# Gnu Glibc vulnerabilities

Source: https://junglewise.ai/threats/technologies/glibc  
Publisher: Junglewise Threat Intelligence, https://junglewise.ai/threats  
Updated: 13 November 2026, 03:07 UTC. Rebuilt every hour.  
Data: https://junglewise.ai/threats/technologies/glibc.json  
License: CC BY 4.0 with a link back

Junglewise Threat Intelligence has tracked 20 vulnerabilities in Gnu Glibc: 0 in the last 7 days and 0 in the last 90 days, 2 of them critical and 1 exploited in the wild. The most recent, CVE-2026-6238, was published on 28 April 2026.

## Counts

- Last 7 days: 0
- Last 30 days: 0
- Last 90 days: 0
- All time: 20 (2 critical, 1 exploited in the wild)

## About Gnu Glibc

Standard C library implementation for GNU/Linux systems providing core libc functions.

## Latest Gnu Glibc vulnerabilities

- [CVE-2026-6238: GNU glibc buffer over-read in DNS debugging functions](https://junglewise.ai/threats/cve-2026-6238-gnu-glibc-buffer-over-read-in-dns-debugging-functions) (medium, CVSS 6.5, published 28 Apr 2026)
- [CVE-2026-5435: GNU glibc out-of-bounds write in ns_printrrf TSIG handling](https://junglewise.ai/threats/cve-2026-5435-gnu-glibc-out-of-bounds-write-in-ns-printrrf-tsig-handling) (high, CVSS 7.3, published 28 Apr 2026)
- [CVE-2026-5928: GNU C Library glibc buffer under-read in ungetwc](https://junglewise.ai/threats/cve-2026-5928-gnu-c-library-glibc-buffer-under-read-in-ungetwc) (high, CVSS 7.5, published 20 Apr 2026)
- [CVE-2026-5450: GNU glibc heap buffer overflow in scanf %mc specifier](https://junglewise.ai/threats/cve-2026-5450-gnu-glibc-heap-buffer-overflow-in-scanf-mc-specifier) (critical, CVSS 9.8, published 20 Apr 2026)
- [CVE-2026-4046: GNU glibc assertion failure in iconv character conversion](https://junglewise.ai/threats/cve-2026-4046-gnu-glibc-assertion-failure-in-iconv-character-conversion) (high, CVSS 7.5, published 30 Mar 2026)
- [CVE-2026-4438: GNU glibc improper input validation in gethostbyaddr](https://junglewise.ai/threats/cve-2026-4438-gnu-glibc-improper-input-validation-in-gethostbyaddr) (medium, CVSS 5.4, published 20 Mar 2026)
- [CVE-2026-4437: GNU glibc DNS specification violation in gethostbyaddr](https://junglewise.ai/threats/cve-2026-4437-gnu-glibc-dns-specification-violation-in-gethostbyaddr) (high, CVSS 7.5, published 20 Mar 2026)
- [CVE-2026-3904: GNU glibc race condition crash in nscd client via memcmp](https://junglewise.ai/threats/cve-2026-3904-gnu-glibc-race-condition-crash-in-nscd-client-via-memcmp) (medium, CVSS 6.2, published 11 Mar 2026)
- [CVE-2025-0395: GNU glibc buffer overflow in assert function failure handling](https://junglewise.ai/threats/cve-2025-0395-gnu-glibc-buffer-overflow-in-assert-function-failure-handling) (medium, CVSS 6.2, published 22 Jan 2025)
- [CVE-2024-33602: GNU glibc memory corruption in nscd netgroup cache](https://junglewise.ai/threats/cve-2024-33602-gnu-glibc-memory-corruption-in-nscd-netgroup-cache) (high, CVSS 7.4, published 6 May 2024)
- [CVE-2024-33601: GNU glibc denial of service in nscd netgroup cache](https://junglewise.ai/threats/cve-2024-33601-gnu-glibc-denial-of-service-in-nscd-netgroup-cache) (high, CVSS 7.3, published 6 May 2024)
- [CVE-2024-33600: GNU glibc null pointer dereference in nscd netgroup cache](https://junglewise.ai/threats/cve-2024-33600-gnu-glibc-null-pointer-dereference-in-nscd-netgroup-cache) (medium, CVSS 5.9, published 6 May 2024)
- [CVE-2024-33599: GNU glibc nscd stack-based buffer overflow in netgroup cache](https://junglewise.ai/threats/cve-2024-33599-gnu-glibc-nscd-stack-based-buffer-overflow-in-netgroup-cache) (high, CVSS 8.1, published 6 May 2024)
- [CVE-2024-2961: GNU glibc buffer overflow in iconv function](https://junglewise.ai/threats/cve-2024-2961-gnu-glibc-buffer-overflow-in-iconv-function) (high, CVSS 7.3, published 17 Apr 2024)
- [CVE-2023-6780: GNU glibc integer overflow in __vsyslog_internal](https://junglewise.ai/threats/cve-2023-6780-gnu-glibc-integer-overflow-in-vsyslog-internal) (medium, CVSS 5.3, published 31 Jan 2024)
- [CVE-2023-6779: GNU glibc heap buffer overflow in __vsyslog_internal](https://junglewise.ai/threats/cve-2023-6779-gnu-glibc-heap-buffer-overflow-in-vsyslog-internal) (high, CVSS 8.2, published 31 Jan 2024)
- [CVE-2023-6246: GNU glibc heap buffer overflow in __vsyslog_internal](https://junglewise.ai/threats/cve-2023-6246-gnu-glibc-heap-buffer-overflow-in-vsyslog-internal) (high, CVSS 8.4, published 31 Jan 2024)
- [CVE-2023-4911: GNU C Library Buffer Overflow Vulnerability](https://junglewise.ai/threats/cve-2023-4911-gnu-c-library-buffer-overflow-vulnerability) (critical, exploited in the wild, CVSS 7.8, published 3 Oct 2023)
- [CVE-2023-4806: GNU glibc use-after-free in getaddrinfo](https://junglewise.ai/threats/cve-2023-4806-gnu-glibc-use-after-free-in-getaddrinfo) (medium, CVSS 5.9, published 18 Sep 2023)
- [CVE-2023-4527: GNU glibc stack read overflow in getaddrinfo](https://junglewise.ai/threats/cve-2023-4527-gnu-glibc-stack-read-overflow-in-getaddrinfo) (medium, CVSS 6.5, published 18 Sep 2023)

## Most severe Gnu Glibc vulnerabilities

- [CVE-2023-4911: GNU C Library Buffer Overflow Vulnerability](https://junglewise.ai/threats/cve-2023-4911-gnu-c-library-buffer-overflow-vulnerability) (critical, exploited in the wild, CVSS 7.8, published 3 Oct 2023)
- [CVE-2026-5450: GNU glibc heap buffer overflow in scanf %mc specifier](https://junglewise.ai/threats/cve-2026-5450-gnu-glibc-heap-buffer-overflow-in-scanf-mc-specifier) (critical, CVSS 9.8, published 20 Apr 2026)
- [CVE-2023-6246: GNU glibc heap buffer overflow in __vsyslog_internal](https://junglewise.ai/threats/cve-2023-6246-gnu-glibc-heap-buffer-overflow-in-vsyslog-internal) (high, CVSS 8.4, published 31 Jan 2024)
- [CVE-2023-6779: GNU glibc heap buffer overflow in __vsyslog_internal](https://junglewise.ai/threats/cve-2023-6779-gnu-glibc-heap-buffer-overflow-in-vsyslog-internal) (high, CVSS 8.2, published 31 Jan 2024)
- [CVE-2024-33599: GNU glibc nscd stack-based buffer overflow in netgroup cache](https://junglewise.ai/threats/cve-2024-33599-gnu-glibc-nscd-stack-based-buffer-overflow-in-netgroup-cache) (high, CVSS 8.1, published 6 May 2024)
- [CVE-2026-4046: GNU glibc assertion failure in iconv character conversion](https://junglewise.ai/threats/cve-2026-4046-gnu-glibc-assertion-failure-in-iconv-character-conversion) (high, CVSS 7.5, published 30 Mar 2026)
- [CVE-2026-5928: GNU C Library glibc buffer under-read in ungetwc](https://junglewise.ai/threats/cve-2026-5928-gnu-c-library-glibc-buffer-under-read-in-ungetwc) (high, CVSS 7.5, published 20 Apr 2026)
- [CVE-2026-4437: GNU glibc DNS specification violation in gethostbyaddr](https://junglewise.ai/threats/cve-2026-4437-gnu-glibc-dns-specification-violation-in-gethostbyaddr) (high, CVSS 7.5, published 20 Mar 2026)
- [CVE-2024-33602: GNU glibc memory corruption in nscd netgroup cache](https://junglewise.ai/threats/cve-2024-33602-gnu-glibc-memory-corruption-in-nscd-netgroup-cache) (high, CVSS 7.4, published 6 May 2024)
- [CVE-2026-5435: GNU glibc out-of-bounds write in ns_printrrf TSIG handling](https://junglewise.ai/threats/cve-2026-5435-gnu-glibc-out-of-bounds-write-in-ns-printrrf-tsig-handling) (high, CVSS 7.3, published 28 Apr 2026)

## Vulnerabilities per week

Nothing was published in the last eight weeks.

| Week of | Vulns | Critical | Exploited |
| --- | --- | --- | --- |
| 17 Aug 2026 | 0 | 0 | 0 |
| 24 Aug 2026 | 0 | 0 | 0 |
| 31 Aug 2026 | 0 | 0 | 0 |
| 7 Sep 2026 | 0 | 0 | 0 |
| 14 Sep 2026 | 0 | 0 | 0 |
| 21 Sep 2026 | 0 | 0 | 0 |
| 28 Sep 2026 | 0 | 0 | 0 |
| 5 Oct 2026 | 0 | 0 | 0 |
| 12 Oct 2026 | 0 | 0 | 0 |
| 19 Oct 2026 | 0 | 0 | 0 |
| 26 Oct 2026 | 0 | 0 | 0 |
| 2 Nov 2026 | 0 | 0 | 0 |
| 9 Nov 2026 | 0 | 0 | 0 |

## Other Gnu technologies

- [Gnu Binutils](https://junglewise.ai/threats/technologies/binutils): 42 vulnerabilities
- [GnuTLS](https://junglewise.ai/threats/technologies/gnutls): 21 vulnerabilities
- [Gnu LibreDWG](https://junglewise.ai/threats/technologies/libredwg): 14 vulnerabilities
- [Gnu Emacs](https://junglewise.ai/threats/technologies/emacs): 10 vulnerabilities
- [GNU tar](https://junglewise.ai/threats/technologies/tar): 10 vulnerabilities
- [Gnu C Library](https://junglewise.ai/threats/technologies/c-library): 9 vulnerabilities
- [Gnu Bash](https://junglewise.ai/threats/technologies/bash): 7 vulnerabilities
- [Gnu Wget](https://junglewise.ai/threats/technologies/wget): 7 vulnerabilities
- [Gnu Cpio](https://junglewise.ai/threats/technologies/cpio): 5 vulnerabilities
- [Gnu Grub2](https://junglewise.ai/threats/technologies/grub2): 5 vulnerabilities
- [Gnu Aspell](https://junglewise.ai/threats/technologies/aspell): 4 vulnerabilities
- [GNU Coreutils](https://junglewise.ai/threats/technologies/coreutils): 4 vulnerabilities

## Sources

NVD, GitHub Security Advisories, OSV, the CISA Known Exploited Vulnerabilities catalog, FIRST EPSS and vendor advisories. Rebuilt every hour. Cite as: Junglewise Threat Intelligence, "Gnu Glibc vulnerabilities", https://junglewise.ai/threats/technologies/glibc, 13 November 2026.