CVE-2020-27545

MEDIUMNVD 6.56.5—

6.5

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.

CVSS v3: 6.5
EG Score: 6.5(medium)
EPSS: 29.6%
KEV: Not listed

Published

April 16, 2023

Last Modified

February 6, 2025

References (10)

cve@mitrehttp://web.archive.org/web/20190601140703/https://sourceforge.net/projects/libdwarf/
cve@mitrehttps://bugzilla.redhat.com/show_bug.cgi?id=2025694
cve@mitrehttps://github.com/davea42/libdwarf-code/commit/95f634808c01f1c61bbec56ed2395af997f397ea
cve@mitrehttps://sourceforge.net/projects/libdwarf/
cve@mitrehttps://www.prevanders.net/dwarfbug.html#DW202010-001
af854a3a-2127-422b-91ae-364da2661108http://web.archive.org/web/20190601140703/https://sourceforge.net/projects/libdwarf/
af854a3a-2127-422b-91ae-364da2661108https://bugzilla.redhat.com/show_bug.cgi?id=2025694
af854a3a-2127-422b-91ae-364da2661108https://github.com/davea42/libdwarf-code/commit/95f634808c01f1c61bbec56ed2395af997f397ea
af854a3a-2127-422b-91ae-364da2661108https://sourceforge.net/projects/libdwarf/
af854a3a-2127-422b-91ae-364da2661108https://www.prevanders.net/dwarfbug.html#DW202010-001

Weakness Classification(1)

MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.

CWE-763

All Vendor Advisories

(1)

Every vendor that published an advisory referencing this CVE — pulled from our cve_vendor_advisories aggregation. Click any row for the vendor's original advisory page.

Microsoft MSRCCVE-2020-275452025-09-04
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.

Data Freshness Timeline

(refreshed 10× in last 7d / 19× in last 30d)

Every time one of our enrichment pipelines (NVD, MITRE cvelistV5, EPSS, CISA KEV, GHSA, OSV, vendor advisories) ran against this CVE. Most recent first.

2026-06-02 20:11 UTCepss_batch
2026-06-02 20:11 UTCepss_batch
2026-06-01 13:50 UTCepss_batch
2026-05-31 22:29 UTCepss_batch
2026-05-31 22:29 UTCepss_batch
2026-05-31 00:15 UTCepss_batch
2026-05-31 00:15 UTCepss_batch
2026-05-29 13:42 UTCepss_batch
2026-05-28 13:43 UTCepss_batch
2026-05-28 13:43 UTCepss_batch
2026-05-27 13:39 UTCepss_batch
2026-05-27 13:39 UTCepss_batch
2026-05-26 13:42 UTCepss_batch
2026-05-26 13:42 UTCepss_batch
2026-05-26 07:17 UTCepss_batch
2026-05-26 07:17 UTCepss_batch
2026-05-25 02:58 UTCEG score recompute
2026-05-25 02:58 UTCVendor advisory
2026-05-25 02:58 UTCGHSA enrichment

Frequently asked(5)

What is CVE-2020-27545?

CVE-2020-27545 is a medium vulnerability published on April 16, 2023. 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.

When was CVE-2020-27545 disclosed?

CVE-2020-27545 was first published in the National Vulnerability Database on April 16, 2023, with the most recent update on February 6, 2025. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.

Is CVE-2020-27545 actively exploited?

CVE-2020-27545 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 29.6% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.

What is the CVSS score of CVE-2020-27545?

CVE-2020-27545 has a CVSS v3 base score of 6.5 (NVD).

How do I remediate CVE-2020-27545?

Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2020-27545, EchelonGraph cross-links them in the Vendor Advisories panel below — those typically contain the canonical remediation steps, fixed version numbers, and any vendor-specific mitigations.

Dependency Blast Radius

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