Technology · X.org
X.org libXfont2 vulnerabilities
Updated . Rebuilt every hour.
Junglewise Threat Intelligence has tracked 5 vulnerabilities in X.org libXfont2: 0 in the last 7 days and 5 in the last 90 days, 2 of them critical and 0 exploited in the wild. The most recent, CVE-2026-59679, was published on 10 September 2026.
- Last 7 days
- 0
- Last 90 days
- 5
- Critical, all time
- 2
- Exploited in the wild
- 0
About X.org libXfont2
The X.Org libXfont2 library provides the core font handling services for the X Window System.
Latest X.org libXfont2 vulnerabilities
- CVE-2026-59679: libXfont2 out-of-bounds heap access in fs_read_glyphs()criticalCVSS 9EPSS 0.4%
- CVE-2026-44950: X.Org libXfont2 heap buffer overflow in fs_read_glyphscriticalCVSS 9EPSS 0.4%
- CVE-2026-56003: X.Org libXfont2 heap buffer overflow in ComputeScaledPropertieshighCVSS 8.5
- CVE-2026-56002: X.Org libXfont2 heap buffer overflow in pcfReadFonthighCVSS 8.5
- CVE-2026-56001: X.Org libXfont2 heap buffer overflow in BitmapScaleBitmapshighCVSS 8.5
Most severe X.org libXfont2 vulnerabilities
Exploited in the wild first, then by severity and CVSS score.
- CVE-2026-44950: X.Org libXfont2 heap buffer overflow in fs_read_glyphscriticalCVSS 9EPSS 0.4%
- CVE-2026-59679: libXfont2 out-of-bounds heap access in fs_read_glyphs()criticalCVSS 9EPSS 0.4%
- CVE-2026-56003: X.Org libXfont2 heap buffer overflow in ComputeScaledPropertieshighCVSS 8.5
- CVE-2026-56002: X.Org libXfont2 heap buffer overflow in pcfReadFonthighCVSS 8.5
- CVE-2026-56001: X.Org libXfont2 heap buffer overflow in BitmapScaleBitmapshighCVSS 8.5
Vulnerabilities per week
The last 13 weeks, by the week each vulnerability was published.
| Week of | Bar | Vulns | Critical |
|---|---|---|---|
| 29 Jun 2026 | 0 | 0 | |
| 6 Jul 2026 | 3 | 0 | |
| 13 Jul 2026 | 0 | 0 | |
| 20 Jul 2026 | 0 | 0 | |
| 27 Jul 2026 | 0 | 0 | |
| 3 Aug 2026 | 0 | 0 | |
| 10 Aug 2026 | 0 | 0 | |
| 17 Aug 2026 | 0 | 0 | |
| 24 Aug 2026 | 0 | 0 | |
| 31 Aug 2026 | 0 | 0 | |
| 7 Sep 2026 | 2 | 2 | |
| 14 Sep 2026 | 0 | 0 | |
| 21 Sep 2026 | 0 | 0 |
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/libxfont2.json, 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, "X.org libXfont2 vulnerabilities", https://junglewise.ai/threats/technologies/libxfont2, 26 September 2026.