CVE-2022-1586

CRITICALNVD 9.19.1—
EchelonGraph scoreMEDIUM confidence

Score 9.1 from GitHub Security Advisory (severity: CRITICAL) published 2022-05-17. NVD baseline CVSS 9.1; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, nvd
9.1
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS: 3%CVSS: 9.1Exploit: NoneExposed: 0

A fix is available — apply it.

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.

CVSS v3
9.1
EG Score
9.1(medium)
EG Risk
47(Track)
EG Risk 47/100SSVC: Track

EG Risk is EchelonGraph's 0–100 priority score: it fuses intrinsic severity with real-world exploitation and automatability so you can rank equal-severity CVEs and fix the most dangerous first. Higher = act sooner. Distinct from the 0–10 EG Score (severity).

How it’s computed
Severity91% × 45%
Exploitation3% × 40%
Automatability30% × 15%
Action: Routine — remediate on your standard cadence.
EPSS
86.8%
KEV
Not listed

Published

May 16, 2022

Last Modified

March 25, 2025

Advisory Details (9)

Auto-updated Jul 23, 2026
Patch available. Sources: redhat, github_commit.
redhat Patch Available

2077976 – (CVE-2022-1586) CVE-2022-1586 pcre2: Out-of-bounds read in compile_xclass_matchingpath in pcre2_jit_compile.c

Affected: Red Hat Enterprise Linux 9

https://bugzilla.redhat.com/show_bug.cgi?id=2077976
generic

NetApp Product Security

https://security.netapp.com/advisory/ntap-20221028-0009/
generic

[SECURITY] Fedora 36 Update: pcre2-10.40-1.fc36 - package-announce - Fedora mailing-lists

https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/M2GLQQUEY5VFM57CFYXVIFOXN2HUZPDM/
generic

[SECURITY] Fedora 35 Update: pcre2-10.40-1.fc35 - package-announce - Fedora mailing-lists

https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/KAX7767BCUFC7JMDGP7GOQ5GIZCAUGBB/
generic

[SECURITY] Fedora 35 Update: mingw-pcre2-10.40-1.fc35 - package-announce - Fedora mailing-lists

https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/JXINO3KKI5DICQ45E2FKD6MKVMGJLEKJ/
generic

[SECURITY] Fedora 36 Update: mingw-pcre2-10.40-1.fc36 - package-announce - Fedora mailing-lists

https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/DWNG2NS3GINO6LQYUVC4BZLUQPJ3DYHA/
generic Patch Available

[SECURITY] [DLA 3363-1] pcre2 security update

https://lists.debian.org/debian-lts-announce/2023/03/msg00014.html
github_commit

commit d4fa336fbcc3 (PCRE2Project/pcre2)

Fix landed in PCRE2Project/pcre2 commit d4fa336fbcc3 — awaiting tagged release

https://github.com/PCRE2Project/pcre2/commit/d4fa336fbcc388f89095b184ba6d99422cfc676c
redhat

Invalid Bug ID

https://bugzilla.redhat.com/show_bug.cgi?id=2077976%2C

Vendor Advisories for CVE-2022-1586(2)

These vendors published their own advisory mentioning this CVE — often with vendor-specific remediation steps + affected product lists not in NVD.

Patch Availability(4)

Vendor / EcosystemFixed in / PatchReleasedSource
ubuntulibpcre2-8-0 (10.31-2ubuntu0.1~esm1) @ bionic2026-05-25ubuntu
ubuntulibpcre2-8-0 (10.39-3ubuntu0.1) @ jammy2026-05-25ubuntu
redhatpcre2-0:10.32-3.el8_62022-08-03redhat
redhatpcre2-0:10.37-5.el9_02022-07-01redhat

Patches are aggregated from vendor advisories (Red Hat, Microsoft, Cisco, GitHub) and package ecosystems (OSV, GHSA). Multiple rows for the same upstream release have been deduplicated.

Weakness Classification(1)

MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.

Additional Vendor Advisories

(3)

Vendors that published advisories for this CVE beyond the curated set above. Broader coverage but minimal per-row detail — click through for the original advisory.

Data Freshness Timeline

(refreshed 12× in last 7d / 47× in last 30d)

Each row is a source pipeline that fetched or updated this CVE on that date, with what changed. For example, "NVD update" means NVD published or revised its analysis for this CVE; "MITRE cvelistV5" means we ingested or refreshed it from the CNA feed. Most recent first.

Showing the most recent 100 of 103 total refreshes for this CVE.

  1. 2026-07-24 14:15 UTCEPSS rescore
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Frequently asked(5)

What is CVE-2022-1586?
CVE-2022-1586 is a critical vulnerability published on May 16, 2022. An out-of-bounds read vulnerability was discovered in the PCRE2 library in the compilexclassmatchingpath() function of the pcre2jitcompile.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…
When was CVE-2022-1586 disclosed?
CVE-2022-1586 was first published in the National Vulnerability Database on May 16, 2022, with the most recent update on March 25, 2025. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2022-1586 actively exploited?
CVE-2022-1586 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 86.8% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.
What is the CVSS score of CVE-2022-1586?
CVE-2022-1586 has a CVSS v3 base score of 9.1 (NVD).
How do I remediate CVE-2022-1586?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2022-1586, EchelonGraph cross-links them in the Vendor Advisories panel below — those typically contain the canonical remediation steps, fixed version numbers, and any vendor-specific mitigations.

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