What is CVE-2017-7721?

CVE-2017-7721 is a high-severity vulnerability in Irfanview Fpx, classified under Improper Input Validation. CVSS score: 7.8/10. Published 2017-04-30.

How severe is CVE-2017-7721?

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

Improper input validation in Irfanview Fpx

CVE-2017-7721

IrfanView version 4.44 (32bit) with FPX Plugin before 4.45 has an Access Violation and crash in processing a FlashPix (.FPX) file.

Vulnerability class: Drupalgeddon 2 (CVE-2018-7600)

Published 2017-04-30 · 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 (75.4th percentile), scored 2026-09-29.

Low probability of exploitation in the next 30 days, but still tracked. 75th percentile — 75.4% 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

Irfanview Fpx
Irfanview — versions 4.44

Weakness classification (CWE)

CWE-20 — Improper Input Validation

References

www.irfanview.com/plugins.htm (Vendor Advisory)
github.com/wlinzi/security_advisories/tree/master/CVE-2017-7721 (Third Party Advisory)

Frequently asked questions

What is CVE-2017-7721?: CVE-2017-7721 is a high-severity vulnerability in Irfanview Fpx, classified under Improper Input Validation. CVSS score: 7.8/10. Published 2017-04-30.
How severe is CVE-2017-7721?: High severity. CVSS v3 base score is 7.8 out of 10.