CVE-2025-36063 Multiple vulnerabilities were addressed in IBM Sterling Connect:Express for UNIX.
Authenticated users can impersonate others due to session invalidation failure after logout in IBM Sterling Connect:Express.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2025-36063?
CVE-2025-36063 is a medium-severity authentication bypass vulnerability in IBM Sterling Connect:Express Adapter for Sterling B2B Integrator 5.2.0, published on 20 Jan 2026. Any signed-in user can exploit it over the network, with no action from the victim.
Official description
IBM Sterling Connect:Express Adapter for Sterling B2B Integrator 5.2.0 5.2.0.00 through 5.2.0.12 does not invalidate session after a logout which could allow an authenticated user to impersonate another user on the system.
Weakness: CWE-613
Which versions are affected by CVE-2025-36063?
It affects 1 product.
Products include Ibm Sterling Connect\.
How do I fix CVE-2025-36063?
No fix has been published for CVE-2025-36063 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-2025-36063 being exploited?
There is no known exploitation of CVE-2025-36063 in the wild and no public exploit code.
Other vulnerabilities in IBM Sterling Connect:Express Adapter for Sterling B2B Integrator 5.2.0
- CVE-2023-32331 IBM Connect:Express for UNIX denial of service
- CVE-2020-4767 Memory corruption in Sterling Connect Direct for Microsoft Windows
- CVE-2025-36137 IBM Sterling Connect:Direct for UNIX command execution
- CVE-2018-1903 Privilege escalation in Sterling Connect:Direct for UNIX
- CVE-2023-29260 IBM Sterling Connect:Express for UNIX server-side request forgery
Sources
Also known as GHSA-4647-m5cg-qgfr.