High 7.5Published Dec 24, 2019

CVE-2019-19956xmlParseBalancedChunkMemoryRecover in parser.c in libxml2 before 2.9.10 has a memory leak related to newDoc->oldNs.

Updated under an hour ago (2026-10-19 06:10 UTC)

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It affects Siemens SIMATIC S7-1500 CPU 1518-4 PN/DP MFP and 14 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

xmlParseBalancedChunkMemoryRecover in parser.c in libxml2 before 2.9.10 has a memory leak related to newDoc->oldNs.

CVSS: 7.5 HIGH (v3.1, CISA ADP)CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Weakness (CWE): CWE-772
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	before 2.9.10	NVD
debian debian_linux debian:debian_linux	8.0; 9.0	NVD
oracle real_user_experience_insight oracle:real_user_experience_insight	13.3.1.0	NVD
fedoraproject fedora fedoraproject:fedora	30; 32	NVD
canonical ubuntu_linux canonical:ubuntu_linux	12.04; 14.04; 16.04; 18.04; 19.10	NVD
netapp active_iq_unified_manager netapp:active_iq_unified_manager	all versions	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 manageability_software_development_kit netapp:manageability_software_development_kit	all versions	NVD
netapp ontap_select_deploy_administration_utility netapp:ontap_select_deploy_administration_utility	all versions	NVD
netapp steelstore_cloud_integrated_storage netapp:steelstore_cloud_integrated_storage	all versions	NVD
siemens sinema_remote_connect_server siemens:sinema_remote_connect_server	before 3.0	NVD

References

https://lists.debian.org/debian-lts-announce/2019/12/msg00032.htmlmailing-list, x-refsource-mlist, third-party-advisory
https://usn.ubuntu.com/4274-1/vendor-advisory, x-refsource-ubuntu, third-party-advisory
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/5R55ZR52RMBX24TQTWHCIWKJVRV6YAWI/vendor-advisory, x-refsource-fedora
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/JDPF3AAVKUAKDYFMFKSIQSVVS3EEFPQH/vendor-advisory, x-refsource-fedora
http://lists.opensuse.org/opensuse-security-announce/2020-05/msg00047.htmlvendor-advisory, x-refsource-suse, broken-link
http://lists.opensuse.org/opensuse-security-announce/2020-06/msg00005.htmlvendor-advisory, x-refsource-suse, broken-link
https://www.oracle.com/security-alerts/cpujul2020.htmlx-refsource-misc, third-party-advisory
https://gitlab.gnome.org/GNOME/libxml2/commit/5a02583c7e683896d84878bd90641d8d9b0d0549x-refsource-misc, patch, third-party-advisory
https://security.netapp.com/advisory/ntap-20200114-0002/x-refsource-confirm, third-party-advisory
https://lists.debian.org/debian-lts-announce/2020/09/msg00009.htmlmailing-list, x-refsource-mlist, third-party-advisory
https://cert-portal.siemens.com/productcert/pdf/ssa-292794.pdfx-refsource-confirm, third-party-advisory
https://us-cert.cisa.gov/ics/advisories/icsa-21-103-08x-refsource-confirm, third-party-advisory, us-government-resource
https://cert-portal.siemens.com/productcert/html/ssa-292794.html
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.