# CVE-2015-2027: Auth bypass in n/a

> Remote attackers can bypass access restrictions on IBM WebSphere eXtreme Scale by exploiting improper logout handling on unattended workstations.

- **Severity:** Low 2.1 (`AV:L/AC:L/Au:N/C:N/I:P/A:N`)
- **Exploited in the wild:** Not known
- **Login needed:** Any signed-in user
- **Attackable:** Over the internet
- **Victim action needed:** A user has to click or open something
- **Fix available:** No
- **Published:** 4 Oct 2015
- **Updated:** 6 Aug 2024
- **Also known as:** GHSA-x78w-8h8q-grw6

## What is CVE-2015-2027?

CVE-2015-2027 is a low-severity authentication bypass vulnerability in n/a, published on 4 Oct 2015. Any signed-in user can exploit it over the network, and only if a user opens a file or follows a link.

### Official description

IBM WebSphere eXtreme Scale 7.1.0 before 7.1.0.3 and 7.1.1 before 7.1.1.1 improperly performs logout actions, which allows remote attackers to bypass intended access restrictions by leveraging an unattended workstation.

Weakness: CWE-264

## Which versions are affected by CVE-2015-2027?

It affects 1 product.


Products: Ibm Websphere Extreme Scale.

## How do I fix CVE-2015-2027?

No fix has been published for CVE-2015-2027 yet. Limit exposure of the affected software until one is available.

## Is CVE-2015-2027 being exploited?

There is no known exploitation of CVE-2015-2027 in the wild and no public exploit code.

## Other vulnerabilities in n/a

- [CVE-2026-13759](https://insights.sbomify.com/CVE-2026-13759/): IBM WebSphere eXtreme Scale is affected by Insecure Deserilization (high 7.5)
- [CVE-2026-13772](https://insights.sbomify.com/CVE-2026-13772/): IBM WebSphere eXtreme Scale's OQL is affected by remote code execution (high 7.5)
- [CVE-2013-5393](https://insights.sbomify.com/CVE-2013-5393/): Auth bypass in n/a (high 7.5)
- [CVE-2026-9002](https://insights.sbomify.com/CVE-2026-9002/): IBM WebSphere eXtremes Scale is affected by uncontrolled resource consumption when XDF is enabled (medium 6.5)
- [CVE-2019-4109](https://insights.sbomify.com/CVE-2019-4109/): Cross-site scripting in WebSphere eXtreme Scale (medium 6.1)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2015-2027 and fix it if it is affected.

What it is: CVE-2015-2027 is a low-severity authentication bypass vulnerability in n/a, published on 4 Oct 2015. Any signed-in user can exploit it over the network, and only if a user opens a file or follows a link.
Exploitation: There is no known exploitation of CVE-2015-2027 in the wild and no public exploit code.

Affected product: n/a. 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-2015-2027/ (Markdown: https://insights.sbomify.com/CVE-2015-2027/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2015-2027
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2015-2027
- OSV: https://osv.dev/vulnerability/CVE-2015-2027

---
From sbomify Insights: https://insights.sbomify.com/CVE-2015-2027/
Summaries are generated and may contain mistakes; the official description above is the record.