What is CVE-2017-9891?

CVE-2017-9891 is a high-severity vulnerability in Irfanview Fpx, 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-2017-9891?

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

Buffer overflow in Irfanview Fpx

CVE-2017-9891

IrfanView version 4.44 (32bit) with FPX Plugin 4.46 allows attackers to cause a denial of service or possibly have unspecified other impact via a crafted .fpx file, related to "Data from Faulting Address is used as one or more arguments in a subsequent Function Call starting at FPX!FPX_GetScanDevicePropertyGroup+0x0000000000007053."

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: 0.009 (59.5th percentile), scored 2026-09-29.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 60th percentile — 59.5% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.009 · newest: 0.009 · change: 0.000

Affected products

Irfanview Fpx — versions 4.46
Irfanview — versions 4.44

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-2017-9891 (Third Party Advisory)
www.irfanview.com/plugins.htm (Vendor Advisory)

Frequently asked questions

What is CVE-2017-9891?: CVE-2017-9891 is a high-severity vulnerability in Irfanview Fpx, 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-2017-9891?: High severity. CVSS v3 base score is 7.8 out of 10.