CVE-2021-45960 · agentprime

In Expat (aka libexpat) before 2.4.3, a left shift by 29 (or more) places in the storeAtts function in xmlparse.c can lead to realloc misbehavior (e.g., allocating too few bytes, or only freeing memo…

CVSS 8.8 HighEPSS 0.047 · 91st percentile

Published by the CVE Program (CNA: mitre) at 1 Jan 2022, 18:47 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
Not given	Not given	affected n/a

Identifiers

CVE-2021-45960

CNA

mitre

Weakness (CWE)

CWE-682

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
8.8	High	3.1	CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H	ADP (CISA-ADP)

CISA KEV Not listed.
EPSS 0.047, the 91st 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 1 Jan 2022. New records show when each source confirmed them.

Sources

References from the CNA

github.com/libexpat/libexpat/issues/531
github.com/libexpat/libexpat/pull/534
bugzilla.mozilla.org/show_bug.cgi?id=1217609
www.openwall.com/lists/oss-security/2022/01/17/3 mailing-listmlist
security.netapp.com/advisory/ntap-20220121-0004/ confirm
www.tenable.com/security/tns-2022-05 confirm
www.debian.org/security/2022/dsa-5073 vendor-advisorydebian
cert-portal.siemens.com/productcert/pdf/ssa-484086.pdf confirm
security.gentoo.org/glsa/202209-24 vendor-advisorygentoo

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.