# CVE-2015-0775: Denial of service in n/a

> Remote attackers can cause a denial of service by sending a specific terminal-session request during TELNET setup on Cisco Nexus devices.

- **Severity:** Medium 5.0 (`AV:N/AC:L/Au:N/C:N/I:N/A:P`)
- **Exploited in the wild:** Not known
- **Login needed:** Not needed
- **Attackable:** Over the internet
- **Victim action needed:** Not needed
- **Fix available:** No
- **Published:** 12 Jun 2015
- **Updated:** 6 Aug 2024
- **Also known as:** GHSA-5mfv-779g-c9j3

## What is CVE-2015-0775?

CVE-2015-0775 is a medium-severity denial of service vulnerability in Cisco Nx-Os, published on 12 Jun 2015. An attacker can exploit it over the internet without logging in, with no action from the victim.

### Official description

The banner (aka MOTD) implementation in Cisco NX-OS 4.1(2)E1(1f) on Nexus 4000 devices, 5.2(1)SV3(2.1) on Nexus 1000V devices, 6.0(2)N2(2) on Nexus 5000 devices, 6.2(11) on MDS 9000 devices, 6.2(12) on Nexus 7000 devices, 7.0(3) on Nexus 9000 devices, and 7.2(0)ZN(99.67) on Nexus 3000 devices allows remote attackers to cause a denial of service (login process reset) via an unspecified terminal-session request during TELNET session setup, aka Bug IDs CSCuo10554, CSCuu75466, CSCuu75471, CSCuu75484, CSCuu75498, CSCuu77170, and CSCuu77182.

Weakness: CWE-399

## Which versions are affected by CVE-2015-0775?

It affects 3 products.


Products: Cisco Mds 9000 Nx-Os, Cisco Nexus 1000v, Cisco Nx-Os.

## How do I fix CVE-2015-0775?

No fix has been published for CVE-2015-0775 yet. Limit exposure of the affected software until one is available.

## Is CVE-2015-0775 being exploited?

There is no known exploitation of CVE-2015-0775 in the wild and no public exploit code.

## Other vulnerabilities in Cisco Nx-Os

- [CVE-2017-6655](https://insights.sbomify.com/CVE-2017-6655/): Denial of service in Cisco NX-OS Software Fibre Channel over Ethernet (medium 6.5)
- [CVE-2015-4323](https://insights.sbomify.com/CVE-2015-4323/): Memory corruption in n/a (medium 6.1)
- [CVE-2012-1340](https://insights.sbomify.com/CVE-2012-1340/): Denial of service in n/a (medium 5.0)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2015-0775 and fix it if it is affected.

What it is: CVE-2015-0775 is a medium-severity denial of service vulnerability in Cisco Nx-Os, published on 12 Jun 2015. An attacker can exploit it over the internet without logging in, with no action from the victim.
Exploitation: There is no known exploitation of CVE-2015-0775 in the wild and no public exploit code.

Affected product: Cisco Nx-Os. 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-2015-0775/ (Markdown: https://insights.sbomify.com/CVE-2015-0775/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2015-0775
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2015-0775
- OSV: https://osv.dev/vulnerability/CVE-2015-0775

---
From sbomify Insights: https://insights.sbomify.com/CVE-2015-0775/
Summaries are generated and may contain mistakes; the official description above is the record.