CVE-2023-43251 — XNSoft Nconvert 7

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.

01What is this vulnerability?

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.

02Affected products

Vendor	Product	Versions
n	a / n/a	n/a

03Active exploitation status

Not currently listed on the CISA Known Exploited Vulnerabilities (KEV) catalog. EPSS is the best forward-looking signal — see the EPSS row above.

04Recommended remediation

• Patch to a fixed version listed in the vendor advisory (see references below).
• Mitigate with WAF rules, network egress filters, or feature flags where the patch is not yet available.
• Hunt historical logs for exploitation indicators — see Detection signatures below.

05Technical details

For the full vendor write-up, exploit chains, and reference implementations, see the references list in section 09.

06Detection signatures

Open the Sigma generator with a pre-filled prompt for this CVE to draft a starting detection in your stack of choice:

Open in Sigma generator →

07Related CVEs

No directly-cited follow-up CVEs in the KB record for this advisory. The references list in section 09 carries the vendor cross-references.

08Timeline

• Published: 2023-10-19T00:00:00.000Z
• Last modified: 2024-09-12T20:19:36.780Z

09References

• www.xnview.com — https://www.xnview.com/en/nconvert/
• github.com — https://github.com/mrtouch93/exploits/tree/main/NConvert7.136/SEH
• packetstormsecurity.com — http://packetstormsecurity.com/files/175145/XNSoft-Nconvert-7.136-Buffer-Overflo…
• seclists.org — http://seclists.org/fulldisclosure/2023/Oct/15