CVE-2020-1763: the libreswan Project libreswan

Out-of-bounds read in libreswan

CVSS 7.5 HighEPSS 0.036 · 89th percentile

Published by the CVE Program (CNA: redhat) at 12 May 2020, 13:41 UTC. agentprime has not analysed this yet, so whether it affects any app is not known. This CVE names a vendor and product rather than a package, so the lockfile check doesn’t match it.

Affected products, as the CNA wrote them
Vendor	Product	Versions
the libreswan Project	libreswan	affected from versions 3.27 till 3.31

Identifiers

CVE-2020-1763

CNA

redhat

Weakness (CWE)

CWE-125

Not analysed yet

We haven’t published our own analysis of this CVE. If a person reviews it, this page will say what’s affected and what has to be true for it to matter.

Severity and exploitation

Score	Rating	CVSS	Vector	Source
7.5	High	3.1	CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H	CNA (redhat)

CISA KEV Not listed.
EPSS 0.036, the 89th percentile, on 6 Nov 2026: FIRST’s estimate of the chance of exploitation in the next 30 days.

Timeline

This record came from the full history of the CVE Program, published 12 May 2020. New records show when each source confirmed them.

Sources

References from the CNA

libreswan.org/security/CVE-2020-1763/CVE-2020-1763.txt confirm
bugzilla.redhat.com/show_bug.cgi?id=CVE-2020-1763 confirm
bugzilla.redhat.com/show_bug.cgi?id=1813329
github.com/libreswan/libreswan/commit/471a3e41a449d7c753bc4edbba4239501bb62ba8 confirm
www.debian.org/security/2020/dsa-4684 vendor-advisorydebian
security.gentoo.org/glsa/202007-21 vendor-advisorygentoo
cert-portal.siemens.com/productcert/pdf/ssa-379803.pdf confirm
us-cert.cisa.gov/ics/advisories/icsa-21-040-04

Facts on this page come from the CVE List as the CNA published them, with CVSS from the sources named above, CISA KEV and FIRST EPSS. Vendors, products and versions are shown as the CNA wrote them. We don’t reproduce the CVE’s description.