What is CVE-2020-27545?

CVE-2020-27545 is a medium-severity vulnerability in Libdwarf Project, classified under Release of Invalid Pointer or Reference. CVSS score: 6.5/10. Published 2023-04-16.

How severe is CVE-2020-27545?

Medium severity. CVSS v3 base score is 6.5 out of 10.

Vulnerability in Libdwarf Project

CVE-2020-27545

libdwarf before 20201017 has a one-byte out-of-bounds read because of an invalid pointer dereference via an invalid line table in a crafted object.

Published 2023-04-16 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 6.5 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H.

EPSS exploit prediction

EPSS: 0.008 (55.7th percentile), scored 2026-09-30.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 56th percentile — 55.7% 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

Libdwarf Project

Weakness classification (CWE)

CWE-763 — Release of Invalid Pointer or Reference

References

sourceforge.net/projects/libdwarf/ (Product)
github.com/davea42/libdwarf-code/commit/95f634808c01f1c61bbec56ed2395af997f397ea (Patch)
www.prevanders.net/dwarfbug.html (Third Party Advisory)
web.archive.org/web/20190601140703/https://sourceforge.net/projects/libdwarf/ (Product)
bugzilla.redhat.com/show_bug.cgi (Permissions Required, Third Party Advisory, Issue Tracking)

Frequently asked questions

What is CVE-2020-27545?: CVE-2020-27545 is a medium-severity vulnerability in Libdwarf Project, classified under Release of Invalid Pointer or Reference. CVSS score: 6.5/10. Published 2023-04-16.
How severe is CVE-2020-27545?: Medium severity. CVSS v3 base score is 6.5 out of 10.