What is CVE-2019-13243?

CVE-2019-13243 is a high-severity vulnerability in Irfanview, classified under Out-of-bounds Write. CVSS score: 7.8/10. Published 2019-07-04.

How severe is CVE-2019-13243?

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

Is CVE-2019-13243 known to be exploited?

9 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.

Buffer overflow in Irfanview

CVE-2019-13243

IrfanView 4.52 has a User Mode Write AV starting at image00400000+0x00000000000249c6.

Vulnerability class: Buffer Overflow

Published 2019-07-04 · 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: 0.021 (80.9th percentile), scored 2026-09-30.

Low probability of exploitation in the next 30 days, but still tracked. 81st percentile — 80.9% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.021 · newest: 0.021 · change: 0.000

Affected products

Irfanview — versions 4.52

Weakness classification (CWE)

CWE-787 — Out-of-bounds Write

Public proof-of-concept exploits

References

github.com/apriorit/pentesting/blob/master/bugs/irfanview/0x00000000000249c6.md (Exploit, Third Party Advisory)

Frequently asked questions

What is CVE-2019-13243?: CVE-2019-13243 is a high-severity vulnerability in Irfanview, classified under Out-of-bounds Write. CVSS score: 7.8/10. Published 2019-07-04.
How severe is CVE-2019-13243?: High severity. CVSS v3 base score is 7.8 out of 10.
Is CVE-2019-13243 known to be exploited?: 9 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.