CVE-2019-20454

mediumpriority · track · 31EPSS 0.016 · 75 %ileDEEURUUS
grimoire priorityP3 · Track
Exploitable?
—
no known exploitation
Likely / severe?
1.56% (75th) EPSS
CVSS 5 · medium
Is it mine?
23 products
Check your exposure
Who says so?
6 sources
cnnvd · enisa_euvd · fstec_bdu · cert_bund

EPSS · scored 2026-10-27

An out-of-bounds read was discovered in PCRE before 10.34 when the pattern \X is JIT compiled and used to match specially crafted subjects in non-UTF mode. Applications that use PCRE to parse untrusted input may be vulnerable to this flaw, which would allow an attacker to crash the application. The flaw occurs in do_extuni_no_utf in pcre2_jit_compile.c.

01

remediations

Vendor fix, mitigation, or workaround guidance, as published by each source.

A vendor fix is available.

  • Fixedfesto_psirt

    FactoryViews (non-Lite): Upgrade to FactoryViews 1.6.0. See the upgrade guide for information on how to upgrade. FactoryViews Lite: Upgrade to FactoryViews 1.7.0. See the upgrade guide for information on how to upgrade.

02

cvss

Technical severity, 0–10. One row per scoring source.

7.5
010

base score 0–10 · higher = more severe · hover a vector to decode⚠ sources disagree · medium–high · 5–7.5

v2.05mediumAV:N/AC:L/Au:N/C:N/I:N/A:Pprimary · NVD / NIST USexploitability 10 · impact 2.9
v3.17.5highCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:Hprimary · NVD / NIST USexploitability 3.9 · impact 3.6
v3.05.1mediumCVSS:3.0/AC:H/AV:L/A:H/C:N/I:N/PR:N/S:U/UI:Nsecondary · ENISA EU
v3.05.1mediumCVSS:3.0/AV:L/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:Hsecondary · cve@mitre.org USexploitability 1.4 · impact 3.6
v3.16.9mediumCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H/E:Usecondary · CVSS-BT (t0sche)
v3.17.5highCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:Hsecondary · Festo PSIRT DE
v3.17.5highAV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:Hsecondary · FSTEC (BDU) RU
03

weaknesses

The CWE weakness classes this flaw belongs to.

CWE-125USprimaryCWE-125USCWE-125US
04

affected products (23)

Products and version ranges known to be affected.

showing 20 of 23
05

advisories (4)

Vendor and ecosystem advisories describing this.

  • FSA-202302Festo: Several vulnerabilities in FactoryViews2023-07-10csaf · festo_psirtDE

    FactoryViews bundles many third-party applications which are used in background processes to provide the software's features. From time to time, vulnerabilities in these bundled applications are discovered. These are typically fixed in newer versions of FactoryViews by updating the bundled applications. FactoryViews versions up to and including 1.5.2 contain around 200 such vulnerabilities listed in this advisory.Version 1.6.0 is a security rollup release which includes updates to all bundled applications and fixes these vulnerabilities. At this time, FactoryViews Lite cannot be updated beyond version 1.1. FactoryViews 1.7 unifies the non-Lite and Lite versions and fixes these vulnerabilities for users of FactoryViews Lite.

  • WID-SEC-W-2022-0897PCRE (Perl Compatible Regular Expressions): Schwachstelle ermöglicht Denial of ServiceDeutsch2020-02-16csaf · cert_bundDE

    Ein lokaler Angreifer kann eine Schwachstelle in PCRE (Perl Compatible Regular Expressions) ausnutzen, um einen Denial of Service Angriff durchzuführen.

  • WID-SEC-W-2023-2229Splunk Splunk Enterprise: Mehrere SchwachstellenDeutsch2023-08-30csaf · cert_bundDE

    Ein entfernter, authentifizierter Angreifer kann mehrere Schwachstellen in Splunk Splunk Enterprise ausnutzen, um beliebigen Code auszuführen, einen 'Denial of Service'-Zustand zu verursachen, seine Privilegien zu erweitern und weitere, nicht spezifizierte Auswirkungen zu verursachen.

  • WID-SEC-W-2025-0227IBM QRadar SIEM: Mehrere SchwachstellenDeutsch2021-11-30csaf · cert_bundDE

    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.

06

also known as (4)

Other names and identifiers for this entity.

07

sources

Which sources assert this record, and when.

cnnvdenisa_euvdfstec_bducert_bundfesto_psirtnvdNVDCVE.orgMITRE
published 2020-02-14modified 2026-06-17
09

references (56)

External citations — patches, advisories, analysis.

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