Medium 6.5Published Sep 3, 2020

CVE-2020-24977GNOME project libxml2 v2.9.10 has a global buffer over-read vulnerability in xmlEncodeEntitiesInternal at libxml2/entities.c.

Updated under an hour ago (2026-10-19 12:10 UTC)

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It affects Siemens SIMATIC S7-1500 CPU 1518-4 PN/DP MFP and 20 other products. Add what you run to find out whether that includes you.

No exploitation reported and no EPSS estimate yet.

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Every CVE for Siemens SIMATIC S7-1500 CPU 1518-4 PN/DP MFP

Exploited in the last 30 days

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: 6.5 MEDIUM (v3.1, NVD)CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:L
Weakness (CWE): Not given
Known exploited: Not in CISA's KEV catalog
EPSS (exploitation in the next 30 days): Not loaded for this CVE
Assigned by: mitre
NVD analysis: Modified
Record last updated: Oct 14, 2026
First seen by InfoSec Signals: Oct 14, 2026

Affected products

Affected products

Siemens SIMATIC S7-1500 CPU 1518-4 PN/DP MFP siemens:simatic_s7_1500_cpu_1518_4_pn_dp_mfp (from the name)	from V3.1.0 before V3.1.5	CISA ADP
Siemens SIMATIC S7-1500 CPU 1518F-4 PN/DP MFP siemens:simatic_s7_1500_cpu_1518f_4_pn_dp_mfp (from the name)	from V3.1.0 before V3.1.5	CISA ADP
Siemens SIPLUS S7-1500 CPU 1518-4 PN/DP MFP siemens:siplus_s7_1500_cpu_1518_4_pn_dp_mfp (from the name)	from V3.1.0 before V3.1.5	CISA ADP
xmlsoft libxml2 xmlsoft:libxml2	2.9.10	NVD
debian debian_linux debian:debian_linux	9.0	NVD
fedoraproject fedora fedoraproject:fedora	31; 32; 33	NVD
opensuse leap opensuse:leap	15.1; 15.2	NVD
netapp active_iq_unified_manager netapp:active_iq_unified_manager	from 7.3; from 9.5	NVD
netapp clustered_data_ontap netapp:clustered_data_ontap	all versions	NVD
netapp clustered_data_ontap_antivirus_connector netapp:clustered_data_ontap_antivirus_connector	all versions	NVD
netapp inventory_collect_tool netapp:inventory_collect_tool	all versions	NVD
netapp manageability_software_development_kit netapp:manageability_software_development_kit	all versions	NVD
netapp snapdrive netapp:snapdrive	all versions; all versions	NVD
netapp hci_h410c_firmware netapp:hci_h410c_firmware	all versions	NVD
oracle communications_cloud_native_core_network_function_cloud_native_environment oracle:communications_cloud_native_core_network_function_cloud_native_environment	1.10.0	NVD
oracle enterprise_manager_base_platform oracle:enterprise_manager_base_platform	13.4.0.0; 13.5.0.0	NVD
oracle enterprise_manager_ops_center oracle:enterprise_manager_ops_center	12.4.0.0	NVD
oracle http_server oracle:http_server	12.2.1.3.0; 12.2.1.4.0	NVD
oracle mysql_workbench oracle:mysql_workbench	through 8.0.26	NVD
oracle peoplesoft_enterprise_peopletools oracle:peoplesoft_enterprise_peopletools	8.58	NVD
oracle real_user_experience_insight oracle:real_user_experience_insight	13.4.1.0; 13.5.1.0	NVD

References

https://gitlab.gnome.org/GNOME/libxml2/-/issues/178x-refsource-misc, exploit, issue-tracking, patch, vendor-advisory
https://lists.debian.org/debian-lts-announce/2020/09/msg00009.htmlmailing-list, x-refsource-mlist, third-party-advisory
http://lists.opensuse.org/opensuse-security-announce/2020-09/msg00036.htmlvendor-advisory, x-refsource-suse, mailing-list, third-party-advisory
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/2NQ5GTDYOVH26PBCPYXXMGW5ZZXWMGZC/vendor-advisory, x-refsource-fedora
http://lists.opensuse.org/opensuse-security-announce/2020-09/msg00061.htmlvendor-advisory, x-refsource-suse, mailing-list, third-party-advisory
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/H3IQ7OQXBKWD3YP7HO6KCNOMLE5ZO2IR/vendor-advisory, x-refsource-fedora
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/O7MEWYKIKMV2SKMGH4IDWVU3ZGJXBCPQ/vendor-advisory, x-refsource-fedora
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/7KQXOHIE3MNY3VQXEN7LDQUJNIHOVHAW/vendor-advisory, x-refsource-fedora
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/JCHXIWR5DHYO3RSO7RAHEC6VJKXD2EH2/vendor-advisory, x-refsource-fedora
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/J3ICASXZI2UQYFJAOQWHSTNWGED3VXOE/vendor-advisory, x-refsource-fedora
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/ENEHQIBMSI6TZVS35Y6I4FCTYUQDLJVP/vendor-advisory, x-refsource-fedora
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/RIQAMBA2IJUTQG5VOP5LZVIZRNCKXHEQ/vendor-advisory, x-refsource-fedora
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/5KTUAGDLEHTH6HU66HBFAFTSQ3OKRAN3/vendor-advisory, x-refsource-fedora
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/674LQPJO2P2XTBTREFR5LOZMBTZ4PZAY/vendor-advisory, x-refsource-fedora
https://lists.apache.org/thread.html/rf9fa47ab66495c78bb4120b0754dd9531ca2ff0430f6685ac9b07772%40%3Cdev.mina.apache.org%3Emailing-list, x-refsource-mlist
https://security.gentoo.org/glsa/202107-05vendor-advisory, x-refsource-gentoo, third-party-advisory
https://www.oracle.com/security-alerts/cpuoct2021.htmlx-refsource-misc, patch, third-party-advisory
https://security.netapp.com/advisory/ntap-20200924-0001/x-refsource-confirm, third-party-advisory
https://gitlab.gnome.org/GNOME/libxml2/-/commit/50f06b3efb638efb0abd95dc62dca05ae67882c2x-refsource-misc, patch, vendor-advisory
https://www.oracle.com/security-alerts/cpuapr2022.htmlx-refsource-misc, patch, third-party-advisory
https://www.oracle.com/security-alerts/cpujul2022.htmlx-refsource-misc
https://cert-portal.siemens.com/productcert/html/ssa-398330.html

The CVE record on cve.org NVD's entry

The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.