What is CVE-2023-46363?

CVE-2023-46363 is a medium-severity vulnerability in Jbig2enc Project, classified under Buffer Copy without Checking Size of Input (Classic Buffer Overflow). CVSS score: 5.5/10. Published 2023-11-08.

How severe is CVE-2023-46363?

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

Buffer overflow in Jbig2enc Project

CVE-2023-46363

jbig2enc v0.28 was discovered to contain a SEGV via jbig2_add_page in src/jbig2enc.cc:512.

Vulnerability class: Buffer Overflow

Published 2023-11-08 · 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 (21.0th percentile), scored 2026-10-01.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 21st percentile — 21.0% 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

Jbig2enc Project — versions 0.28

Weakness classification (CWE)

CWE-120 — Buffer Copy without Checking Size of Input (Classic Buffer Overflow)

References

github.com/agl/jbig2enc (Product)
github.com/agl/jbig2enc/issues/85 (Exploit, Issue Tracking, Vendor Advisory)

Frequently asked questions

What is CVE-2023-46363?: CVE-2023-46363 is a medium-severity vulnerability in Jbig2enc Project, classified under Buffer Copy without Checking Size of Input (Classic Buffer Overflow). CVSS score: 5.5/10. Published 2023-11-08.
How severe is CVE-2023-46363?: Medium severity. CVSS v3 base score is 5.5 out of 10.