2025-55266 is a medium-severity vulnerability in Hcl Aftermarket Dpc, classified under Session Fixation. CVSS score: 5.9/10. Published 2026-03-26.
How severe is CVE-2025-55266?: Medium severity. CVSS v3 base score is 5.9 out of 10.