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02 Records

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SRC: CVELISTV5 / SYNC: T-12M / LAG: 31M / REC: 386,250 / REV: C6-1C / V4

01 RecordSTATE: PUBLISHED

CVE-2019-19956

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

HighPUBLISHEDCNA: mitre

CNA base score7.5 CVSS v3.xCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

02 Description

CNA: mitre

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

03 Exploitation and scoring

SRC: CISA, FIRST, NVD, RED HAT

Exploitation

Assessed, none found. CISA's assessment recorded neither public exploit code nor evidence of exploitation when it was made.

SSVC decision

ExploitationnoneCISA recorded no public exploit code and no evidence of exploitation.
AutomatableyesAn attacker can reliably automate reconnaissance through exploitation, so this scales.
Technical ImpactpartialSuccessful exploitation gives limited control of the vulnerable component.

CISA publishes the decision points, not a final SSVC decision. The decision also depends on mission and well-being impact, which is a property of your deployment rather than of the vulnerability.

EPSS probability

5.56% probability of exploitation activity in the next 30 days.

EPSS percentile

Ranks above 92.2% of scored records. A rank, not a probability.

NVD base score

7.5 (CVSS v3.x), scored by the NVD independently of the CNA.

NVD CVSS vector

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

NVD analysis status

Modified. NVD last modified this record on 2026-06-17.

Red Hat severity

Moderate. Red Hat's rating for its own products, not a CVSS rating.

Exploit-prediction scores from FIRST. Independent scoring and analysis status from the NVD. Vendor severity from Red Hat. Exploitation assessment and catalog membership from CISA.

04 Metadata

SCHEMA: 5.2

Published

2019-12-24 15:12Z6 YR AGO

Last updated

2025-12-03 18:29Z9 MO AGO

Reserved

2019-12-24

Assigning CNA

mitre

Record state

PUBLISHED

Severity

High (CVSS 7.5)

CNA CVSS vector

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

Weaknesses

CWE-772Missing Release of Resource after Effective LifetimeBase
CWE-401Missing Release of Memory after Effective LifetimeVariant

Data version

5.2

Document digest

e08ca22ed86574eed0badf573a301a75cc73d2aeb4696411b5c03c5a83d0d6ff

05 Affected products

PAIRS: 16

VendorProductVersionsPlatforms

canonicalubuntu_linuxNot specified—

debiandebian_linuxNot specified—

fedoraprojectfedoraNot specified—

netappactive_iq_unified_managerNot specified—

netappclustered_data_ontapNot specified—

netappclustered_data_ontap_antivirus_connectorNot specified—

netappmanageability_software_development_kitNot specified—

netappontap_select_deploy_administration_utilityNot specified—

netappsteelstore_cloud_integrated_storageNot specified—

oraclereal_user_experience_insightNot specified—

redhatenterprise_linuxNot specified—

redhatjboss_core_servicesNot specified—

redhatjboss_enterprise_web_serverNot specified—

redhatopenshift_doNot specified—

siemenssinema_remote_connect_serverNot specified—

xmlsoftlibxml2Not specified—

06 References

REFS: 12

lists.debian.org[debian-lts-announce] 20191228 [SECURITY] [DLA 2048-1] libxml2 security updatehttps://lists.debian.org/debian-lts-announce/2019/12/msg00032.htmlmailing-listx_refsource_MLIST
usn.ubuntu.comUSN-4274-1https://usn.ubuntu.com/4274-1/vendor-advisoryx_refsource_UBUNTU
lists.fedoraproject.orgFEDORA-2020-0c71c00af4https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/5R55ZR52RMBX24TQTWHCIWKJVRV6YAWI/vendor-advisoryx_refsource_FEDORA
lists.fedoraproject.orgFEDORA-2020-7694e8be73https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/JDPF3AAVKUAKDYFMFKSIQSVVS3EEFPQH/vendor-advisoryx_refsource_FEDORA
lists.opensuse.orgopenSUSE-SU-2020:0681http://lists.opensuse.org/opensuse-security-announce/2020-05/msg00047.htmlvendor-advisoryx_refsource_SUSE
lists.opensuse.orgopenSUSE-SU-2020:0781http://lists.opensuse.org/opensuse-security-announce/2020-06/msg00005.htmlvendor-advisoryx_refsource_SUSE
www.oracle.comhttps://www.oracle.com/security-alerts/cpujul2020.htmlx_refsource_MISC
gitlab.gnome.orghttps://gitlab.gnome.org/GNOME/libxml2/commit/5a02583c7e683896d84878bd90641d8d9b0d0549x_refsource_MISC
security.netapp.comhttps://security.netapp.com/advisory/ntap-20200114-0002/x_refsource_CONFIRM
lists.debian.org[debian-lts-announce] 20200909 [SECURITY] [DLA 2369-1] libxml2 security updatehttps://lists.debian.org/debian-lts-announce/2020/09/msg00009.htmlmailing-listx_refsource_MLIST
cert-portal.siemens.comhttps://cert-portal.siemens.com/productcert/pdf/ssa-292794.pdfx_refsource_CONFIRM
us-cert.cisa.govhttps://us-cert.cisa.gov/ics/advisories/icsa-21-103-08x_refsource_CONFIRM