What is CVE-2026-30006?

CVE-2026-30006 is a medium-severity vulnerability in Xnview Nconvert, classified under Buffer Copy without Checking Size of Input (Classic Buffer Overflow). CVSS score: 6.2/10. Published 2026-03-23.

How severe is CVE-2026-30006?

Medium severity. CVSS v3 base score is 6.2 out of 10.

Buffer overflow in Xnview Nconvert

CVE-2026-30006

XnSoft NConvert 7.230 is vulnerable to Stack Buffer Overrun via a crafted .tiff file.

Vulnerability class: Buffer Overflow

Published 2026-03-23 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 6.2 (Medium). Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H.

EPSS exploit prediction

EPSS: 0.002 (5.8th percentile), scored 2026-09-29.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 6th percentile — 5.8% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.002 · newest: 0.002 · change: +0.000

Affected products

Xnview Nconvert — versions 7.230

Weakness classification (CWE)

CWE-120 — Buffer Copy without Checking Size of Input (Classic Buffer Overflow)

References

www.xnview.com/en/nconvert/ (Product)
github.com/PassMoon/Nconvert_Vul (Exploit, Third Party Advisory)

Frequently asked questions

What is CVE-2026-30006?: CVE-2026-30006 is a medium-severity vulnerability in Xnview Nconvert, classified under Buffer Copy without Checking Size of Input (Classic Buffer Overflow). CVSS score: 6.2/10. Published 2026-03-23.
How severe is CVE-2026-30006?: Medium severity. CVSS v3 base score is 6.2 out of 10.