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Vulnerability record · CVE-2020-24977 · published 4 September 2020

CVE-2020-24977: Xmlsoft libxml2 out-of-bounds read vulnerability

Xmlsoft · Libxml2

GNOME project libxml2 v2.9.10 has a global buffer over-read vulnerability in xmlEncodeEntitiesInternal at libxml2/entities.c. The issue has been fixed in commit 50f06b3e.

6.5 CVSS 3.1 Medium EPSS 3.0% · top 13.2% CWE-125 · Out-of-bounds read
6.5CVSS 3.1 base score, v2 6.4
3.0%EPSS exploitation probability, 30 days
NoNot in CISA KEV
18Affected product versions listed by NVD
48References, 2 tagged exploit
17 Jun 2026Last modified by NVD

Description

GNOME project libxml2 v2.9.10 has a global buffer over-read vulnerability in xmlEncodeEntitiesInternal at libxml2/entities.c. The issue has been fixed in commit 50f06b3e.

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

Affected products

18 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
http://lists.opensuse.org/opensuse-security-announce/2020-09/msg00036.html Mailing ListThird Party Advisory
http://lists.opensuse.org/opensuse-security-announce/2020-09/msg00061.html Mailing ListThird Party Advisory
https://gitlab.gnome.org/GNOME/libxml2/-/commit/50f06b3efb638efb0abd95dc62dca05ae67882c2 PatchVendor Advisory
https://gitlab.gnome.org/GNOME/libxml2/-/issues/178 ExploitIssue TrackingPatchVendor Advisory
https://lists.apache.org/thread.html/rf9fa47ab66495c78bb4120b0754dd9531ca2ff0430f6685ac9b07772%40%3Cdev.mina.apache.org%
https://lists.debian.org/debian-lts-announce/2020/09/msg00009.html Third Party Advisory
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/2NQ5GTDYOVH26PBCPYXXMGW
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/5KTUAGDLEHTH6HU66HBFAFT
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/674LQPJO2P2XTBTREFR5LOZ
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/7KQXOHIE3MNY3VQXEN7LDQU
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/ENEHQIBMSI6TZVS35Y6I4FC
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/H3IQ7OQXBKWD3YP7HO6KCNO
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/J3ICASXZI2UQYFJAOQWHSTN
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/JCHXIWR5DHYO3RSO7RAHEC6
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/O7MEWYKIKMV2SKMGH4IDWVU
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/RIQAMBA2IJUTQG5VOP5LZVI
https://security.gentoo.org/glsa/202107-05 Third Party Advisory
https://security.netapp.com/advisory/ntap-20200924-0001/ Third Party Advisory
https://security.netapp.com/advisory/ntap-20200924-0001/ Third Party Advisory
https://security.netapp.com/advisory/ntap-20200924-0001/ Third Party Advisory
https://security.netapp.com/advisory/ntap-20200924-0001/ Third Party Advisory
https://www.oracle.com/security-alerts/cpuapr2022.html PatchThird Party Advisory
https://www.oracle.com/security-alerts/cpujul2022.html
https://www.oracle.com/security-alerts/cpuoct2021.html PatchThird Party Advisory
http://lists.opensuse.org/opensuse-security-announce/2020-09/msg00036.html Mailing ListThird Party Advisory
http://lists.opensuse.org/opensuse-security-announce/2020-09/msg00061.html Mailing ListThird Party Advisory
https://gitlab.gnome.org/GNOME/libxml2/-/commit/50f06b3efb638efb0abd95dc62dca05ae67882c2 PatchVendor Advisory
https://gitlab.gnome.org/GNOME/libxml2/-/issues/178 ExploitIssue TrackingPatchVendor Advisory
https://lists.apache.org/thread.html/rf9fa47ab66495c78bb4120b0754dd9531ca2ff0430f6685ac9b07772%40%3Cdev.mina.apache.org%
https://lists.debian.org/debian-lts-announce/2020/09/msg00009.html Third Party Advisory
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/2NQ5GTDYOVH26PBCPYXXMGW
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/5KTUAGDLEHTH6HU66HBFAFT
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/674LQPJO2P2XTBTREFR5LOZ
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/7KQXOHIE3MNY3VQXEN7LDQU
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/ENEHQIBMSI6TZVS35Y6I4FC
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/H3IQ7OQXBKWD3YP7HO6KCNO
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/J3ICASXZI2UQYFJAOQWHSTN
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/JCHXIWR5DHYO3RSO7RAHEC6
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/O7MEWYKIKMV2SKMGH4IDWVU
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/RIQAMBA2IJUTQG5VOP5LZVI

Track CVE-2020-24977 inside VULONE

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Source: NIST National Vulnerability Database (record CVE-2020-24977), CISA KEV, FIRST EPSS (scores of 2026-09-29). This page is refreshed as NVD updates the record.