Integer underflow in Freetype before 2.2 allows remote attackers to cause a denial of service (crash) via a font file with an odd number of blue values, which causes the underflow when decrementing by 2 in a context that assumes an even number of values.
CVE-2006-0747
This CVE was only ever scored under CVSS v2.0. NVD CVSS v2.0 base 5.0 — v2 rates that MEDIUM (v2 bands: LOW 0.0–3.9 / MEDIUM 4.0–6.9 / HIGH 7.0–10.0; v2 has no CRITICAL band). Vector AV:N/AC:L/Au:N/C:N/I:N/A:P. CVSS v2 is an older, coarser metric than v3.1/v4.0 (no Scope, no User Interaction, no Attack Requirements), so it is not directly comparable to a v3 or v4 score. NVD has never re-scored this record under v3. EPSS predicts 11.9% exploitation probability in the next 30 days, which is reflected in EG Risk but does not lift the v2 base. Confidence: LOW.
- Lower severity and no public exploit yet
A fix is available — apply it.
- CVSS v2.0 (legacy)
- 5.0MEDIUMNVD never assigned a CVSS v3 rating to this CVE
- EG Score
- 5.0(low)
- EG Risk
- 53(Track)EG Risk 53/100SSVC: Track
EG Risk is EchelonGraph's 0–100 priority score: it fuses intrinsic severity with real-world exploitation and automatability so you can rank equal-severity CVEs and fix the most dangerous first. Higher = act sooner. Distinct from the 0–10 EG Score (severity).
How it’s computedSeverity50% × 45%Exploitation65% × 40%Automatability30% × 15%Action: Routine — remediate on your standard cadence. - EPSS PROB
- 13%
- EPSS %ILE
- 96%
- KEV
- Not listed
Published
May 23, 2006
Last Modified
April 16, 2026
References (58)
- secalert@redhatftp://patches.sgi.com/support/free/security/advisories/20060701-01-U
- secalert@redhathttp://lists.apple.com/archives/security-announce/2009/May/msg00002.html
- secalert@redhathttp://lists.suse.com/archive/suse-security-announce/2006-Jun/0012.html
- secalert@redhathttp://secunia.com/advisories/20525
- secalert@redhathttp://secunia.com/advisories/20591
- secalert@redhathttp://secunia.com/advisories/20638
- secalert@redhathttp://secunia.com/advisories/20791
- secalert@redhathttp://secunia.com/advisories/21062
- secalert@redhathttp://secunia.com/advisories/21135
- secalert@redhathttp://secunia.com/advisories/21385
- secalert@redhathttp://secunia.com/advisories/21701
- secalert@redhathttp://secunia.com/advisories/23939
- secalert@redhathttp://secunia.com/advisories/35074
- secalert@redhathttp://securitytracker.com/id?1016522
- secalert@redhathttp://sunsolve.sun.com/search/document.do?assetkey=1-26-102705-1
Patch Availability(2)
| Vendor / Ecosystem | Fixed in / Patch | Released | Source |
|---|---|---|---|
| ubuntu | libfreetype6 (2.1.7-2.3ubuntu0.1) @ hoary | 2026-05-31 | ubuntu |
| redhat | freetype-0:2.1.9-1.rhel4.4 | 2006-07-18 | redhat |
Patches are aggregated from vendor advisories (Red Hat, Microsoft, Cisco, GitHub) and package ecosystems (OSV, GHSA). Multiple rows for the same upstream release have been deduplicated.
Affected Packages
(6 across 6 ecosystems)
Debian:11(1)
| Package | Vulnerable range | Fixed in | Dependents |
|---|---|---|---|
| freetype | — | 2.2.1-1 | — |
Debian:12(1)
| Package | Vulnerable range | Fixed in | Dependents |
|---|---|---|---|
| freetype | — | 2.2.1-1 | — |
Debian:13(1)
| Package | Vulnerable range | Fixed in | Dependents |
|---|---|---|---|
| freetype | — | 2.2.1-1 | — |
Debian:14(1)
| Package | Vulnerable range | Fixed in | Dependents |
|---|---|---|---|
| freetype | — | 2.2.1-1 | — |
Debian:3.0(1)
| Package | Vulnerable range | Fixed in | Dependents |
|---|---|---|---|
| freetype | 2.0.9-1 | 2.0.9-1woody1 | — |
Debian:3.1(1)
| Package | Vulnerable range | Fixed in | Dependents |
|---|---|---|---|
| freetype | 2.1.7-2.4 | 2.1.7-2.5 | — |
All Vendor Advisories
(2)
Every vendor that published an advisory referencing this CVE — pulled from our cve_vendor_advisories aggregation. Click any row for the vendor's original advisory page.
Data Freshness Timeline
(refreshed 3× in last 7d / 5× in last 30d)
Each row is a source pipeline that fetched or updated this CVE on that date, with what changed. For example, "NVD update" means NVD published or revised its analysis for this CVE; "MITRE cvelistV5" means we ingested or refreshed it from the CNA feed. Most recent first.
- 2026-09-10 09:23 UTCEPSS rescore
- 2026-09-05 15:21 UTCEPSS rescore
- 2026-09-04 04:59 UTCEPSS rescore
- 2026-08-30 01:14 UTCEPSS rescore
- 2026-08-27 13:34 UTCOSV refresh
- 2026-08-11 03:01 UTCOSV refresh
- 2026-08-08 16:30 UTCEPSS rescore
- 2026-08-05 19:11 UTCEPSS rescore
- 2026-08-04 15:03 UTCEPSS rescore
- 2026-07-26 13:28 UTCEG score recompute▲ 5.00
- 2026-07-26 03:23 UTCOSV refresh
- 2026-07-24 14:11 UTCEPSS rescore
- 2026-07-23 00:49 UTCEG score recompute
- 2026-07-23 00:29 UTCEG score recompute
- 2026-07-22 23:53 UTCEG score recompute
- 2026-07-22 21:33 UTCEG score recompute
- 2026-07-20 17:02 UTCEPSS rescore
- 2026-07-18 09:59 UTCEPSS rescore
- 2026-07-16 16:58 UTCEPSS rescore
- 2026-07-15 16:53 UTCEPSS rescore
- 2026-07-15 01:55 UTCEPSS rescore
- 2026-07-13 22:25 UTCEPSS rescore
- 2026-07-13 06:07 UTCEPSS rescore
- 2026-07-13 06:07 UTCEPSS rescore
- 2026-07-11 08:22 UTCEPSS rescore
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- 2026-07-09 19:03 UTCEPSS rescore
- 2026-07-08 22:09 UTCOSV refresh
- 2026-07-04 06:26 UTCEPSS rescore
- 2026-07-02 14:00 UTCEPSS rescore
- 2026-07-01 15:01 UTCEPSS rescore
- 2026-06-27 03:04 UTCEPSS rescore
- 2026-06-25 13:46 UTCEPSS rescore
- 2026-06-24 14:01 UTCEPSS rescore
- 2026-06-24 14:01 UTCEPSS rescore
- 2026-06-23 21:29 UTCEPSS rescore
- 2026-06-23 21:29 UTCEPSS rescore
- 2026-06-22 14:22 UTCEPSS rescore
- 2026-06-21 01:56 UTCEPSS rescore
- 2026-06-20 10:12 UTCOSV refresh
- 2026-06-18 17:49 UTCEPSS rescore
- 2026-06-18 17:49 UTCEPSS rescore
- 2026-06-17 17:49 UTCEPSS rescore
- 2026-06-17 17:49 UTCEPSS rescore
- 2026-06-16 17:49 UTCEPSS rescore
- 2026-06-16 17:49 UTCEPSS rescore
- 2026-06-15 17:44 UTCEPSS rescore
- 2026-06-14 23:13 UTCEPSS rescore
- 2026-06-13 22:56 UTCEPSS rescore
- 2026-06-12 23:08 UTCEPSS rescore
- 2026-06-11 13:55 UTCEPSS rescore
- 2026-06-10 22:14 UTCEPSS rescore
- 2026-06-10 13:17 UTCEPSS rescore
- 2026-06-06 13:44 UTCEPSS rescore
- 2026-06-06 13:44 UTCEPSS rescore
- 2026-06-05 22:43 UTCEPSS rescore
- 2026-06-05 06:07 UTCEPSS rescore
- 2026-06-05 06:07 UTCEPSS rescore
- 2026-06-04 13:09 UTCEPSS rescore
- 2026-06-04 13:09 UTCEPSS rescore
- 2026-06-02 20:10 UTCEPSS rescore
- 2026-06-02 20:10 UTCEPSS rescore
- 2026-06-01 13:49 UTCEPSS rescore
- 2026-06-01 13:49 UTCEPSS rescore
- 2026-06-01 13:49 UTCEPSS rescore
- 2026-05-31 22:28 UTCEPSS rescore
- 2026-05-31 08:32 UTCEG score recompute
- 2026-05-31 08:32 UTCVendor advisory
- 2026-05-31 08:31 UTCGHSA enrichment
- 2026-05-31 00:13 UTCEPSS rescore
- 2026-05-31 00:13 UTCEPSS rescore
- 2026-05-31 00:13 UTCEPSS rescore
- 2026-05-29 13:40 UTCEPSS rescore
- 2026-05-28 20:06 UTCOSV refresh
- 2026-05-28 13:42 UTCEPSS rescore
- 2026-05-28 13:42 UTCEPSS rescore
- 2026-05-22 21:15 UTCEPSS rescore
- 2026-05-22 21:15 UTCEPSS rescore
- 2026-05-21 22:38 UTCEPSS rescore
- 2026-05-20 22:36 UTCEPSS rescore
- 2026-05-20 22:36 UTCEPSS rescore
- 2026-05-20 11:20 UTCEPSS rescore
- 2026-05-20 11:20 UTCEPSS rescore
- 2026-05-18 21:29 UTCEPSS rescore
Publicly available exploits
(1 reference)Working exploit code is in the public domain (1 Exploit-DB entry). Defenders should treat patch urgency accordingly — public PoCs typically lead to mass-exploitation within 24-72 hours.
- Exploit-DBEDB-27992✓ verifiedFirst seen Jun 8, 2006
FreeType - '.TTF' File Remote Buffer Overflow
Open source ↗
Frequently asked(4)
What is CVE-2006-0747?
When was CVE-2006-0747 disclosed?
Is CVE-2006-0747 actively exploited?
How do I remediate CVE-2006-0747?
Dependency Blast Radius
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