What is CVE-2022-43071?

CVE-2022-43071 is a medium-severity vulnerability in Xpdfreader Xpdf, classified under Out-of-bounds Write. CVSS score: 5.5/10. Published 2022-11-15.

How severe is CVE-2022-43071?

Medium severity. CVSS v3 base score is 5.5 out of 10.

Buffer overflow in Xpdfreader Xpdf

CVE-2022-43071

A stack overflow in the Catalog::readPageLabelTree2(Object*) function of XPDF v4.04 allows attackers to cause a Denial of Service (DoS) via a crafted PDF file.

Vulnerability class: Buffer Overflow

Published 2022-11-15 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 5.5 (Medium). Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H.

EPSS exploit prediction

EPSS: 0.003 (24.8th percentile), scored 2026-10-04.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 25th percentile — 24.8% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.003 · newest: 0.003 · change: 0.000

Affected products

Xpdfreader Xpdf — versions 4.04

Weakness classification (CWE)

CWE-787 — Out-of-bounds Write

References

forum.xpdfreader.com/viewtopic.php (Exploit, Vendor Advisory)

Frequently asked questions

What is CVE-2022-43071?: CVE-2022-43071 is a medium-severity vulnerability in Xpdfreader Xpdf, classified under Out-of-bounds Write. CVSS score: 5.5/10. Published 2022-11-15.
How severe is CVE-2022-43071?: Medium severity. CVSS v3 base score is 5.5 out of 10.