# CVE-2025-33124: Fixes to common vulnerabilities found in IBM Db2 Merge Backup for Linux, UNIX and Windows

> An authenticated user can crash IBM DB2 Merge Backup due to incorrect buffer size calculation, requiring a patch to prevent denial of service.

- **Severity:** Medium 6.5 (`CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H`)
- **Exploited in the wild:** Not known
- **Login needed:** Any signed-in user
- **Attackable:** Over the internet
- **Victim action needed:** Not needed
- **Fix available:** No
- **Published:** 17 Feb 2026
- **Updated:** 17 Feb 2026
- **Also known as:** GHSA-5mcc-f9f9-29w9

## What is CVE-2025-33124?

CVE-2025-33124 is a medium-severity vulnerability in IBM DB2 Merge Backup for Linux, UNIX and Windows, published on 17 Feb 2026. Any signed-in user can exploit it over the network, with no action from the victim.

### Official description

IBM DB2 Merge Backup for Linux, UNIX and Windows 12.1.0.0 could allow an authenticated user to cause the program to crash due to the incorrect calculation of a buffer size.

Weakness: CWE-131 (Incorrect Calculation of Buffer Size)

## Which versions are affected by CVE-2025-33124?

It affects 1 product.


Products: Ibm Db2 Merge Backup.

## How do I fix CVE-2025-33124?

No fix has been published for CVE-2025-33124 yet. Limit exposure of the affected software until one is available.

## Is CVE-2025-33124 being exploited?

There is no known exploitation of CVE-2025-33124 in the wild and no public exploit code.

## Other vulnerabilities in IBM DB2 Merge Backup for Linux, UNIX and Windows

- [CVE-2025-33130](https://insights.sbomify.com/CVE-2025-33130/): Fixes to common vulnerabilities found in IBM Db2 Merge Backup for Linux, UNIX and Windows (medium 6.5)
- [CVE-2025-13108](https://insights.sbomify.com/CVE-2025-13108/): Fixes to common vulnerabilities found in IBM Db2 Merge Backup for Linux, UNIX and Windows (medium 5.5)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2025-33124 and fix it if it is affected.

What it is: CVE-2025-33124 is a medium-severity vulnerability in IBM DB2 Merge Backup for Linux, UNIX and Windows, published on 17 Feb 2026. Any signed-in user can exploit it over the network, with no action from the victim.
Exploitation: There is no known exploitation of CVE-2025-33124 in the wild and no public exploit code.

Affected product: IBM DB2 Merge Backup for Linux, UNIX and Windows. 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-2025-33124/ (Markdown: https://insights.sbomify.com/CVE-2025-33124/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2025-33124
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2025-33124
- OSV: https://osv.dev/vulnerability/CVE-2025-33124

---
From sbomify Insights: https://insights.sbomify.com/CVE-2025-33124/
Summaries are generated and may contain mistakes; the official description above is the record.