# CVE-2015-0633: Auth bypass in n/a

> Remote attackers can bypass access restrictions in Cisco UCS IMC by sending crafted DHCP packets on the local network.

- **Severity:** Medium 6.8 (`AV:A/AC:L/Au:N/C:N/I:P/A:C`)
- **Exploited in the wild:** Not known
- **Login needed:** Not needed
- **Attackable:** Local or same network only
- **Victim action needed:** Not needed
- **Fix available:** No
- **Published:** 26 Feb 2015
- **Updated:** 6 Aug 2024
- **Also known as:** GHSA-w33q-rw95-475p

## What is CVE-2015-0633?

CVE-2015-0633 is a medium-severity authentication bypass vulnerability in Cisco Unified Computing System, published on 26 Feb 2015. It can only be exploited from the same machine or local network, with no action from the victim.

### Official description

The Integrated Management Controller (IMC) in Cisco Unified Computing System (UCS) 1.4(7h) and earlier on C-Series servers allows remote attackers to bypass intended access restrictions by sending crafted DHCP response packets on the local network, aka Bug ID CSCuf52876.

Weakness: CWE-20 (Improper Input Validation)

## Which versions are affected by CVE-2015-0633?

It affects 1 product.


Products: Cisco Unified Computing System.

## How do I fix CVE-2015-0633?

No fix has been published for CVE-2015-0633 yet. Limit exposure of the affected software until one is available.

## Is CVE-2015-0633 being exploited?

There is no known exploitation of CVE-2015-0633 in the wild and no public exploit code.

## Other vulnerabilities in Cisco Unified Computing System

- [CVE-2026-20200](https://insights.sbomify.com/CVE-2026-20200/): Cisco Integrated Management Controller Argument Injection and Remote Code Execution Vulnerability (high 8.8)
- [CVE-2026-20094](https://insights.sbomify.com/CVE-2026-20094/): Cisco Integrated Management Controller Command Injection Vulnerability (high 8.8)
- [CVE-2018-0430](https://insights.sbomify.com/CVE-2018-0430/): Cisco Integrated Management Controller Command Injection Vulnerability (high 8.8)
- [CVE-2018-0431](https://insights.sbomify.com/CVE-2018-0431/): Cisco Integrated Management Controller Command Injection Vulnerability (high 8.8)
- [CVE-2012-4078](https://insights.sbomify.com/CVE-2012-4078/): Auth bypass in n/a (high 8.5)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2015-0633 and fix it if it is affected.

What it is: CVE-2015-0633 is a medium-severity authentication bypass vulnerability in Cisco Unified Computing System, published on 26 Feb 2015. It can only be exploited from the same machine or local network, with no action from the victim.
Exploitation: There is no known exploitation of CVE-2015-0633 in the wild and no public exploit code.

Affected product: Cisco Unified Computing System. 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-2015-0633/ (Markdown: https://insights.sbomify.com/CVE-2015-0633/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2015-0633
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2015-0633
- OSV: https://osv.dev/vulnerability/CVE-2015-0633

---
From sbomify Insights: https://insights.sbomify.com/CVE-2015-0633/
Summaries are generated and may contain mistakes; the official description above is the record.