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Full vulnerability report · 2020
CVE-2019-20907High confidence

In Lib/tarfile.py in Python through 3.8.3, an attacker is able to craft a TAR archive leading to an infinite loop when opened by tarfile.open, because _proc_pax lacks header validation

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 2.99% 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

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

7 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
Alpine v3.23v3.23 · mainpython3Vendor fix publishedAlpine records a security fix at this version. An absent entry does not mean the package is unaffected.3.8.5-r0Alpine Security Database ↗Source updated 23 Oct 2026
Alpine v3.22v3.22 · mainpython3Vendor fix publishedAlpine records a security fix at this version. An absent entry does not mean the package is unaffected.3.8.5-r0Alpine Security Database ↗Source updated 23 Oct 2026
Alpine v3.21v3.21 · mainpython3Vendor fix publishedAlpine records a security fix at this version. An absent entry does not mean the package is unaffected.3.8.5-r0Alpine Security Database ↗Source updated 23 Oct 2026
Debian trixietrixie · sourcepypy3Vendor fix publishedDebian records a fixed source-package version for this release.7.3.3+dfsg-1Debian Security Tracker ↗Source updated 23 Oct 2026
Debian bookwormbookworm · sourcepypy3Vendor fix publishedDebian records a fixed source-package version for this release.7.3.3+dfsg-1Debian Security Tracker ↗Source updated 23 Oct 2026
Debian forkyforky · sourcepypy3Vendor fix publishedDebian records a fixed source-package version for this release.7.3.3+dfsg-1Debian Security Tracker ↗Source updated 23 Oct 2026
Debian sidsid · sourcepypy3Vendor fix publishedDebian records a fixed source-package version for this release.7.3.3+dfsg-1Debian 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
SSA-398330 · CSAF 2.0 · revision 19 · interimSiemens ProductCERTCVE-2019-20907
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
In Lib/tarfile.py in Python through 3.8.3, an attacker is able to craft a TAR archive leading to an infinite loop when opened by tarfile.open, because _proc_pax lacks header validation.
Remediation
Update to V3.1.5 or later version
CVE-2019-20907 · CSAF 2.0 · revision 3 · finalRed Hat Product Securitypython: infinite loop in the tarfile module via crafted TAR archive
9 known affected

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

  • python.src as a component of Red Hat Enterprise Linux 5
  • python as a component of Red Hat Enterprise Linux 6
  • python-devel as a component of Red Hat Enterprise Linux 6
  • python-libs as a component of Red Hat Enterprise Linux 6
  • python-test as a component of Red Hat Enterprise Linux 6
  • python-tools as a component of Red Hat Enterprise Linux 6
  • python.src as a component of Red Hat Enterprise Linux 6
  • tkinter as a component of Red Hat Enterprise Linux 6
  • python27.src as a component of Red Hat Quay 3
Summary
A flaw was found in python. In Lib/tarfile.py an attacker is able to craft a TAR archive leading to an infinite loop when opened by tarfile.open, because _proc_pax lacks header validation.
Remediation
For details on how to apply this update, which includes the changes described in this advisory, 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-2019-11441

No EUVD known-exploited evidence

In Lib/tarfile.py in Python through 3.8.3, an attacker is able to craft a TAR archive leading to an infinite loop when opened by tarfile.open, because _proc_pax lacks header validation.

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
5.5 · 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

In Lib/tarfile.py in Python through 3.8.3, an attacker is able to craft a TAR archive leading to an infinite loop when opened by tarfile.open, because _proc_pax lacks header validation.

What

In Lib/tarfile.py in Python through 3.8.3, an attacker is able to craft a TAR archive leading to an infinite loop when opened by tarfile.open, because _proc_pax lacks header validation.

Why

A malformed condition prevents a loop from making progress or terminating, allowing resource exhaustion.

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

In Lib/tarfile.py in Python through 3.8.3, an attacker is able to craft a TAR archive leading to an infinite loop when opened by tarfile.open, because _proc_pax lacks header validation.

Why

A malformed condition prevents a loop from making progress or terminating, allowing resource exhaustion.

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 → Loop with Unreachable Exit Condition ('Infinite Loop') → 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-835 ↗

CWE-835: Loop with Unreachable Exit Condition ('Infinite Loop'). The product contains an iteration or loop with an exit condition that cannot be reached, i.e., an infinite loop.

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-835
A

Official authority intelligence

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

ENISA EUVD · EUVD-2019-11441Official EUVD mapping

In Lib/tarfile.py in Python through 3.8.3, an attacker is able to craft a TAR archive leading to an infinite loop when opened by tarfile.open, because _proc_pax lacks header validation.

Official EUVD record ↗
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-2023-1298Python: Schwachstelle ermöglicht Denial of Service

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

Official advisory ↗
Cyber Security Agency of Singapore · English · CSA-SB-20200715Security Bulletin 15 Jul 2020

The Cyber Security Agency of Singapore included this CVE in its official Security Bulletin 15 Jul 2020, published on 15 July 2020. Open the linked bulletin for the product, severity and reference information published in that issue.

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

In Lib/tarfile.py in Python through 3.8.3, an attacker is able to craft a TAR archive leading to an infinite loop when opened by tarfile.open, because _proc_pax lacks header validation.

Official advisory ↗
CERT-FR · French · CERTFR-2026-AVI-0395Multiples vulnérabilités dans les produits IBM

d?id=CVE-2018-20060 Référence CVE CVE-2018-20852 https://www.cve.org/CVERecord?id=CVE-2018-20852 Référence CVE CVE-2019-11236 https://www.cve.org/CVERecord?id=CVE-2019-11236 Référence CVE CVE-2019-11324 https://www.cve.org/CVERecord?id=CVE-2019-11324 Référence CVE CVE-2019-11340 https://www.cve.org/CVERecord?id=CVE-2019-11340 Référence CVE CVE-2019-16056 https://www.cve.org/CVERecord?id=CVE-2019-16056 Référence CVE CVE-2019-16935 https://www.cve.org/CVERecord?id=CVE-2019-16935 Référence CVE CVE-2019-18874 https://www.cve.org/CVERecord?id=CVE-2019-18874 Référence CVE CVE-2019-20477 https://www.cve.org/CVERecord?id=CVE-2019-20477 Référence CVE CVE-2019-20907 https://www.cve.org/CVERecord?id=CVE-2019-20907 Référence CVE CVE-2019-20916 https://www.cve.org/CVERecord?id=CVE-2019-20916 Référence CVE CVE-2019-7164 https://www.cve.org/CVERecord?id=CVE-2019-7164 Référence CVE CVE-2019-7548 https://www.cve.org/CVERecord?id=CVE-2019-7548 Référence CVE CVE-2019-9636 https://www.cve.org/CVERecord?id=CVE-2019-9636 Référence CVE CVE-2019-9740 https://www.cve.org/CVERecord?id=CVE-2019-9740 Référence CVE CVE-2019-9947 https://www.cve.org/CVERecord?id=CVE-2019-9947 Référence CVE CVE-2019-9948 https://www.cve.org/CVERecord?id=CVE-2019-9948 Référence CVE CVE-2020-10735 https://www.cve.org/CVERecord?id=CVE-2020-107

Official advisory ↗
CERT-FR · French · CERTFR-2026-AVI-0050Multiples vulnérabilités dans les produits Juniper Networks

E-2026-21918 Bulletin de sécurité Juniper Networks CVE-2026-21920 du 14 janvier 2026 https://supportportal.juniper.net/s/article/2026-01-Security-Bulletin-Junos-OS-SRX-Series-If-a-specific-request-is-processed-by-the-DNS-subsystem-flowd-will-crash-CVE-2026-21920 Bulletin de sécurité Juniper Networks CVE-2026-21921 du 14 janvier 2026 https://supportportal.juniper.net/s/article/2026-01-Security-Bulletin-Junos-OS-and-Junos-OS-Evolved-When-telemetry-collectors-are-frequently-subscribing-and-unsubscribing-to-sensors-chassisd-or-rpd-will-crash-CVE-2026-21921 Référence CVE CVE-2015-20107 https://www.cve.org/CVERecord?id=CVE-2015-20107 Référence CVE CVE-2019-20907 https://www.cve.org/CVERecord?id=CVE-2019-20907 Référence CVE CVE-2020-26116 https://www.cve.org/CVERecord?id=CVE-2020-26116 Référence CVE CVE-2020-8492 https://www.cve.org/CVERecord?id=CVE-2020-8492 Référence CVE CVE-2021-3177 https://www.cve.org/CVERecord?id=CVE-2021-3177 Référence CVE CVE-2021-3733 https://www.cve.org/CVERecord?id=CVE-2021-3733 Référence CVE CVE-2021-3737 https://www.cve.org/CVERecord?id=CVE-2021-3737 Référence CVE CVE-2021-4189 https://www.cve.org/CVERecord?id=CVE-2021-4189 Référence CVE CVE-2022-45061 https://www.cve.org/CVERecord?id=CVE-2022-45061 Référence CVE CVE-2024-50302 https://www.cve.org/CVERecord?id=CVE-2024-5

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

d?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=CVE-2019-3855 Référence CVE CVE-2019-3856 https://www.cve.org/CVERecord?id=CVE-2019-3856 Référence CVE CVE-2019-3857 https://www.cve.org/CVERecord?id=CVE-2019-3857 Référence CVE CVE-2019-3858 https://www.cve.org/CVERecord?id=CVE-2019-3858 Référence CVE CVE-2019-3859 https://www.cve.org/CVERecord?id=CVE-2019-3859 Référence CVE CVE-2019-3860 https://www.cve.org/CVERecord?id=CVE-2019-3860 Référence CVE CVE-2019-3861 https://www.cve.org/CVERecord?id=CVE-2019-3861

Official advisory ↗
CERT-FR · French · CERTFR-2022-AVI-267Multiples vulnérabilités dans Juniper Networks Junos Space

d?id=CVE-2019-19767 Référence CVE CVE-2019-19807 https://www.cve.org/CVERecord?id=CVE-2019-19807 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-2019-20382 https://www.cve.org/CVERecord?id=CVE-2019-20382 Référence CVE CVE-2019-20386 https://www.cve.org/CVERecord?id=CVE-2019-20386 Référence CVE CVE-2019-20485 https://www.cve.org/CVERecord?id=CVE-2019-20485 Référence CVE CVE-2019-20636 https://www.cve.org/CVERecord?id=CVE-2019-20636 Référence CVE CVE-2019-20811 https://www.cve.org/CVERecord?id=CVE-2019-20811 Référence CVE CVE-2019-20907 https://www.cve.org/CVERecord?id=CVE-2019-20907 Référence CVE CVE-2019-3820 https://www.cve.org/CVERecord?id=CVE-2019-3820 Référence CVE CVE-2019-3840 https://www.cve.org/CVERecord?id=CVE-2019-3840 Référence CVE CVE-2019-3890 https://www.cve.org/CVERecord?id=CVE-2019-3890 Référence CVE CVE-2019-3901 https://www.cve.org/CVERecord?id=CVE-2019-3901 Référence CVE CVE-2019-5010 https://www.cve.org/CVERecord?id=CVE-2019-5010 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-2019-5953 https://www.cve.org/CVERecord?id=CVE-2019-5953 R

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

d?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-2019-8675 Référence CVE CVE-2019-8696 https://www.cve.org/CVERecord?id=CVE-2019-8696 Référence CVE CVE-2020-10543 https://www.cve.org/CVERecord?id=CVE-2020-10543 Référence CVE CVE-2020-10878 https://www.cve.org/CVERecord?id=CVE-2020-10878 Référence CVE CVE-2020-12243 https://www.cve.org/CVERecord?id=CVE-2020-12243 Référence CVE CVE-2020-12321 https://www.cve.org/CVERecord?id=CVE-20

Official advisory ↗
JVN iPedia · Japanese · JVNDB-2020-007807Python における無限ループに関する脆弱性

Python には、無限ループに関する脆弱性が存在します。

Official advisory ↗
NCSC-NL · Dutch · NCSC-2024-0339Kwetsbaarheden verholpen in Microsoft Mariner

De kwetsbaarheden betreffen oudere kwetsbaarheden in diverse subcomponenten van de distro, zoals Python, Emacs, Qemu, Django, Curl, wget etc. welke in de nieuwe versie zijn verholpen.

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 13 Jul 2020 · Last source change 14 Oct 2026, 07:57 UTC · CWE-835 · Loop with Unreachable Exit Condition ('Infinite Loop')

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 2026-08-14
European sourceENISA EUVD · EUVD-2019-11441
Product sourceVendor CSAF · Siemens ProductCERT
Remediation sourceVendor CSAF · Siemens ProductCERT
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: oracle.com/cpujan2021.html; 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: github.com/21454 · patch: oracle.com/cpujan2021.html · 2 more references
    After
    patch: github.com/21454 · patch: oracle.com/cpujan2021.html · remediation: oracle.com/cpujan2021.html · 1 more references
    oracle.com ↗
  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: oracle.com/cpujan2021.html; removed remediation: cert-portal.siemens.com/ssa-398330.html.
    Before
    patch: github.com/21454 · patch: oracle.com/cpujan2021.html · remediation: cert-portal.siemens.com/ssa-398330.html · 1 more references
    After
    patch: github.com/21454 · patch: oracle.com/cpujan2021.html · remediation: oracle.com/cpujan2021.html · 1 more references
    oracle.com ↗
  4. Affected versionsThe structured affected or fixed version information changed.
    Before
    n/a · 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 ↗
  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. Affected versionsThe structured affected or fixed version information changed.
    Before
    SIMATIC S7-1500 CPU 1518-4 PN/DP MFP (6ES7518-4AX00-1AB0); SIMATIC S7-1500 CPU 1518-4 PN/DP MFP (6ES7518-4AX00-1AC0); SIMATIC S7-1500 CPU 1518F-4 PN/DP MFP (6ES7518-4FX00-1AB0); SIMATIC S7-1500 CPU 1518F-4 PN/DP MFP (6ES7518-4FX00-1AC0); SIPLUS S7-1500 CPU 1518-4 PN/DP MFP (6AG1518-4AX00-4AC0)
    After
    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
    Siemens ProductCERT ↗
  7. Vendor guidanceAuthoritative vendor guidance changed: added remediation: oracle.com/cpujan2021.html; removed remediation: cert-portal.siemens.com/ssa-398330.html.
    Before
    patch: github.com/21454 · patch: oracle.com/cpujan2021.html · remediation: cert-portal.siemens.com/ssa-398330.html · 1 more references
    After
    patch: github.com/21454 · patch: oracle.com/cpujan2021.html · remediation: oracle.com/cpujan2021.html · 1 more references
    oracle.com ↗
  8. Affected versionsThe structured affected or fixed version information changed.
    Before
    n/a · Fixed: Update to V3.1.5 or later version
    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.
    CVE.org ↗
  9. 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: Update to V3.1.5 or later version
    Siemens ProductCERT ↗
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-2019-11441↗Siemens ProductCERT security advisory · Siemens SSA-398330↗Patch or update reference↗Vendor advisory↗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-2019-20907 · cve.blacktree.nl