What is CVE-2017-9900?

CVE-2017-9900 is a high-severity vulnerability in Xnview, classified under Improper Restriction of Operations within the Bounds of a Memory Buffer. CVSS score: 7.8/10. Published 2017-07-05.

How severe is CVE-2017-9900?

High severity. CVSS v3 base score is 7.8 out of 10.

Buffer overflow in Xnview

CVE-2017-9900

XnView Classic for Windows Version 2.40 allows remote attackers to execute code via a crafted .fpx file, related to "Data from Faulting Address controls Code Flow starting at Xfpx!gffGetFormatInfo+0x000000000002e385."

Vulnerability class: Buffer Overflow

Published 2017-07-05 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 7.8 (High). Vector: CVSS:3.0/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H.

EPSS exploit prediction

EPSS: 0.016 (74.8th percentile), scored 2026-09-29.

Low probability of exploitation in the next 30 days, but still tracked. 75th percentile — 74.8% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.016 · newest: 0.016 · change: 0.000

Affected products

Xnview — versions 2.40

Weakness classification (CWE)

CWE-119 — Improper Restriction of Operations within the Bounds of a Memory Buffer

References

github.com/wlinzi/security_advisories/tree/master/CVE-2017-9900 (Third Party Advisory)

Frequently asked questions

What is CVE-2017-9900?: CVE-2017-9900 is a high-severity vulnerability in Xnview, classified under Improper Restriction of Operations within the Bounds of a Memory Buffer. CVSS score: 7.8/10. Published 2017-07-05.
How severe is CVE-2017-9900?: High severity. CVSS v3 base score is 7.8 out of 10.