# CVE-2025-51005: Memory corruption in n/a

> A heap-buffer-overflow in tcpreplay's tcpliveplay utility allows attackers to cause a denial of service via a crafted pcap file.

- **Severity:** High 7.5 (`CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H`)
- **Exploited in the wild:** Not known
- **Login needed:** Not needed
- **Attackable:** Over the internet
- **Victim action needed:** Not needed
- **Fix available:** No
- **Published:** 23 Sep 2025
- **Updated:** 24 Sep 2025
- **Also known as:** DEBIAN-CVE-2025-51005, GHSA-6cvx-mw62-87pq, UBUNTU-CVE-2025-51005

## What is CVE-2025-51005?

CVE-2025-51005 is a high-severity memory corruption vulnerability in Broadcom Tcpreplay, published on 23 Sep 2025. An attacker can exploit it over the internet without logging in, with no action from the victim.

### Official description

A heap-buffer-overflow vulnerability exists in the tcpliveplay utility of the tcpreplay-4.5.1. When a crafted pcap file is processed, the program incorrectly handles memory in the checksum calculation logic at do_checksum_math_liveplay in tcpliveplay.c, leading to a possible denial of service.

Weakness: CWE-122 (Heap-based Buffer Overflow)

## Which versions are affected by CVE-2025-51005?

It affects 1 product.


Products: Broadcom Tcpreplay.

## How do I fix CVE-2025-51005?

No fix has been published for CVE-2025-51005 yet. Limit exposure of the affected software until one is available.

## Is CVE-2025-51005 being exploited?

It is not confirmed as exploited in the wild, but public exploit code for CVE-2025-51005 exists.

## Other vulnerabilities in Broadcom Tcpreplay

- [CVE-2018-18408](https://insights.sbomify.com/CVE-2018-18408/): Use after free in n/a (critical 9.8)
- [CVE-2020-12740](https://insights.sbomify.com/CVE-2020-12740/): Memory corruption in n/a (critical 9.1)
- [CVE-2025-51006](https://insights.sbomify.com/CVE-2025-51006/): Use after free in n/a (high 7.8)
- [CVE-2022-37047](https://insights.sbomify.com/CVE-2022-37047/): Memory corruption in n/a (high 7.8)
- [CVE-2022-37048](https://insights.sbomify.com/CVE-2022-37048/): Memory corruption in n/a (high 7.8)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2025-51005 and fix it if it is affected.

What it is: CVE-2025-51005 is a high-severity memory corruption vulnerability in Broadcom Tcpreplay, published on 23 Sep 2025. An attacker can exploit it over the internet without logging in, with no action from the victim.
Exploitation: It is not confirmed as exploited in the wild, but public exploit code for CVE-2025-51005 exists.

Affected product: Broadcom Tcpreplay. 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-2025-51005/ (Markdown: https://insights.sbomify.com/CVE-2025-51005/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2025-51005
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2025-51005
- OSV: https://osv.dev/vulnerability/CVE-2025-51005

---
From sbomify Insights: https://insights.sbomify.com/CVE-2025-51005/
Summaries are generated and may contain mistakes; the official description above is the record.