# 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.

- **Severity:** Medium 6.3 (`CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L`)
- **Exploited in the wild:** Not known
- **Login needed:** Any signed-in user
- **Attackable:** Over the internet
- **Victim action needed:** Not needed
- **Fix available:** No
- **Published:** 20 Jan 2026
- **Updated:** 20 Jan 2026
- **Also known as:** GHSA-4647-m5cg-qgfr

## 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 (DEPRECATED: Insufficient Session Expiration)

## Which versions are affected by CVE-2025-36063?

It affects 1 product.


Products: 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.

## 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](https://insights.sbomify.com/CVE-2023-32331/): IBM Connect:Express for UNIX denial of service (high 7.5)
- [CVE-2020-4767](https://insights.sbomify.com/CVE-2020-4767/): Memory corruption in Sterling Connect Direct for Microsoft Windows (high 7.5)
- [CVE-2025-36137](https://insights.sbomify.com/CVE-2025-36137/): IBM Sterling Connect:Direct for UNIX command execution (high 7.2)
- [CVE-2018-1903](https://insights.sbomify.com/CVE-2018-1903/): Privilege escalation in Sterling Connect:Direct for UNIX (medium 6.7)
- [CVE-2023-29260](https://insights.sbomify.com/CVE-2023-29260/): IBM Sterling Connect:Express for UNIX server-side request forgery (medium 6.5)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2025-36063 and fix it if it is affected.

What it is: 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.
Exploitation: There is no known exploitation of CVE-2025-36063 in the wild and no public exploit code.

Affected product: IBM Sterling Connect:Express Adapter for Sterling B2B Integrator 5.2.0. No package-level version data is available, so check the vendor advisory linked from the reference page.

Task:
1. Search the dependency manifests and lockfiles (for example package.json, package-lock.json, requirements.txt, poetry.lock, uv.lock, pom.xml, build.gradle, go.mod, Cargo.lock, Gemfile.lock) and any Dockerfiles for the affected packages, including transitive dependencies.
2. If an affected version is in use, upgrade it to the fixed version for its release line with the project's package manager, so the lockfile is regenerated. Prefer the smallest upgrade that fixes it.
3. If there is no fix, or the upgrade would break the build, do not guess: explain the risk and the safest workaround instead.
4. Run the tests and summarise what changed and why.
5. If nothing in the project is affected, say so and change nothing.

Reference: https://insights.sbomify.com/CVE-2025-36063/ (Markdown: https://insights.sbomify.com/CVE-2025-36063/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2025-36063
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2025-36063
- OSV: https://osv.dev/vulnerability/CVE-2025-36063

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From sbomify Insights: https://insights.sbomify.com/CVE-2025-36063/
Summaries are generated and may contain mistakes; the official description above is the record.