Reference page — cumulative record through Monday, October 19, 2026 UTC. Reference pages update as the archive grows; only dated daily editions are immutable pages of record.

CVE-2020-35493

CVE-2020-35493MEDIUM

n/a binutils — A flaw exists in binutils in bfd/pef.c.

  AV  AC  PR  UI  S  C  I  A   CVSS    EPSS   %ile   KEV
   L   L   N   R  U  N  N  H    5.5   .0114   66.0     —

AFFECTED
  Product   Versions         Fixed
  binutils  binutils 2.34 –  —

TIMELINE
  Dec 17  Reserved by redhat
  Jan 4   Published (CNA: redhat)
  Oct 8   ENRICHED — CVE-2020-35493 (binutils). Received CVSS 5.5 and CPE data from NVD.
  Oct 8   EXPLOIT PUBLISHED — CVE-2020-35493 (binutils). Public exploit reference added.

CWE-20 · CNA: redhat · CVSS v3.1 · 4 references · NVD status: Modified

Description

A flaw exists in binutils in bfd/pef.c. An attacker who is able to submit a crafted PEF file to be parsed by objdump could cause a heap buffer overflow -> out-of-bounds read that could lead to an impact to application availability. This flaw affects binutils versions prior to 2.34.

Lifecycle

Complete event history — 4 events, chronological
Date	Event	Detail
December 17, 2020	Reserved	Reserved by redhat
January 4, 2021	Published	Published (CNA: redhat)
October 8, 2026	ENRICHED	ENRICHED — CVE-2020-35493 (binutils). Received CVSS 5.5 and CPE data from NVD.
October 8, 2026	EXPLOIT PUBLISHED	EXPLOIT PUBLISHED — CVE-2020-35493 (binutils). Public exploit reference added.

Affected

Affected products and packages — 1 row
Vendor	Product / Package	Ecosystem	Version introduced	Fixed
n/a	binutils	—	binutils 2.34	—

Weaknesses

CWE-20

References (4)

https://bugzilla.redhat.com/show_bug.cgi?id=1911437 [Exploit, Issue Tracking, Patch, Third Party Advisory]
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/4KOK3QWSVOUJWJ54HVGIFWNLWQ5ZY4S6/
https://security.gentoo.org/glsa/202107-24 [Third Party Advisory]
https://security.netapp.com/advisory/ntap-20210212-0007/ [Third Party Advisory]

Authoritative record: CVE-2020-35493 at cve.org

Weaknesses: CWE-20

About this page

This is a reference page, not a dated page of record. It assembles the complete lifecycle of CVE-2020-35493 from the CVE Program record, NVD enrichment, the CISA KEV catalog, EPSS, and OSV advisories. The box score's numbers (CVSS, EPSS, KEV status) are current as of Monday, October 19, 2026 UTC and are re-derived as the archive grows; only dated daily editions are immutable pages of record. The authoritative source for this identifier is cve.org.