CVE-2019-9169

CRITICALNVD 9.89.8—
EchelonGraph scoreMEDIUM confidence

Score 9.8 from GitHub Security Advisory (severity: CRITICAL) published 2022-05-13. NVD baseline CVSS 9.8; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, nvd
9.8EG
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 5%CVSS: 9.8Exploit: None knownExposed: 0

A fix is available — apply it.

In the GNU C Library (aka glibc or libc6) through 2.29, proceed_next_node in posix/regexec.c has a heap-based buffer over-read via an attempted case-insensitive regular-expression match.

CVSS v3
9.8
EG Score
9.8(medium)
EG Risk
50(Track)
EG Risk 50/100SSVC: 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
Severity98% × 45%
Exploitation5% × 40%
Automatability30% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
5%
EPSS %ILE
91%
KEV
Not listed

Published

February 26, 2019

Last Modified

November 21, 2024

Advisory Details (7)

Auto-updated Aug 16, 2026
No patch confirmed yet.
generic

myF5

https://support.f5.com/csp/article/K54823184
generic

NetApp Product Security

https://security.netapp.com/advisory/ntap-20190315-0002/
generic

glibc: Multiple vulnerabilities (GLSA 202006-04) — Gentoo security

https://security.gentoo.org/glsa/202006-04
generic

#34142 - AddressSanitizer reported heap-buffer-overflow - GNU bug report logs

https://debbugs.gnu.org/cgi/bugreport.cgi?bug=34142
generic

#34140 - AddressSanitizer reported heap-buffer-overflow when ignoring case - GNU bug report logs

https://debbugs.gnu.org/cgi/bugreport.cgi?bug=34140
generic

SecurityFocus

http://www.securityfocus.com/bid/107160
generic

24114 – (CVE-2019-9169) regexec buffer read overrun in "grep -i '\(\(\)*.\)*\(\)\(\)\1'"

https://sourceware.org/bugzilla/show_bug.cgi?id=24114

Patch Availability(2)

Vendor / EcosystemFixed in / PatchReleasedSource
ubuntunscd (2.27-3ubuntu1.2) @ bionic2026-05-27ubuntu
redhatglibc-0:2.28-151.el82021-05-18redhat

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.

Affected Packages

(4 across 4 ecosystems)
Debian:11(1)
PackageVulnerable rangeFixed inDependents
glibc—2.28-9—
Debian:12(1)
PackageVulnerable rangeFixed inDependents
glibc—2.28-9—
Debian:13(1)
PackageVulnerable rangeFixed inDependents
glibc—2.28-9—
Debian:14(1)
PackageVulnerable rangeFixed inDependents
glibc—2.28-9—

Weakness Classification(1)

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

All Vendor Advisories

(3)

Every vendor that published an advisory referencing this CVE — pulled from our cve_vendor_advisories aggregation. Click any row for the vendor's original advisory page.

Data Freshness Timeline

(refreshed 4× in last 7d / 25× 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 120 total refreshes for this CVE.

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Frequently asked(5)

What is CVE-2019-9169?
CVE-2019-9169 is a critical vulnerability published on February 26, 2019. In the GNU C Library (aka glibc or libc6) through 2.29, proceednextnode in posix/regexec.c has a heap-based buffer over-read via an attempted case-insensitive regular-expression match.
When was CVE-2019-9169 disclosed?
CVE-2019-9169 was first published in the National Vulnerability Database on February 26, 2019, with the most recent update on November 21, 2024. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2019-9169 actively exploited?
CVE-2019-9169 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 5% probability of exploitation in the next 30 days, which ranks it in the top 8.9% of all scored CVEs.
What is the CVSS score of CVE-2019-9169?
CVE-2019-9169 has a CVSS v3 base score of 9.8 (NVD).
How do I remediate CVE-2019-9169?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2019-9169, 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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