What is CVE-2022-33027?

CVE-2022-33027 is a high-severity vulnerability in GNU Libredwg, classified under Use After Free. CVSS score: 7.8/10. Published 2022-06-23.

How severe is CVE-2022-33027?

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

Use After Free in GNU Libredwg

CVE-2022-33027

LibreDWG v0.12.4.4608 was discovered to contain a heap-use-after-free via the function dwg_add_handleref at dwg.c.

Vulnerability class: Use-After-Free

Published 2022-06-23 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 7.8 (High). Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H.

EPSS exploit prediction

EPSS: 0.008 (54.4th percentile), scored 2026-09-29.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 54th percentile — 54.4% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.008 · newest: 0.008 · change: +0.000

Affected products

GNU Libredwg

Weakness classification (CWE)

CWE-416 — Use After Free

References

github.com/LibreDWG/libredwg/issues/490 (Exploit, Third Party Advisory, Issue Tracking)

Frequently asked questions

What is CVE-2022-33027?: CVE-2022-33027 is a high-severity vulnerability in GNU Libredwg, classified under Use After Free. CVSS score: 7.8/10. Published 2022-06-23.
How severe is CVE-2022-33027?: High severity. CVSS v3 base score is 7.8 out of 10.