# CVE-2018-25323: Allok AVI DivX MPEG to DVD Converter 2.6.1217 Buffer Overflow SEH

> Local attackers can execute arbitrary code by exploiting a buffer overflow in the License Name field of Allok AVI DivX MPEG to DVD Converter.

- **Severity:** High 8.6 (`CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N`)
- **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:** 17 May 2026
- **Updated:** 18 May 2026
- **Also known as:** GHSA-mgqh-f588-pvcg

## What is CVE-2018-25323?

CVE-2018-25323 is a high-severity memory corruption vulnerability in Alloksoft Allok AVI DivX MPEG to DVD Converter, published on 17 May 2026. It can only be exploited from the same machine or local network, with no action from the victim.

### Official description

Allok AVI DivX MPEG to DVD Converter 2.6.1217 contains a structured exception handler buffer overflow vulnerability that allows local attackers to execute arbitrary code by supplying a malicious payload. Attackers can craft a text file with a specially crafted buffer containing shellcode and SEH chain overwrite values, then paste the contents into the License Name field to trigger code execution.

Weakness: CWE-120 (Buffer Copy without Checking Size of Input)

## Which versions are affected by CVE-2018-25323?


## How do I fix CVE-2018-25323?

No fix has been published for CVE-2018-25323 yet. Limit exposure of the affected software until one is available.

## Is CVE-2018-25323 being exploited?

There is no known exploitation of CVE-2018-25323 in the wild and no public exploit code.

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2018-25323 and fix it if it is affected.

What it is: CVE-2018-25323 is a high-severity memory corruption vulnerability in Alloksoft Allok AVI DivX MPEG to DVD Converter, published on 17 May 2026. 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-2018-25323 in the wild and no public exploit code.

Affected product: Alloksoft Allok AVI DivX MPEG to DVD Converter. 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-2018-25323/ (Markdown: https://insights.sbomify.com/CVE-2018-25323/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2018-25323
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2018-25323
- OSV: https://osv.dev/vulnerability/CVE-2018-25323

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From sbomify Insights: https://insights.sbomify.com/CVE-2018-25323/
Summaries are generated and may contain mistakes; the official description above is the record.