How many CVEs does GNU C Library have?

GNU C Library has 33 published CVE records since 2019, including 27 in the last two years.

How many GNU C Library CVEs are in CISA KEV?

None of GNU C Library's CVEs are currently listed in CISA's Known Exploited Vulnerabilities catalog.

Which GNU C Library products have the most CVEs?

The GNU C Library products with the most published CVEs are glibc.

What are the most common weakness types in GNU C Library CVEs?

GNU C Library's CVEs most often map to these CWE weakness types: CWE-121 (Stack-based Buffer Overflow), CWE-787 (Out-of-bounds Write), CWE-617 (Reachable Assertion), CWE-835 (Loop with Unreachable Exit Condition ('Infinite Loop')).

How many critical GNU C Library vulnerabilities are there?

GNU C Library has 2 critical and 13 high-severity CVEs.

What is the average severity of GNU C Library CVEs?

The average CVSS base score across GNU C Library's scored CVEs is 6.6.

GNU C Library Vulnerabilities: CVEs, CISA KEV & Security Advisories

Name: GNU C Library vulnerability dataset (CVEs)
Creator: RadicalNotion.AI
License: https://creativecommons.org/licenses/by-nc/4.0/

RadicalNotion.AI

Overview

GNU C Library has 33 published CVE records since 2019, of which 0 are in CISA's Known Exploited Vulnerabilities catalog and 14 have a known public exploit. The average CVSS base score across scored CVEs is 6.6.

Security scorecard

A quick read on GNU C Library's vulnerability posture, as a share of its 33 published CVEs.

Average CVSS: 6.6
Critical / high: 45%
Actively exploited (KEV): 0%
Public exploit available: 42%
Patch available: 100%

Severity and exploitation

How the CVSS severity of GNU C Library's CVEs breaks down, plus how many are exploited in the wild or have public exploit code.

Critical2

High13

Medium16

Low2

In CISA’s Known Exploited Vulnerabilities catalog

None of GNU C Library's CVEs are currently listed in CISA's KEV catalog.

Public exploits

14 of GNU C Library's CVEs have a known public exploit available.

Most affected products

The GNU C Library products with the most published CVEs. Follow any product to browse its versions and vulnerabilities.

glibc33 CVEs

Common weakness types

The CWE weakness categories most often found in GNU C Library CVEs. Follow any weakness for its full explanation.

CNAs that assign these CVEs

The CVE Numbering Authorities that publish GNU C Library CVE records.

Disclosure activity by year

How many GNU C Library CVEs were published each year.

2019

2024

2025

2026

Latest GNU C Library CVEs

The most recently disclosed vulnerabilities affecting GNU C Library.

One-byte overread in strncasecmp on Power8
CWE-126
Low · CVSS 3.7
EPSS 0.3%2026-09-28
AT_SECURE program buffer overflow via $ORIGIN processing
CWE-121
Low · CVSS 3.6
EPSS 0.1%2026-09-22
AT_SECURE programs may load attacker-controlled code via $ORIGIN
CWE-367
Medium · CVSS 6.3
EPSS 0.1%2026-09-22
Assertion failure in the DNS stub resolver with a long search domain

Other vendors

CVE counts for other vendors.

microsoft41,739 CVEs linux25,260 CVEs Google17,495 CVEs Apple15,495 CVEs Oracle13,348 CVEs Debian10,233 CVEs IBM9,452 CVEs Red Hat8,581 CVEs

Browse all vendors

Frequently asked questions

Common questions about GNU C Library vulnerabilities.

How many CVEs does GNU C Library have?: GNU C Library has 33 published CVE records since 2019, including 27 in the last two years.
How many GNU C Library CVEs are in CISA KEV?: None of GNU C Library's CVEs are currently listed in CISA's Known Exploited Vulnerabilities catalog.
Which GNU C Library products have the most CVEs?: The GNU C Library products with the most published CVEs are glibc.
What are the most common weakness types in GNU C Library CVEs?: GNU C Library's CVEs most often map to these CWE weakness types: CWE-121 (Stack-based Buffer Overflow), CWE-787 (Out-of-bounds Write), CWE-617 (Reachable Assertion), CWE-835 (Loop with Unreachable Exit Condition ('Infinite Loop')).
Are there public exploits for GNU C Library vulnerabilities?: Yes — 14 of GNU C Library's CVEs have a known public exploit.
How many critical GNU C Library vulnerabilities are there?: GNU C Library has 2 critical and 13 high-severity CVEs.
What is the average severity of GNU C Library CVEs?: The average CVSS base score across GNU C Library's scored CVEs is 6.6.

References

Vulnerability data is sourced from the CVE Program; severity, KEV, and exploit signals are aggregated by RadicalNotion.AI.

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