Is CVE-2019-20838 in the CISA KEV catalog?

No. CVE-2019-20838 is not currently on the CISA Known Exploited Vulnerabilities list.

What is the CVSS severity of CVE-2019-20838?

CVE-2019-20838 has a CVSS v3 base score of 7.5 (HIGH).

What is the EPSS score for CVE-2019-20838?

CVE-2019-20838 has an EPSS score of 2.77% (85th percentile), estimating the probability of exploitation in the next 30 days.

How do I fix CVE-2019-20838?

Upgrade libpcre3 on ubuntu 14.04 to 1:8.31-2ubuntu2.3+esm1 or later. Fixes are available for 3 affected products.

CVE & CISA-KEV Catalog

CVE-2019-20838

HIGHEPSS 85th pctl

7.5

CVSS v3

NVD

Description

libpcre in PCRE before 8.43 allows a subject buffer over-read in JIT when UTF is disabled, and \X or \R has more than one fixed quantifier, a related issue to CVE-2019-20454.

CWE-125Out-of-bounds Read

How to fix

Remediation Available

libpcre3Ubuntu

Fixed in:1:8.31-2ubuntu2.3+esm1USN-5425-1

Fixed in:2:8.38-3.1ubuntu0.1~esm1USN-5425-1

Fixed in:2:8.39-9ubuntu0.1USN-5425-1

Fixed in:2:8.39-12ubuntu0.1USN-5425-1

Fixed in:2:8.39-13ubuntu0.22.04.1USN-5425-1

pcre3Ubuntu

Fixed in:1:8.31-2ubuntu2.3+esm1USN-5425-1

Fixed in:2:8.38-3.1ubuntu0.1~esm1USN-5425-1

Fixed in:2:8.39-9ubuntu0.1USN-5425-1

Fixed in:2:8.39-12ubuntu0.1USN-5425-1

Fixed in:2:8.39-13ubuntu0.22.04.1USN-5425-1

UniversalForwarderWindows application

Affected:9.0.0 9.0.6Fixed in:9.0.6Splunk, Inc.

Affected:8.2.0 8.2.12Fixed in:8.2.12Splunk, Inc.

Remediation is compiled from vendor and distribution security advisories. Always confirm against the linked source for your exact version and platform.

CVSS v3 Vector

Exploitability

Attack VectorNetwork

Attack ComplexityLow

Privileges RequiredNone

User InteractionNone

ScopeUnchanged

Impact

ConfidentialityNone

IntegrityNone

AvailabilityHigh

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

Exploit Intelligence

2.77%probability of exploitation in 30 days

85thpercentile

Elevated risk: more likely to be exploited than 85% of all known CVEs.

References

Patch1

bugs.gentoo.org

Vendor Advisory3

Third-Party Advisory3

Related Vulnerabilities

Other CWE-125 (Out-of-bounds Read) vulnerabilities, ordered by exploit likelihood. View all

CVE	Severity	CVSS	EPSS	Exploited	Fix
CVE-2014-0160	High	7.5	100%	KEV	Fix
CVE-2025-5777	High	7.5	100%	KEV + Ransom	Fix
CVE-2021-4034	High	7.8	95%	KEV	Fix
CVE-2023-21769	High	7.5	92%	-	Fix
CVE-2023-49285	High	8.6	89%	-	Fix
CVE-2020-8794	Critical	9.8	89%	-	Fix

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This product uses NVD data but is not endorsed or certified by the NVD. EPSS scores courtesy of FIRST.org (https://www.first.org/epss). Source: CISA KEV Catalog. Data as of 2024-11-21.