# Gnu C Library (glibc) vulnerabilities

Source: https://junglewise.ai/threats/technologies/c-library-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/c-library-glibc.json  
License: CC BY 4.0 with a link back

Junglewise Threat Intelligence has tracked 3 vulnerabilities in Gnu C Library (glibc): 1 in the last 7 days and 3 in the last 90 days, 0 of them critical and 0 exploited in the wild. The most recent, CVE-2026-115819, was published on 11 November 2026. Nothing in the last four weeks, down from 2 vulnerabilities in the four before.

## Counts

- Last 7 days: 1
- Last 30 days: 1
- Last 90 days: 3
- All time: 3 (0 critical, 0 exploited in the wild)

## About Gnu C Library (glibc)

GNU C standard library providing core functions for Linux applications.

## Latest Gnu C Library (glibc) vulnerabilities

- [CVE-2026-115819: GNU C Library wide scanf one-byte buffer overflow](https://junglewise.ai/threats/cve-2026-115819-calling-the-wide-scanf-family-of-functions-swscanf-fwscanf) (medium, CVSS 4.8, published 11 Nov 2026)
- [CVE-2026-86805: GNU C Library dynamic loader privilege escalation via TOCTOU race](https://junglewise.ai/threats/cve-2026-86805-a-time-of-check-to-time-of-use-toctou-race-condition-in-the) (medium, CVSS 6.3, published 22 Sep 2026)
- [CVE-2026-77117: GNU C Library SHIFT_JISX0213 converter hang in iconv](https://junglewise.ai/threats/cve-2026-77117-gnu-c-library-shift-jisx0213-converter-hang-in-iconv) (medium, CVSS 5.9, published 15 Sep 2026)

## Most severe Gnu C Library (glibc) vulnerabilities

- [CVE-2026-86805: GNU C Library dynamic loader privilege escalation via TOCTOU race](https://junglewise.ai/threats/cve-2026-86805-a-time-of-check-to-time-of-use-toctou-race-condition-in-the) (medium, CVSS 6.3, published 22 Sep 2026)
- [CVE-2026-77117: GNU C Library SHIFT_JISX0213 converter hang in iconv](https://junglewise.ai/threats/cve-2026-77117-gnu-c-library-shift-jisx0213-converter-hang-in-iconv) (medium, CVSS 5.9, published 15 Sep 2026)
- [CVE-2026-115819: GNU C Library wide scanf one-byte buffer overflow](https://junglewise.ai/threats/cve-2026-115819-calling-the-wide-scanf-family-of-functions-swscanf-fwscanf) (medium, CVSS 4.8, published 11 Nov 2026)

## Vulnerabilities per week

Nothing in the last four weeks, down from 2 vulnerabilities in the four before.

| 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 | 1 | 0 | 0 |
| 21 Sep 2026 | 1 | 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 | 1 | 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 Glibc](https://junglewise.ai/threats/technologies/glibc): 20 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

## 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 C Library (glibc) vulnerabilities", https://junglewise.ai/threats/technologies/c-library-glibc, 13 November 2026.