CVE-2025-55266 HCL Aftermarket DPC is affected by Session Fixation

Medium 5.9 Published Updated

Attackers can hijack user sessions in HCL Aftermarket DPC to perform unauthorized transactions on behalf of the victim.

Exploited in the wild
Not known
Login needed
Not needed
Attackable
Over the internet
Victim action needed
A user has to click or open something
Fix
None listed

What is CVE-2025-55266?

CVE-2025-55266 is a medium-severity authentication bypass vulnerability in HCL Aftermarket DPC, published on 26 Mar 2026. An attacker can exploit it over the internet without logging in, and only if a user opens a file or follows a link.

Official description

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.

Weakness: CWE-384

Which versions are affected by CVE-2025-55266?

It affects 1 product.

Products include Hcltech Aftermarket Cloud.

How do I fix CVE-2025-55266?

No fix has been published for CVE-2025-55266 yet. Limit exposure of the affected software until one is available.

Upgrade, and rotate credentials and sessions that may have been exposed. More about Authentication bypass.

Is CVE-2025-55266 being exploited?

There is no known exploitation of CVE-2025-55266 in the wild and no public exploit code.

Sources

Also known as GHSA-4mx2-9grf-8f85.

Is CVE-2025-55266 in your software?

Upload an SBOM and sbomify checks it against every vulnerability here, every day.

Check your SBOMs for free