CVE-2022-1586

Pcre2 vulnerability

CVSS

9.1

EPSS

3.2%

EPSS pct

87th

Exploited

No known

An out-of-bounds read vulnerability was discovered in the PCRE2 library in the compile_xclass_matchingpath() function of the pcre2_jit_compile.c file. This involves a unicode property matching issue in JIT-compiled regular expressions. The issue occurs because the character was not fully read in case-less matching within JIT.

Affected vendor

Pcre

Affected product

Pcre2

CVSS vector

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

Weakness type (CWE)

CWE-125 — Out-of-bounds Read

Published

2022-05-16

Risk analysis

Based on its CVSS vector, this vulnerability is exploitable over the network, low attack complexity, requiring no privileges, no user interaction. Successful exploitation leads to high impact to confidentiality, high impact to availability.

Its EPSS score of 3.2% reflects a lower probability of exploitation activity in the wild over the next 30 days, placing it above 87% of all scored CVEs.

Check your external exposure to CVE-2022-1586

Confirm whether Pcre Pcre2 is running on any internet-facing host or subdomain.
Match discovered service fingerprints against the version affected by CVE-2022-1586.
Prioritise remediation if the asset is public, business-critical, or near authentication/payment flows.

How ThreatPort helps with CVE-2022-1586

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