Is CVE-2019-20838 actively exploited?

CVE-2019-20838 has no public evidence of in-the-wild exploitation as of 2024-11-21.

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

CVE-2019-20838 has a CVSS score of 7.5 (HIGH severity). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H.

How do I patch CVE-2019-20838?

Patch guidance is available from pcre security advisories. CVEDatabase generates AI-assisted remediation guidance on demand for CVE-2019-20838.

Fix CVE-2019-20838 - HIGH pcre pcre

Q: Which products are affected by CVE-2019-20838?

5 products: pcre pcre, apple macos, splunk universal forwarder, splunk universal forwarder, splunk universal forwarder.

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.

CVSS Metrics

Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Attack Vector: network
Complexity: low
Privileges: none
User Action: none
Scope: unchanged
Confidentiality: none
Integrity: none
Availability: high
Weaknesses: CWE-125 · Out-of-bounds Read

Metadata

Primary Vendor: PCRE
Published: 6/15/2020
Last Modified: 11/21/2024
Source: NIST NVD
Note: Verify all details with official vendor sources before applying patches.

Affected Products

pcre : pcreapple : macossplunk : universal_forwardersplunk : universal_forwardersplunk : universal_forwarder

Remediation Guidance

Executive Summary

Cite this page

CVE-2019-20838. CVEDatabase.com. Retrieved 1 May 2026. https://cvedatabase.com/cve/CVE-2019-20838

View on NIST NVD

CVE-2019-20838 vulnerability