CVE-2011-0226 (GCVE-0-2011-0226)
Vulnerability from cvelistv5 – Published: 2011-07-19 22:00 – Updated: 2024-08-06 21:43Summary
Integer signedness error in psaux/t1decode.c in FreeType before 2.4.6, as used in CoreGraphics in Apple iOS before 4.2.9 and 4.3.x before 4.3.4 and other products, allows remote attackers to execute arbitrary code or cause a denial of service (memory corruption and application crash) via a crafted Type 1 font in a PDF document, as exploited in the wild in July 2011.
Severity
No CVSS data available.
CWE
- n/a
Assigner
References
20 references
Date Public
2011-07-08 00:00
Previdian
Known Exploited Vulnerability - GCVE BCP-07 Compliant
KEV entry ID: 718386f4-d62d-4436-94c6-f71f25331e17
Exploited: Yes
Timestamps
First Seen: 2011-07-19
Asserted: 2011-07-19
Scope
Notes: KEVIntel entry: Integer signedness error in psaux/t1decode.c in FreeType before 2.4.6, as used in CoreGraphics in Apple iOS before 4.2.9 and 4.3.x before 4.3.4 and... | Affected: Apple / iOS | CVSS: 9.3 (HIGH) | Used in malware: unknown | Not yet in CISA KEV: True
Evidence
Type: Public Report
Signal: Successful Exploitation
Confidence: 70%
Source: kevintel
Details
| Feed | KEVIntel (kevintel.com) |
|---|---|
| Title | Integer signedness error in psaux/t1decode.c in FreeType before 2.4.6, as used in CoreGraphics in Apple iOS before 4.2.9 and 4.3.x before 4.3.4 and... |
| Vendor | Apple |
| Product | iOS |
| Added Date | 2011-07-19T22:00:00.000Z |
| Cvss Score | 9.3 |
| Epss Score | None |
| Cvss Severity | HIGH |
| Epss Percentile | None |
| Used In Malware | unknown |
| Ahead Of Cisa Kev | None |
| Not Yet In Cisa Kev | True |
References
Created: 2026-06-23 14:04 UTC
| Updated: 2026-07-10 06:14 UTC
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\"93141AB6-26F2-4C6D-95B3-D383EABB4034\"}, {\"vulnerable\": true, \"criteria\": \"cpe:2.3:o:apple:iphone_os:4.3.3:*:*:*:*:*:*:*\", \"matchCriteriaId\": \"4D5C61FF-7CD3-410A-94F2-5DE701466B1F\"}]}]}]",
"descriptions": "[{\"lang\": \"en\", \"value\": \"Integer signedness error in psaux/t1decode.c in FreeType before 2.4.6, as used in CoreGraphics in Apple iOS before 4.2.9 and 4.3.x before 4.3.4 and other products, allows remote attackers to execute arbitrary code or cause a denial of service (memory corruption and application crash) via a crafted Type 1 font in a PDF document, as exploited in the wild in July 2011.\"}, {\"lang\": \"es\", \"value\": \"Error de entero sin signo en psaux/t1decode.c en FreeType anterior a v2.4.6, es usado enCoreGraphics en Apple iOS anterior a v4.2.9 y v4.3.x anterior a v4.3.4 y otros productos, permite a atacantes remotos ejecutar c\\u00f3digo de su elecci\\u00f3n o provocar una denegaci\\u00f3n de servicio (corrupci\\u00f3n de memoria o ca\\u00edda de la aplicaci\\u00f3n) a trav\\u00e9s de una fuente manipulada Type 1 en un documento PDF, como se explot\\u00f3 en Julio 2011.\"}]",
"id": "CVE-2011-0226",
"lastModified": "2024-11-21T01:23:35.317",
"metrics": "{\"cvssMetricV2\": [{\"source\": \"nvd@nist.gov\", \"type\": \"Primary\", \"cvssData\": {\"version\": \"2.0\", \"vectorString\": \"AV:N/AC:M/Au:N/C:C/I:C/A:C\", \"baseScore\": 9.3, \"accessVector\": \"NETWORK\", \"accessComplexity\": \"MEDIUM\", \"authentication\": \"NONE\", \"confidentialityImpact\": \"COMPLETE\", \"integrityImpact\": \"COMPLETE\", \"availabilityImpact\": \"COMPLETE\"}, \"baseSeverity\": \"HIGH\", \"exploitabilityScore\": 8.6, \"impactScore\": 10.0, \"acInsufInfo\": false, \"obtainAllPrivilege\": false, \"obtainUserPrivilege\": false, \"obtainOtherPrivilege\": false, \"userInteractionRequired\": true}]}",
"published": "2011-07-19T22:55:00.820",
"references": "[{\"url\": \"http://lists.apple.com/archives/Security-announce/2011//Oct/msg00003.html\", \"source\": \"product-security@apple.com\"}, {\"url\": \"http://lists.apple.com/archives/security-announce/2011//Jul/msg00000.html\", \"source\": \"product-security@apple.com\", \"tags\": [\"Vendor Advisory\"]}, {\"url\": \"http://lists.apple.com/archives/security-announce/2011//Jul/msg00001.html\", \"source\": \"product-security@apple.com\", \"tags\": [\"Vendor Advisory\"]}, {\"url\": \"http://lists.nongnu.org/archive/html/freetype-devel/2011-07/msg00014.html\", \"source\": \"product-security@apple.com\"}, {\"url\": \"http://lists.nongnu.org/archive/html/freetype-devel/2011-07/msg00015.html\", \"source\": \"product-security@apple.com\"}, {\"url\": \"http://lists.nongnu.org/archive/html/freetype-devel/2011-07/msg00020.html\", \"source\": \"product-security@apple.com\"}, {\"url\": \"http://lists.nongnu.org/archive/html/freetype-devel/2011-07/msg00026.html\", \"source\": \"product-security@apple.com\"}, {\"url\": \"http://lists.nongnu.org/archive/html/freetype-devel/2011-07/msg00028.html\", \"source\": \"product-security@apple.com\"}, {\"url\": \"http://lists.opensuse.org/opensuse-security-announce/2011-07/msg00015.html\", \"source\": \"product-security@apple.com\"}, {\"url\": \"http://lists.opensuse.org/opensuse-security-announce/2011-07/msg00016.html\", \"source\": \"product-security@apple.com\"}, {\"url\": \"http://secunia.com/advisories/45167\", \"source\": \"product-security@apple.com\", \"tags\": [\"Vendor Advisory\"]}, {\"url\": \"http://secunia.com/advisories/45224\", \"source\": \"product-security@apple.com\", \"tags\": [\"Vendor Advisory\"]}, {\"url\": \"http://support.apple.com/kb/HT4802\", \"source\": \"product-security@apple.com\", \"tags\": [\"Vendor Advisory\"]}, {\"url\": \"http://support.apple.com/kb/HT4803\", \"source\": \"product-security@apple.com\", \"tags\": [\"Vendor Advisory\"]}, {\"url\": \"http://support.apple.com/kb/HT5002\", \"source\": \"product-security@apple.com\"}, {\"url\": \"http://www.appleinsider.com/articles/11/07/06/hackers_release_new_browser_based_ios_jailbreak_based_on_pdf_exploit.html\", \"source\": \"product-security@apple.com\"}, {\"url\": \"http://www.debian.org/security/2011/dsa-2294\", \"source\": \"product-security@apple.com\"}, {\"url\": \"http://www.mandriva.com/security/advisories?name=MDVSA-2011:120\", \"source\": \"product-security@apple.com\"}, {\"url\": \"http://www.redhat.com/support/errata/RHSA-2011-1085.html\", \"source\": \"product-security@apple.com\"}, {\"url\": \"http://www.securityfocus.com/bid/48619\", \"source\": \"product-security@apple.com\"}, {\"url\": \"http://lists.apple.com/archives/Security-announce/2011//Oct/msg00003.html\", \"source\": \"af854a3a-2127-422b-91ae-364da2661108\"}, {\"url\": \"http://lists.apple.com/archives/security-announce/2011//Jul/msg00000.html\", \"source\": \"af854a3a-2127-422b-91ae-364da2661108\", \"tags\": [\"Vendor Advisory\"]}, {\"url\": \"http://lists.apple.com/archives/security-announce/2011//Jul/msg00001.html\", \"source\": \"af854a3a-2127-422b-91ae-364da2661108\", \"tags\": [\"Vendor Advisory\"]}, {\"url\": \"http://lists.nongnu.org/archive/html/freetype-devel/2011-07/msg00014.html\", \"source\": \"af854a3a-2127-422b-91ae-364da2661108\"}, {\"url\": \"http://lists.nongnu.org/archive/html/freetype-devel/2011-07/msg00015.html\", \"source\": \"af854a3a-2127-422b-91ae-364da2661108\"}, {\"url\": \"http://lists.nongnu.org/archive/html/freetype-devel/2011-07/msg00020.html\", \"source\": \"af854a3a-2127-422b-91ae-364da2661108\"}, {\"url\": \"http://lists.nongnu.org/archive/html/freetype-devel/2011-07/msg00026.html\", \"source\": \"af854a3a-2127-422b-91ae-364da2661108\"}, {\"url\": \"http://lists.nongnu.org/archive/html/freetype-devel/2011-07/msg00028.html\", \"source\": \"af854a3a-2127-422b-91ae-364da2661108\"}, {\"url\": \"http://lists.opensuse.org/opensuse-security-announce/2011-07/msg00015.html\", \"source\": \"af854a3a-2127-422b-91ae-364da2661108\"}, {\"url\": \"http://lists.opensuse.org/opensuse-security-announce/2011-07/msg00016.html\", \"source\": \"af854a3a-2127-422b-91ae-364da2661108\"}, {\"url\": \"http://secunia.com/advisories/45167\", \"source\": \"af854a3a-2127-422b-91ae-364da2661108\", \"tags\": [\"Vendor Advisory\"]}, {\"url\": \"http://secunia.com/advisories/45224\", \"source\": \"af854a3a-2127-422b-91ae-364da2661108\", \"tags\": [\"Vendor Advisory\"]}, {\"url\": \"http://support.apple.com/kb/HT4802\", \"source\": \"af854a3a-2127-422b-91ae-364da2661108\", \"tags\": [\"Vendor Advisory\"]}, {\"url\": \"http://support.apple.com/kb/HT4803\", \"source\": \"af854a3a-2127-422b-91ae-364da2661108\", \"tags\": [\"Vendor Advisory\"]}, {\"url\": \"http://support.apple.com/kb/HT5002\", \"source\": \"af854a3a-2127-422b-91ae-364da2661108\"}, {\"url\": \"http://www.appleinsider.com/articles/11/07/06/hackers_release_new_browser_based_ios_jailbreak_based_on_pdf_exploit.html\", \"source\": \"af854a3a-2127-422b-91ae-364da2661108\"}, {\"url\": \"http://www.debian.org/security/2011/dsa-2294\", \"source\": \"af854a3a-2127-422b-91ae-364da2661108\"}, {\"url\": \"http://www.mandriva.com/security/advisories?name=MDVSA-2011:120\", \"source\": \"af854a3a-2127-422b-91ae-364da2661108\"}, {\"url\": \"http://www.redhat.com/support/errata/RHSA-2011-1085.html\", \"source\": \"af854a3a-2127-422b-91ae-364da2661108\"}, {\"url\": \"http://www.securityfocus.com/bid/48619\", \"source\": \"af854a3a-2127-422b-91ae-364da2661108\"}]",
"sourceIdentifier": "product-security@apple.com",
"vulnStatus": "Modified",
"weaknesses": "[{\"source\": \"nvd@nist.gov\", \"type\": \"Primary\", \"description\": [{\"lang\": \"en\", \"value\": \"CWE-189\"}]}]"
},
"nvd": "{\"cve\":{\"id\":\"CVE-2011-0226\",\"sourceIdentifier\":\"product-security@apple.com\",\"published\":\"2011-07-19T22:55:00.820\",\"lastModified\":\"2026-04-29T01:13:23.040\",\"vulnStatus\":\"Modified\",\"cveTags\":[],\"descriptions\":[{\"lang\":\"en\",\"value\":\"Integer signedness error in psaux/t1decode.c in FreeType before 2.4.6, as used in CoreGraphics in Apple iOS before 4.2.9 and 4.3.x before 4.3.4 and other products, allows remote attackers to execute arbitrary code or cause a denial of service (memory corruption and application crash) via a crafted Type 1 font in a PDF document, as exploited in the wild in July 2011.\"},{\"lang\":\"es\",\"value\":\"Error de entero sin signo en psaux/t1decode.c en FreeType anterior a v2.4.6, es usado enCoreGraphics en Apple iOS anterior a v4.2.9 y v4.3.x anterior a v4.3.4 y otros productos, permite a atacantes remotos ejecutar c\u00f3digo de su elecci\u00f3n o provocar una denegaci\u00f3n de servicio (corrupci\u00f3n de memoria o ca\u00edda de la aplicaci\u00f3n) a trav\u00e9s de una fuente manipulada Type 1 en un documento PDF, como se explot\u00f3 en Julio 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"redhat_vex": {
"aggregate_severity": "Important",
"current_release_date": "2026-01-09T08:48:38+00:00",
"cve": "CVE-2011-0226",
"id": "CVE-2011-0226",
"initial_release_date": "2011-07-08T00:00:00+00:00",
"product_status:fixed": "46",
"product_status:known_not_affected": "2",
"source": "Red Hat CSAF VEX",
"status": "final",
"title": "freetype: postscript type1 font parsing vulnerability",
"url": "https://security.access.redhat.com/data/csaf/v2/vex/2011/cve-2011-0226.json",
"version": "3"
},
"suse_vex": {
"aggregate_severity": "moderate",
"current_release_date": "2026-08-27T02:13:42Z",
"cve": "CVE-2011-0226",
"id": "CVE-2011-0226",
"initial_release_date": "2023-02-15T05:55:04Z",
"product_status:known_affected": "3",
"product_status:recommended": "194",
"source": "SUSE CSAF VEX",
"status": "interim",
"title": "SUSE CVE CVE-2011-0226",
"url": "https://ftp.suse.com/pub/projects/security/csaf-vex/cve-2011-0226.json",
"version": "20"
}
}
}
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Experimental. This forecast is provided for visualization only and may change without notice. Do not use it for operational decisions.
Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.
Sightings
| Author | Source | Type | Date | Other |
|---|
Nomenclature
- Seen: The vulnerability was mentioned, discussed, or observed by the user.
- Confirmed: The vulnerability has been validated from an analyst's perspective.
- Published Proof of Concept: A public proof of concept is available for this vulnerability.
- Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
- Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
- Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
- Not confirmed: The user expressed doubt about the validity of the vulnerability.
- Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.
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The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the
vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base
model, served locally by ML-Gateway.
They have not been verified by an analyst and are provided for guidance only.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
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