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-2020-1751

CVE-2020-1751HIGH

Red Hat glibc — An out-of-bounds write vulnerability was found in glibc before 2.31 when handling signal trampolines on PowerPC.

  AV  AC  PR  UI  S  C  I  A   CVSS    EPSS   %ile   KEV
   L   H   L   N  U  H  H  H    7.0   .0054   44.0     —

AFFECTED
  Product  Versions  Fixed
  glibc    2.31 –    —

TIMELINE
  Nov 27  Reserved by redhat
  Apr 17  Published (CNA: redhat)
  Oct 14  RESCORED — CVE-2020-1751 (Red Hat glibc). CVSS 5.1 → 7 (NVD).

CWE-787 · CNA: redhat · CVSS v3.1 · 6 references · NVD status: Modified

Description

An out-of-bounds write vulnerability was found in glibc before 2.31 when handling signal trampolines on PowerPC. Specifically, the backtrace function did not properly check the array bounds when storing the frame address, resulting in a denial of service or potential code execution. The highest threat from this vulnerability is to system availability.

Lifecycle

Complete event history — 3 events, chronological
Date	Event	Detail
November 27, 2019	Reserved	Reserved by redhat
April 17, 2020	Published	Published (CNA: redhat)
October 14, 2026	RESCORED	RESCORED — CVE-2020-1751 (Red Hat glibc). CVSS 5.1 → 7 (NVD).

Affected

Affected products and packages — 1 row
Vendor	Product / Package	Ecosystem	Version introduced	Fixed
Red Hat	glibc	—	2.31	—

Weaknesses

CWE-787

References (6)

https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2020-1751 [Issue Tracking, Patch, Third Party Advisory]
https://cert-portal.siemens.com/productcert/html/ssa-398330.html
https://security.gentoo.org/glsa/202006-04 [Third Party Advisory]
https://security.netapp.com/advisory/ntap-20200430-0002/ [Third Party Advisory]
https://sourceware.org/bugzilla/show_bug.cgi?id=25423 [Issue Tracking, Third Party Advisory]
https://usn.ubuntu.com/4416-1/ [Third Party Advisory]

Authoritative record: CVE-2020-1751 at cve.org

Vendors: red hat

Weaknesses: CWE-787

About this page

This is a reference page, not a dated page of record. It assembles the complete lifecycle of CVE-2020-1751 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.