Technology · Gnu
Gnu C Library vulnerabilities
Updated . Rebuilt every hour.
Junglewise Threat Intelligence has tracked 9 vulnerabilities in Gnu C Library: 0 in the last 7 days and 8 in the last 90 days, 1 of them critical and 1 exploited in the wild. The most recent, CVE-2026-122054, was published on 4 November 2026. 2 vulnerabilities in the last four weeks, down 50% on the four before (4).
- Last 7 days
- 0
- Last 90 days
- 8
- Critical, all time
- 1
- Exploited in the wild
- 1
About Gnu C Library
Standard C library providing core functions for C programming.
Latest Gnu C Library vulnerabilities
- CVE-2026-122054: GNU C Library BIG-HKSCS character encoding hang on crafted inputmediumCVSS 5.9
- CVE-2026-84243: GNU C Library gettext directory traversal in LANGUAGE variablehighCVSS 7
- CVE-2026-8674: GNU C Library DNS resolver assertion failure in search list parsingmediumCVSS 5.3EPSS 0.3%
- CVE-2026-80489: GNU C Library EUC_JISX0213 converter denial of servicemediumCVSS 5.9EPSS 0.4%
- CVE-2026-19542: GNU C Library tdelete stack-based buffer overflowmediumCVSS 5.6EPSS 0.2%
- CVE-2026-19499: GNU C Library buffer overflow in strfmon right-justificationhighCVSS 7.7EPSS 0.3%
- CVE-2026-89092: GNU C Library nscd stack overflow in DNS cache handlingmediumCVSS 4.2EPSS 0.3%
- CVE-2026-18374: GNU C Library heap buffer overflow in fopen ccs= handlingmediumCVSS 4.9EPSS 0.1%
- CVE-2023-4911: GNU C Library Buffer Overflow Vulnerabilitycriticalexploited in the wildCVSS 7.8
Most severe Gnu C Library vulnerabilities
Exploited in the wild first, then by severity and CVSS score.
- CVE-2023-4911: GNU C Library Buffer Overflow Vulnerabilitycriticalexploited in the wildCVSS 7.8
- CVE-2026-19499: GNU C Library buffer overflow in strfmon right-justificationhighCVSS 7.7EPSS 0.3%
- CVE-2026-84243: GNU C Library gettext directory traversal in LANGUAGE variablehighCVSS 7
- CVE-2026-80489: GNU C Library EUC_JISX0213 converter denial of servicemediumCVSS 5.9EPSS 0.4%
- CVE-2026-122054: GNU C Library BIG-HKSCS character encoding hang on crafted inputmediumCVSS 5.9
- CVE-2026-19542: GNU C Library tdelete stack-based buffer overflowmediumCVSS 5.6EPSS 0.2%
- CVE-2026-8674: GNU C Library DNS resolver assertion failure in search list parsingmediumCVSS 5.3EPSS 0.3%
- CVE-2026-18374: GNU C Library heap buffer overflow in fopen ccs= handlingmediumCVSS 4.9EPSS 0.1%
- CVE-2026-89092: GNU C Library nscd stack overflow in DNS cache handlingmediumCVSS 4.2EPSS 0.3%
Vulnerabilities per week
2 vulnerabilities in the last four weeks, down 50% on the four before (4). The last 13 weeks, by the week each vulnerability was published.
| Week of | Bar | Vulns | Critical |
|---|---|---|---|
| 17 Aug 2026 | 0 | 0 | |
| 24 Aug 2026 | 1 | 0 | |
| 31 Aug 2026 | 0 | 0 | |
| 7 Sep 2026 | 1 | 0 | |
| 14 Sep 2026 | 4 | 0 | |
| 21 Sep 2026 | 0 | 0 | |
| 28 Sep 2026 | 0 | 0 | |
| 5 Oct 2026 | 0 | 0 | |
| 12 Oct 2026 | 0 | 0 | |
| 19 Oct 2026 | 0 | 0 | |
| 26 Oct 2026 | 1 | 0 | |
| 2 Nov 2026 | 1 | 0 | |
| 9 Nov 2026 | 0 | 0 |
Embed a badge
A live badge for a README, a status page or an internal wiki: how many Gnu C Library vulnerabilities were published in the last 7 days and how many of them are critical, refreshed hourly.
[](https://junglewise.ai/threats/technologies/c-library)<a href="https://junglewise.ai/threats/technologies/c-library"><img src="https://junglewise.ai/threats/technologies/c-library/badge.svg" alt="Gnu C Library vulnerabilities" /></a>How this is built
Junglewise Threat Intelligence collects vulnerabilities from NVD, GitHub Security Advisories, OSV, the CISA Known Exploited Vulnerabilities catalog, FIRST EPSS and vendor advisories, and matches each one to the technologies and vendors it affects. Dates are the date a vulnerability was published, in UTC.
The pages are rebuilt from the database every hour. Frozen weekly and monthly reports never change once published, so they can be cited.
Use this data
The same data is at https://junglewise.ai/threats/technologies/c-library.json, and this page as text at https://junglewise.ai/threats/technologies/c-library.md, for scripts and language models. It is free to reuse under CC BY 4.0 with a link back to this page.
Cite as: Junglewise Threat Intelligence, "Gnu C Library vulnerabilities", https://junglewise.ai/threats/technologies/c-library, 13 November 2026.