What is CVE-2023-3436?

CVE-2023-3436 is a low-severity vulnerability in Xpdf, classified under CWE-833. CVSS score: 3.3/10. Published 2023-06-27.

How severe is CVE-2023-3436?

Low severity. CVSS v3 base score is 3.3 out of 10.

Vulnerability in Xpdf

CVE-2023-3436

Xpdf 4.04 will deadlock on a PDF object stream whose "Length" field is itself in another object stream.

Published 2023-06-27 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 3.3 (Low). Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:L.

EPSS exploit prediction

EPSS: 0.002 (5.9th percentile), scored 2026-09-29.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 6th percentile — 5.9% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.002 · newest: 0.002 · change: 0.000

Affected products

Xpdf — versions 4.04
Xpdfreader Xpdf — versions 4.04

Weakness classification (CWE)

References

forum.xpdfreader.com/viewtopic.php (Issue Tracking)

Frequently asked questions

What is CVE-2023-3436?: CVE-2023-3436 is a low-severity vulnerability in Xpdf, classified under CWE-833. CVSS score: 3.3/10. Published 2023-06-27.
How severe is CVE-2023-3436?: Low severity. CVSS v3 base score is 3.3 out of 10.