# CVE-2025-20360: Multiple Cisco Products Snort 3 MIME Denial of Service Vulnerability

> An unauthenticated remote attacker can cause a denial of service by sending crafted HTTP packets that trigger a restart of the Snort 3 Detection Engine.

- **Severity:** Medium 5.8 (`CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:L`)
- **Exploited in the wild:** Not known
- **Login needed:** Not needed
- **Attackable:** Over the internet
- **Victim action needed:** Not needed
- **Fix available:** No
- **Published:** 15 Oct 2025
- **Updated:** 12 Feb 2026
- **Also known as:** GHSA-6w3w-cx38-4j8c

## What is CVE-2025-20360?

CVE-2025-20360 is a medium-severity denial of service vulnerability in Cisco Cyber Vision, published on 15 Oct 2025. An attacker can exploit it over the internet without logging in, with no action from the victim.

### Official description

Multiple Cisco products are affected by a vulnerability in the Snort 3 HTTP Decoder that could allow an unauthenticated, remote attacker to cause the Snort 3 Detection Engine to restart.

This vulnerability is due to a lack of complete error checking when the MIME fields of the HTTP header are parsed. An attacker could exploit this vulnerability by sending crafted HTTP packets through an established connection to be parsed by Snort 3. A successful exploit could allow the attacker to cause a DoS condition when the Snort 3 Detection Engine unexpectedly restarts.

Weakness: CWE-805 (Buffer Access with Incorrect Length Value)

## Which versions are affected by CVE-2025-20360?


## How do I fix CVE-2025-20360?

No fix has been published for CVE-2025-20360 yet. Limit exposure of the affected software until one is available.

## Is CVE-2025-20360 being exploited?

There is no known exploitation of CVE-2025-20360 in the wild and no public exploit code.

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2025-20360 and fix it if it is affected.

What it is: CVE-2025-20360 is a medium-severity denial of service vulnerability in Cisco Cyber Vision, published on 15 Oct 2025. 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-2025-20360 in the wild and no public exploit code.

Affected product: Cisco Cyber Vision. 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-2025-20360/ (Markdown: https://insights.sbomify.com/CVE-2025-20360/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2025-20360
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2025-20360
- OSV: https://osv.dev/vulnerability/CVE-2025-20360

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From sbomify Insights: https://insights.sbomify.com/CVE-2025-20360/
Summaries are generated and may contain mistakes; the official description above is the record.