CVE-2021-3516

high

Description

There's a flaw in libxml2's xmllint in versions before 2.9.11. An attacker who is able to submit a crafted file to be processed by xmllint could trigger a use-after-free. The greatest impact of this flaw is to confidentiality, integrity, and availability.

References

Advisories
More

https://www.oracle.com/security-alerts/cpujan2022.html

https://security.netapp.com/advisory/ntap-20210716-0005/

https://security.gentoo.org/glsa/202107-05

https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/QVM4UJ3376I6ZVOYMHBNX4GY3NIV52WV/

https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/BZOMV5J4PMZAORVT64BKLV6YIZAFDGX6/

https://lists.debian.org/debian-lts-announce/2021/05/msg00008.html

https://gitlab.gnome.org/GNOME/libxml2/-/commit/1358d157d0bd83be1dfe356a69213df9fac0b539

https://bugzilla.redhat.com/show_bug.cgi?id=1954225

https://github.com/advisories/GHSA-7rrm-v45f-jp64

https://gitlab.gnome.org/GNOME/libxml2/-/issues/230

https://euvd.enisa.europa.eu/vulnerability/EUVD-2021-26834

https://cert-portal.siemens.com/productcert/html/ssa-398330.html

Details

Source: Mitre, NVD

Published: 2021-06-01

Updated: 2026-10-14

Risk Information

CVSS v2

Base Score: 6.8

Vector: CVSS2#AV:N/AC:M/Au:N/C:P/I:P/A:P

Severity: Medium

CVSS v3

Base Score: 7.8

Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

Severity: High

EPSS

EPSS: 0.02043