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Full vulnerability report · 2019
CVE-2019-19956High confidence

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

Siemens · SIMATIC S7-1500 CPU 1518-4 PN/DP MFP

Official source article: Siemens SSA-398330 ↗. Check the applicable product and release in the original source.

7.5HighCVSS 3.1
Recommended action
Patch only the product branches with a verified fix

High technical severity; prioritise exposed affected systems while verifying vendor guidance. Verified remediation exists for at least one product or source, but 5 structured product or package states remain unresolved. Apply remediation only to the exact product branch confirmed by its source.

Fix availability varies by product
R
Operational reassessment

Published severity in operational context

Open reassessment dashboard →
Published severityHighOperational priority:High, unchanged from published severity.unchanged

Evidence used

  • No CISA KEV confirmation is currently recorded.
  • The selected CVSS metric records a network-reachable, unauthenticated path with no user interaction.
  • EPSS is 5.63% for the current model date.

Compensating controls

  • Validate the affected product branch and deploy the verified fixed release.
  • Restrict the affected network interface to trusted sources where business-safe.
  • Monitor vendor guidance and exploitation sources for a material change.

Verification

  1. Confirm that the asset runs Siemens SIMATIC S7-1500 CPU 1518-4 PN/DP MFP and falls inside the recorded affected range.
  2. Verify the installed build against the product-specific fixed version after deployment.
  3. Validate exposure, authentication requirements and compensating controls in the actual environment.
  4. Reopen this reassessment when CVSS, KEV, EPSS, exploit evidence or remediation changes.
Mitigation target: Within 30 daysRemediation target: Within 180 days

This automated reassessment organises public evidence. It does not know asset exposure, business impact or control effectiveness and does not replace CVSS or a human risk decision.

Cross-source reconciliation

Remediation availability differs by product scope

Verified remediation exists for at least one product or source, but 5 structured product or package states remain unresolved. Apply remediation only to the exact product branch confirmed by its source.

Distribution package intelligence

Release-specific package status

Debian findings are scoped to the named distribution, release and source package. An absent finding does not mean a package is unaffected.

4 package states
Repository candidate not checked

A published vendor fix does not prove that a matching update is enabled and installable on a particular asset. Confirm the local package candidate before scheduling remediation.

Distribution releaseSource packageVendor stateFixed versionEvidence
Debian trixietrixie · sourcelibxml2Vendor fix publishedDebian records a fixed source-package version for this release.2.9.10+dfsg-2Debian Security Tracker ↗Source updated 23 Oct 2026
Debian bookwormbookworm · sourcelibxml2Vendor fix publishedDebian records a fixed source-package version for this release.2.9.10+dfsg-2Debian Security Tracker ↗Source updated 23 Oct 2026
Debian forkyforky · sourcelibxml2Vendor fix publishedDebian records a fixed source-package version for this release.2.9.10+dfsg-2Debian Security Tracker ↗Source updated 23 Oct 2026
Debian sidsid · sourcelibxml2Vendor fix publishedDebian records a fixed source-package version for this release.2.9.10+dfsg-2Debian Security Tracker ↗Source updated 23 Oct 2026
Direct vendor intelligence

Authoritative vendor CSAF and VEX advisories

Structured product status and remediation from the issuing vendor. Product-state explanations are always visible; large lists can be searched or downloaded.

2 current · 1 archived
CVE-2019-19956 · CSAF 2.0 · revision 47 · interimSUSE Product Security TeamCVE-2019-19956
72 known affected

The vendor explicitly identifies these products as affected by this CVE.

  • libxml2 as component of HPE Helion OpenStack 8
  • libxml2-2 as component of HPE Helion OpenStack 8
  • libxml2-2-32bit as component of HPE Helion OpenStack 8
  • libxml2-doc as component of HPE Helion OpenStack 8
  • libxml2-tools as component of HPE Helion OpenStack 8
  • libxml2 as component of SUSE Linux Enterprise High Performance Computing 12 SP2
  • libxml2-2 as component of SUSE Linux Enterprise High Performance Computing 12 SP2
  • libxml2-2-32bit as component of SUSE Linux Enterprise High Performance Computing 12 SP2
  • libxml2-doc as component of SUSE Linux Enterprise High Performance Computing 12 SP2
  • libxml2-tools as component of SUSE Linux Enterprise High Performance Computing 12 SP2
  • libxml2 as component of SUSE Linux Enterprise High Performance Computing 12 SP4
  • libxml2-2 as component of SUSE Linux Enterprise High Performance Computing 12 SP4
Summary
xmlParseBalancedChunkMemoryRecover in parser.c in libxml2 before 2.9.10 has a memory leak related to newDoc->oldNs.
Remediation
To install this SUSE Security Update use the SUSE recommended installation methods like YaST online_update or "zypper patch".
SSA-398330 · CSAF 2.0 · revision 19 · interimSiemens ProductCERTCVE-2019-19956
5 known affected

The vendor explicitly identifies these products as affected by this CVE.

  • SIMATIC S7-1500 CPU 1518-4 PN/DP MFP (6ES7518-4AX00-1AB0) >= V3.1.0 < V3.1.5
  • SIMATIC S7-1500 CPU 1518-4 PN/DP MFP (6ES7518-4AX00-1AC0) >= V3.1.0 < V3.1.5
  • SIMATIC S7-1500 CPU 1518F-4 PN/DP MFP (6ES7518-4FX00-1AB0) >= V3.1.0 < V3.1.5
  • SIMATIC S7-1500 CPU 1518F-4 PN/DP MFP (6ES7518-4FX00-1AC0) >= V3.1.0 < V3.1.5
  • SIPLUS S7-1500 CPU 1518-4 PN/DP MFP (6AG1518-4AX00-4AC0) >= V3.1.0 < V3.1.5
Summary
xmlParseBalancedChunkMemoryRecover in parser.c in libxml2 before 2.9.10 has a memory leak related to newDoc->oldNs.
Remediation
Update to V3.1.5 or later version
CVE-2019-19956 · CSAF 2.0 · revision 3 · finalRed Hat Product Securitylibxml2: memory leak in xmlParseBalancedChunkMemoryRecover in parser.cNo longer in the provider’s current catalogue
6 known affected

The vendor explicitly identifies these products as affected by this CVE.

  • libxml2.src as a component of Red Hat Enterprise Linux 5
  • libxml2 as a component of Red Hat Enterprise Linux 6
  • libxml2-devel as a component of Red Hat Enterprise Linux 6
  • libxml2-python as a component of Red Hat Enterprise Linux 6
  • libxml2-static as a component of Red Hat Enterprise Linux 6
  • libxml2.src as a component of Red Hat Enterprise Linux 6
Summary
xmlParseBalancedChunkMemoryRecover in parser.c in libxml2 before 2.9.10 has a memory leak related to newDoc->oldNs.
Remediation
Before applying this update, make sure all previously released errata relevant to your system have been applied. For details on how to apply this update, refer to: https://access.redhat.com/articles/11258
Optional official sources

National CERT insights
?CERT means Computer Emergency Response Team; CSIRT is the closely related term Computer Security Incident Response Team.

Choose official national sources for this report. Each advisory shows its original language. Your selection is remembered on this device and included in shared links.

Official European source

ENISA European Vulnerability Database

Official EUVD identifiers, advisory evidence and known-exploited context. Missing fields are not treated as evidence of low risk.

1 current
ENISA EUVD identifier

EUVD-2019-9544

No EUVD known-exploited evidence

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

EUVD state
Present in the current official mapping
Known exploitation
Not present in the current ENISA EUVD known-exploited dataset. This is not proof of no exploitation.
ENISA score
7.5 · CVSS 3.1
Advisory evidence
No linked advisory details stored yet
Recommended actionPatch only the product branches with a verified fix

High technical severity; prioritise exposed affected systems while verifying vendor guidance. Verified remediation exists for at least one product or source, but 5 structured product or package states remain unresolved. Apply remediation only to the exact product branch confirmed by its source.

Fix availability varies by product
01

What, why and how

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

What

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

Why

The product does not release a resource after its effective lifetime has ended, i.e., after the resource is no longer needed.

How

An attacker operating through a network path may attempt exploitation without authentication or user interaction. If successful, the issue may cause the confidentiality, integrity or availability impact described by the vendor.

What

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

Why

The product does not release a resource after its effective lifetime has ended, i.e., after the resource is no longer needed.

How

An attacker operating through a network path may attempt exploitation without authentication or user interaction. If successful, the issue may cause the confidentiality, integrity or availability impact described by the vendor.

02

Exploit reality and attack path

CVSS severity, EPSS forecast probability, public exploit material and CISA-confirmed exploitation are separate signals.

Observed exploitation
?Confirmed exploitation and public exploit material are separate signals. Attacks can occur without public proof-of-concept or exploit code.
No confirmed evidence

No CISA KEV match was present at the last successful refresh. This means no confirmation from that source, not proof of no exploitation.

Public PoC / exploit material
?Confirmed exploitation and public exploit material are separate signals. Attacks can occur without public proof-of-concept or exploit code.
None recorded

No exploit-tagged reference or CISA SSVC proof-of-concept state is currently recorded. Research may still exist outside the structured feeds.

Likely attack path
a network path → Missing Release of Resource after Effective Lifetime → cause the confidentiality, integrity or availability impact described by the vendor
Attack surface
Network
Privileges required
None: unauthenticated exploitation is possible
User interaction
None
Attack complexity
Low: no specialised conditions are recorded
Security boundary
Unchanged: impact remains within the vulnerable component's security authority
Weakness
?CWE means Common Weakness Enumeration: a standard category for the underlying weakness.
CWE-772 ↗

CWE-772: Missing Release of Resource after Effective Lifetime. The product does not release a resource after its effective lifetime has ended, i.e., after the resource is no longer needed.

CVSS vector
?CVSS means Common Vulnerability Scoring System. The vector records the metric values used to calculate technical severity.
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Common Vulnerability Scoring System 3.1: the compact vector below is decoded into plain language.

AVNetworkAttack vector: The vulnerable component can be reached over a network.ACLowAttack complexity: No specialised conditions are required beyond attacker-controlled input.PRNonePrivileges required: The attacker does not need an account or existing privileges.UINoneUser interaction: No action by another user is required.SUnchangedScope: The security impact remains within the vulnerable component's authority.CNoneConfidentiality impact: No direct loss is represented by this metric.INoneIntegrity impact: No direct loss is represented by this metric.AHighAvailability impact: A successful attack can cause a major loss.
Post-exploitation / living off the land
No specific living-off-the-land technique is confirmed in the structured sources. Monitor normal administration tools for activity inconsistent with the affected service's baseline.
NetworkUnauthenticatedCWE-772
A

Official authority intelligence

Only matched European and national findings are included. Language selectors and unavailable sources are omitted.

ENISA EUVD · EUVD-2019-9544Official EUVD mapping

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

Official EUVD record ↗
BSI · German · WID-SEC-2023-1614Tenable Security Nessus Network Monitor: Mehrere Schwachstellen

Ein entfernter, anonymer, authentisierter oder lokaler Angreifer kann mehrere Schwachstellen in Tenable Security Nessus Network Monitor ausnutzen, um beliebigen Code auszuführen, vertrauliche Informationen offenzulegen, einen Denial-of-Service-Zustand auszulösen und Daten zu manipulieren.

Official advisory ↗
BSI · German · WID-SEC-2025-0227IBM QRadar SIEM: Mehrere Schwachstellen

Ein entfernter, authentisierter Angreifer kann mehrere Schwachstellen in IBM QRadar SIEM ausnutzen, um seine Privilegien zu erweitern, Administratorrechte zu erlangen, beliebigen Programmcode auszuführen, Informationen offenzulegen, Dateien zu manipulieren oder Sicherheitsvorkehrungen zu umgehen.

Official advisory ↗
BSI · German · WID-SEC-2024-3380libxml2: Schwachstelle ermöglicht Denial of Service

Ein entfernter, anonymer Angreifer kann eine Schwachstelle in libxml2 ausnutzen, um einen Denial of Service Angriff durchzuführen.

Official advisory ↗
CISA · English · ICSA-23-348-10Siemens SIMATIC S7-1500

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

Official advisory ↗
CERT-FR · French · CERTFR-2023-AVI-1015Multiples vulnérabilités dans les produits Siemens

d?id=CVE-2019-19603 Référence CVE CVE-2019-19645 https://www.cve.org/CVERecord?id=CVE-2019-19645 Référence CVE CVE-2019-19646 https://www.cve.org/CVERecord?id=CVE-2019-19646 Référence CVE CVE-2019-19880 https://www.cve.org/CVERecord?id=CVE-2019-19880 Référence CVE CVE-2019-19906 https://www.cve.org/CVERecord?id=CVE-2019-19906 Référence CVE CVE-2019-19923 https://www.cve.org/CVERecord?id=CVE-2019-19923 Référence CVE CVE-2019-19924 https://www.cve.org/CVERecord?id=CVE-2019-19924 Référence CVE CVE-2019-19925 https://www.cve.org/CVERecord?id=CVE-2019-19925 Référence CVE CVE-2019-19926 https://www.cve.org/CVERecord?id=CVE-2019-19926 Référence CVE CVE-2019-19956 https://www.cve.org/CVERecord?id=CVE-2019-19956 Référence CVE CVE-2019-19959 https://www.cve.org/CVERecord?id=CVE-2019-19959 Référence CVE CVE-2019-20218 https://www.cve.org/CVERecord?id=CVE-2019-20218 Référence CVE CVE-2019-20367 https://www.cve.org/CVERecord?id=CVE-2019-20367 Référence CVE CVE-2019-20388 https://www.cve.org/CVERecord?id=CVE-2019-20388 Référence CVE CVE-2019-20795 https://www.cve.org/CVERecord?id=CVE-2019-20795 Référence CVE CVE-2019-20907 https://www.cve.org/CVERecord?id=CVE-2019-20907 Référence CVE CVE-2019-25013 https://www.cve.org/CVERecord?id=CVE-2019-25013 Référence CVE CVE-2019-3855 https://www.cve.org/CVERecord?id=C

Official advisory ↗
CERT-FR · French · CERTFR-2023-AVI-0499Multiples vulnérabilités dans Tenable Nessus Network Monitor

d?id=CVE-2019-19317 Référence CVE CVE-2019-19603 https://www.cve.org/CVERecord?id=CVE-2019-19603 Référence CVE CVE-2019-19645 https://www.cve.org/CVERecord?id=CVE-2019-19645 Référence CVE CVE-2019-19646 https://www.cve.org/CVERecord?id=CVE-2019-19646 Référence CVE CVE-2019-19880 https://www.cve.org/CVERecord?id=CVE-2019-19880 Référence CVE CVE-2019-19923 https://www.cve.org/CVERecord?id=CVE-2019-19923 Référence CVE CVE-2019-19924 https://www.cve.org/CVERecord?id=CVE-2019-19924 Référence CVE CVE-2019-19925 https://www.cve.org/CVERecord?id=CVE-2019-19925 Référence CVE CVE-2019-19926 https://www.cve.org/CVERecord?id=CVE-2019-19926 Référence CVE CVE-2019-19956 https://www.cve.org/CVERecord?id=CVE-2019-19956 Référence CVE CVE-2019-19959 https://www.cve.org/CVERecord?id=CVE-2019-19959 Référence CVE CVE-2019-20218 https://www.cve.org/CVERecord?id=CVE-2019-20218 Référence CVE CVE-2019-20388 https://www.cve.org/CVERecord?id=CVE-2019-20388 Référence CVE CVE-2019-20838 https://www.cve.org/CVERecord?id=CVE-2019-20838 Référence CVE CVE-2019-5815 https://www.cve.org/CVERecord?id=CVE-2019-5815 Référence CVE CVE-2019-8457 https://www.cve.org/CVERecord?id=CVE-2019-8457 Référence CVE CVE-2019-9936 https://www.cve.org/CVERecord?id=CVE-2019-9936 Référence CVE CVE-2019-9937 https://www.cve.org/CVERecord?id=CVE-201

Official advisory ↗
CERT-FR · French · CERTFR-2022-AVI-663Multiples vulnérabilités dans IBM QRadar

lution Se référer au bulletin de sécurité de l'éditeur pour l'obtention des correctifs (cf. section Documentation). Documentation Bulletin de sécurité IBM 6441625 du 19 juillet 2022 https://www.ibm.com/support/pages/node/6441625 Bulletin de sécurité IBM 6605299 du 19 juillet 2022 https://www.ibm.com/support/pages/node/6605299 Référence CVE CVE-2017-12652 https://www.cve.org/CVERecord?id=CVE-2017-12652 Référence CVE CVE-2018-11782 https://www.cve.org/CVERecord?id=CVE-2018-11782 Référence CVE CVE-2019-11068 https://www.cve.org/CVERecord?id=CVE-2019-11068 Référence CVE CVE-2019-18197 https://www.cve.org/CVERecord?id=CVE-2019-18197 Référence CVE CVE-2019-19956 https://www.cve.org/CVERecord?id=CVE-2019-19956 Référence CVE CVE-2019-20388 https://www.cve.org/CVERecord?id=CVE-2019-20388 Référence CVE CVE-2019-5094 https://www.cve.org/CVERecord?id=CVE-2019-5094 Référence CVE CVE-2019-5188 https://www.cve.org/CVERecord?id=CVE-2019-5188 Référence CVE CVE-2020-7595 https://www.cve.org/CVERecord?id=CVE-2020-7595 Référence CVE CVE-2021-45960 https://www.cve.org/CVERecord?id=CVE-2021-45960 Référence CVE CVE-2021-46143 https://www.cve.org/CVERecord?id=CVE-2021-46143 Référence CVE CVE-2022-22822 https://www.cve.org/CVERecord?id=CVE-2022-22822 Référence CVE CVE-2022-22823 https://www.cve.org/CVERecord?id=CVE-20

Official advisory ↗
CERT-FR · French · CERTFR-2021-AVI-700Multiples vulnérabilités dans les produits IBM

etin de sécurité IBM 6455281 du 13 septembre 2021 https://www.ibm.com/support/pages/node/6455281 Référence CVE CVE-2019-10785 https://www.cve.org/CVERecord?id=CVE-2019-10785 Référence CVE CVE-2019-11719 https://www.cve.org/CVERecord?id=CVE-2019-11719 Référence CVE CVE-2019-12450 https://www.cve.org/CVERecord?id=CVE-2019-12450 Référence CVE CVE-2019-12528 https://www.cve.org/CVERecord?id=CVE-2019-12528 Référence CVE CVE-2019-12749 https://www.cve.org/CVERecord?id=CVE-2019-12749 Référence CVE CVE-2019-14822 https://www.cve.org/CVERecord?id=CVE-2019-14822 Référence CVE CVE-2019-14866 https://www.cve.org/CVERecord?id=CVE-2019-14866 Référence CVE CVE-2019-19956 https://www.cve.org/CVERecord?id=CVE-2019-19956 Référence CVE CVE-2019-20388 https://www.cve.org/CVERecord?id=CVE-2019-20388 Référence CVE CVE-2019-5094 https://www.cve.org/CVERecord?id=CVE-2019-5094 Référence CVE CVE-2019-5188 https://www.cve.org/CVERecord?id=CVE-2019-5188 Référence CVE CVE-2019-5482 https://www.cve.org/CVERecord?id=CVE-2019-5482 Référence CVE CVE-2020-10754 https://www.cve.org/CVERecord?id=CVE-2020-10754 Référence CVE CVE-2020-12049 https://www.cve.org/CVERecord?id=CVE-2020-12049 Référence CVE CVE-2020-12825 https://www.cve.org/CVERecord?id=CVE-2020-12825 Référence CVE CVE-2020-13401 https://www.cve.org/CVERecord?id=CVE-20

Official advisory ↗
CERT-FR · French · CERTFR-2021-AVI-589Multiples vulnérabilités dans Juniper Junos Space Log Collector

d?id=CVE-2019-19062 Référence CVE CVE-2019-19063 https://www.cve.org/CVERecord?id=CVE-2019-19063 Référence CVE CVE-2019-19332 https://www.cve.org/CVERecord?id=CVE-2019-19332 Référence CVE CVE-2019-19447 https://www.cve.org/CVERecord?id=CVE-2019-19447 Référence CVE CVE-2019-19523 https://www.cve.org/CVERecord?id=CVE-2019-19523 Référence CVE CVE-2019-19524 https://www.cve.org/CVERecord?id=CVE-2019-19524 Référence CVE CVE-2019-19530 https://www.cve.org/CVERecord?id=CVE-2019-19530 Référence CVE CVE-2019-19537 https://www.cve.org/CVERecord?id=CVE-2019-19537 Référence CVE CVE-2019-19807 https://www.cve.org/CVERecord?id=CVE-2019-19807 Référence CVE CVE-2019-19956 https://www.cve.org/CVERecord?id=CVE-2019-19956 Référence CVE CVE-2019-20054 https://www.cve.org/CVERecord?id=CVE-2019-20054 Référence CVE CVE-2019-20095 https://www.cve.org/CVERecord?id=CVE-2019-20095 Référence CVE CVE-2019-20388 https://www.cve.org/CVERecord?id=CVE-2019-20388 Référence CVE CVE-2019-20636 https://www.cve.org/CVERecord?id=CVE-2019-20636 Référence CVE CVE-2019-20907 https://www.cve.org/CVERecord?id=CVE-2019-20907 Référence CVE CVE-2019-25013 https://www.cve.org/CVERecord?id=CVE-2019-25013 Référence CVE CVE-2019-5482 https://www.cve.org/CVERecord?id=CVE-2019-5482 Référence CVE CVE-2019-8675 https://www.cve.org/CVERecord?id=CVE

Official advisory ↗
CERT-FR · French · CERTFR-2021-AVI-255Multiples vulnérabilités dans les produits Siemens

cord?id=CVE-2016-4953 Référence CVE CVE-2016-4954 https://www.cve.org/CVERecord?id=CVE-2016-4954 Référence CVE CVE-2019-18339 https://www.cve.org/CVERecord?id=CVE-2019-18339 Référence CVE CVE-2019-18340 https://www.cve.org/CVERecord?id=CVE-2019-18340 Référence CVE CVE-2019-19291 https://www.cve.org/CVERecord?id=CVE-2019-19291 Référence CVE CVE-2019-19296 https://www.cve.org/CVERecord?id=CVE-2019-19296 Référence CVE CVE-2019-19297 https://www.cve.org/CVERecord?id=CVE-2019-19297 Référence CVE CVE-2019-19298 https://www.cve.org/CVERecord?id=CVE-2019-19298 Référence CVE CVE-2019-19299 https://www.cve.org/CVERecord?id=CVE-2019-19299 Référence CVE CVE-2019-19956 https://www.cve.org/CVERecord?id=CVE-2019-19956 Référence CVE CVE-2020-15795 https://www.cve.org/CVERecord?id=CVE-2020-15795 Référence CVE CVE-2020-25243 https://www.cve.org/CVERecord?id=CVE-2020-25243 Référence CVE CVE-2020-25244 https://www.cve.org/CVERecord?id=CVE-2020-25244 Référence CVE CVE-2020-26997 https://www.cve.org/CVERecord?id=CVE-2020-26997 Référence CVE CVE-2020-27009 https://www.cve.org/CVERecord?id=CVE-2020-27009 Référence CVE CVE-2020-27736 https://www.cve.org/CVERecord?id=CVE-2020-27736 Référence CVE CVE-2020-27737 https://www.cve.org/CVERecord?id=CVE-2020-27737 Référence CVE CVE-2020-27738 https://www.cve.org/CVERecord?id=

Official advisory ↗
JVN iPedia · Japanese · JVNDB-2019-013540libxml2 における有効なライフタイム後のリソースの解放の欠如に関する脆弱性

libxml2 には、有効なライフタイム後のリソースの解放の欠如に関する脆弱性が存在します。

Official advisory ↗
03

Patch and workaround

Operational remediation based on structured source evidence.

Status
?Patch availability is based on structured fixed-version fields and authoritative update references. If no fix is verified, check the vendor advisory before making a change.
Fix availability varies by product
Affected
Fixed
Update to V3.1.5 or later version
Action
Use the product-specific evidence above. Patch only products with a verified fixed release, and keep every affected or under-investigation state without a matching fix in the remediation queue.
Workaround
No verified workaround is recorded. If business-safe, reduce exposure to the affected interface and allow only trusted sources until authoritative guidance is available.
04

Evidence and provenance

Published 24 Dec 2019 · Last source change 14 Oct 2026, 07:57 UTC · CWE-772 · Missing Release of Resource after Effective Lifetime

CVE recordCVE.org · 5.2
CVSS sourceNIST NVD
EPSS source
?The date BlackTree first stored a score for this CVE from the daily FIRST EPSS feed.
FIRST · tracked since 2026-09-01
European sourceENISA EUVD · EUVD-2019-9544
Product sourceVendor CSAF · SUSE Product Security Team
Remediation sourceVendor CSAF · SUSE Product Security Team
CWE sourceCISA ADP
NVD statusNVD modified after enrichment

Core structured fields are present and their contributing authorities are shown above.

Material change intelligence

What changed after publication

View recent updates ↗
  1. Vendor guidanceAuthoritative vendor guidance changed: added remediation: gitlab.gnome.org/5a02583c7e683896d84878bd90641d8d9b0d0549; removed patch: cert-portal.siemens.com/ssa-398330.html; removed remediation: cert-portal.siemens.com/ssa-398330.html.
    Before
    patch: cert-portal.siemens.com/ssa-398330.html · patch: gitlab.gnome.org/5a02583c7e683896d84878bd90641d8d9b0d0549 · remediation: cert-portal.siemens.com/ssa-398330.html
    After
    patch: gitlab.gnome.org/5a02583c7e683896d84878bd90641d8d9b0d0549 · remediation: gitlab.gnome.org/5a02583c7e683896d84878bd90641d8d9b0d0549
    gitlab.gnome.org ↗
  2. Affected versionsThe structured affected or fixed version information changed.
    Before
    SIMATIC S7-1500 CPU 1518-4 PN/DP MFP: V3.1.0 < V3.1.5; SIMATIC S7-1500 CPU 1518F-4 PN/DP MFP: V3.1.0 < V3.1.5; SIPLUS S7-1500 CPU 1518-4 PN/DP MFP: V3.1.0 < V3.1.5 · Fixed: Update to V3.1.5 or later version
    After
    SIMATIC S7-1500 CPU 1518-4 PN/DP MFP: V3.1.0 < V3.1.5; SIMATIC S7-1500 CPU 1518F-4 PN/DP MFP: V3.1.0 < V3.1.5; SIPLUS S7-1500 CPU 1518-4 PN/DP MFP: V3.1.0 < V3.1.5 · Fixed: An authoritative update reference is available, but the fixed version is not recorded in the structured CVE fields. Check the linked vendor advisory for the applicable release.
    Other authority ↗
  3. Vendor guidanceAuthoritative vendor guidance changed: added remediation: gitlab.gnome.org/5a02583c7e683896d84878bd90641d8d9b0d0549; removed remediation: access.redhat.com/CVE-2019-19956.
    Before
    patch: gitlab.gnome.org/5a02583c7e683896d84878bd90641d8d9b0d0549 · remediation: access.redhat.com/CVE-2019-19956
    After
    patch: gitlab.gnome.org/5a02583c7e683896d84878bd90641d8d9b0d0549 · remediation: gitlab.gnome.org/5a02583c7e683896d84878bd90641d8d9b0d0549
    gitlab.gnome.org ↗
  4. Affected versionsThe structured affected or fixed version information changed.
    Before
    n/a · Fixed: Before applying this update, make sure all previously released errata relevant to your system have been applied. For details on how to apply this update, refer to: https://access.redhat.com/articles/11258
    After
    SIMATIC S7-1500 CPU 1518-4 PN/DP MFP: V3.1.0 < V3.1.5; SIMATIC S7-1500 CPU 1518F-4 PN/DP MFP: V3.1.0 < V3.1.5; SIPLUS S7-1500 CPU 1518-4 PN/DP MFP: V3.1.0 < V3.1.5 · Fixed: An authoritative update reference is available, but the fixed version is not recorded in the structured CVE fields. Check the linked vendor advisory for the applicable release.
    Other authority ↗
  5. Affected versionsThe structured affected or fixed version information changed.
    Before
    SIMATIC S7-1500 CPU 1518-4 PN/DP MFP: V3.1.0 < V3.1.5; SIMATIC S7-1500 CPU 1518F-4 PN/DP MFP: V3.1.0 < V3.1.5; SIPLUS S7-1500 CPU 1518-4 PN/DP MFP: V3.1.0 < V3.1.5 · Fixed: An authoritative update reference is available, but the fixed version is not recorded in the structured CVE fields. Check the linked vendor advisory for the applicable release.
    After
    SIMATIC S7-1500 CPU 1518-4 PN/DP MFP: V3.1.0 < V3.1.5; SIMATIC S7-1500 CPU 1518F-4 PN/DP MFP: V3.1.0 < V3.1.5; SIPLUS S7-1500 CPU 1518-4 PN/DP MFP: V3.1.0 < V3.1.5 · Fixed: Update to V3.1.5 or later version
    Siemens ProductCERT ↗
  6. Vendor guidanceAuthoritative vendor guidance changed from remediation: access.redhat.com/CVE-2019-19956 to advisory no longer present in the provider's current catalogue.
    Before
    remediation: access.redhat.com/CVE-2019-19956
    After
    advisory no longer present in the provider's current catalogue
    Red Hat Product Security ↗
  7. Affected versionsThe structured affected or fixed version information changed.
    Before
    n/a · Fixed: An authoritative update reference is available, but the fixed version is not recorded in the structured CVE fields. Check the linked vendor advisory for the applicable release.
    After
    n/a · Fixed: Before applying this update, make sure all previously released errata relevant to your system have been applied. For details on how to apply this update, refer to: https://access.redhat.com/articles/11258
    Red Hat Product Security ↗
  8. ENISA EUVD mappingEUVD-2019-9544 was added to the official ENISA EUVD mapping for this CVE.
    Before
    not recorded
    After
    {"euvdId":"EUVD-2019-9544"}
    ENISA EUVD ↗
  9. Vendor guidanceAuthoritative vendor guidance changed: added patch: gitlab.gnome.org/5a02583c7e683896d84878bd90641d8d9b0d0549; added remediation: gitlab.gnome.org/5a02583c7e683896d84878bd90641d8d9b0d0549; removed vendor advisory: lists.fedoraproject.org/5R55ZR52RMBX24TQTWHCIWKJVRV6YAWI; removed vendor advisory: lists.fedoraproject.org/JDPF3AAVKUAKDYFMFKSIQSVVS3EEFPQH; 3 further removals.
    Before
    vendor advisory: lists.fedoraproject.org/5R55ZR52RMBX24TQTWHCIWKJVRV6YAWI · vendor advisory: lists.fedoraproject.org/JDPF3AAVKUAKDYFMFKSIQSVVS3EEFPQH · vendor advisory: lists.opensuse.org/msg00005.html · 2 more references
    After
    patch: gitlab.gnome.org/5a02583c7e683896d84878bd90641d8d9b0d0549 · remediation: gitlab.gnome.org/5a02583c7e683896d84878bd90641d8d9b0d0549
    gitlab.gnome.org ↗
  10. Affected versionsThe structured affected or fixed version information changed.
    Before
    n/a · Fixed: No fixed version is explicitly recorded in the structured CVE data.
    After
    n/a · Fixed: An authoritative update reference is available, but the fixed version is not recorded in the structured CVE fields. Check the linked vendor advisory for the applicable release.
    CNA ↗
  11. Remediation statusRemediation status changed from Awaiting fix to Patch available.
    Before
    Awaiting fix
    After
    Patch available
    gitlab.gnome.org ↗
  12. CVSS scoreCVSS scoring authority changed from CISA ADP to NIST NVD; the displayed base score remained 7.5.
    Before
    7.5 (CVSS 3.1 · CISA ADP · CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H)
    After
    7.5 (CVSS 3.1 · NIST NVD · CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H)
    NIST NVD ↗
  13. Catalogue recordCVE added to the BlackTree catalogue.
    CNA ↗
Material fields only · duplicate refreshes suppressed · history retained for the configured operational retention period
CVE published
Fixed release or patch reference recorded
Fixed release recorded from official guidance
ENISA EUVD · EUVD-2019-9544↗Vendor CSAF · SUSE Product Security Team↗Siemens ProductCERT security advisory · Siemens SSA-398330↗Patch or update reference↗CVE authority or vendor reference↗Official CVE record (CNA and ADP data)↗NVD record↗
Technical terms and abbreviations used in this report
CVE
Common Vulnerabilities and Exposures: the public identifier for one disclosed vulnerability.
CVSS
Common Vulnerability Scoring System: a technical severity framework; it is not patching priority by itself.
EPSS
Exploit Prediction Scoring System: FIRST's estimate of the probability that exploitation activity will be observed in the next 30 days; it is a forecast, not confirmation.
CWE
Common Weakness Enumeration: the standard category describing the underlying software or hardware weakness.
CNA
CVE Numbering Authority: an organisation authorised to assign and publish CVE records.
CISA ADP
Cybersecurity and Infrastructure Security Agency Authorized Data Publisher: structured enrichment added to a CVE record.
NVD
National Vulnerability Database: NIST's enrichment service for CVE records.
CERT / CSIRT
A computer security incident response team that publishes warnings or coordinates incident response.
PoC
Proof of concept: public material that demonstrates or helps reproduce exploitation.
CSAF
Common Security Advisory Framework: a machine-readable format for security advisories.
LoTL
Living off the land: abuse of legitimate tools or system functions during an attack.
Free version - for non-commercial use only.CVE-2019-19956 · cve.blacktree.nl