CVE-2011-0257

CVE-2011-0257 is a critical-severity vulnerability in Apple Quicktime with a CVSS 2.0 base score of 9.3. Its EPSS exploit-prediction score of 60% places it in the 99th percentile, indicating an elevated likelihood of exploitation. The underlying weakness is classified as CWE-189.

Key facts

• Severity: Critical (CVSS 2.0 base score 9.3)
• EPSS exploit prediction: 60% (99th percentile)
• Actively exploited: Not listed in CISA KEV
• Weakness: CWE-189
• Affected product: Apple Quicktime
• Published: 2011-08-15
• Last modified: 2026-06-16

Description

Integer signedness error in Apple QuickTime before 7.7 allows remote attackers to execute arbitrary code or cause a denial of service (application crash) via a crafted PnSize opcode in a PICT file that triggers a stack-based buffer overflow.

Frequently asked questions

What is CVE-2011-0257?

Integer signedness error in Apple QuickTime before 7.7 allows remote attackers to execute arbitrary code or cause a denial of service (application crash) via a crafted PnSize opcode in a PICT file that triggers a stack-based buffer overflow.

How severe is CVE-2011-0257?

CVE-2011-0257 has a CVSS 2.0 base score of 9.3, rated critical severity.

Is CVE-2011-0257 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 60% (99th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2011-0257?

CVE-2011-0257 primarily affects Apple Quicktime. In total, 32 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2011-0257?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.

When was CVE-2011-0257 published?

CVE-2011-0257 was published on 2011-08-15 and last updated on 2026-06-16.

References

• http://securityreason.com/securityalert/8365
• http://support.apple.com/kb/HT4826
• http://www.exploit-db.com/exploits/17777
• http://zerodayinitiative.com/advisories/ZDI-11-252/
• https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A16059

Affected products (32)

• cpe:2.3:a:apple:quicktime:*:*:*:*:*:*:*:*
• cpe:2.3:a:apple:quicktime:7.0.0:*:*:*:*:*:*:*
• cpe:2.3:a:apple:quicktime:7.0.1:*:*:*:*:*:*:*
• cpe:2.3:a:apple:quicktime:7.0.2:*:*:*:*:*:*:*
• cpe:2.3:a:apple:quicktime:7.0.3:*:*:*:*:*:*:*
• cpe:2.3:a:apple:quicktime:7.0.4:*:*:*:*:*:*:*
• cpe:2.3:a:apple:quicktime:7.1.0:*:*:*:*:*:*:*
• cpe:2.3:a:apple:quicktime:7.1.1:*:*:*:*:*:*:*
• cpe:2.3:a:apple:quicktime:7.1.2:*:*:*:*:*:*:*
• cpe:2.3:a:apple:quicktime:7.1.3:*:*:*:*:*:*:*
• cpe:2.3:a:apple:quicktime:7.1.4:*:*:*:*:*:*:*
• cpe:2.3:a:apple:quicktime:7.1.5:*:*:*:*:*:*:*
• cpe:2.3:a:apple:quicktime:7.1.6:*:*:*:*:*:*:*
• cpe:2.3:a:apple:quicktime:7.2.0:*:*:*:*:*:*:*
• cpe:2.3:a:apple:quicktime:7.2.1:*:*:*:*:*:*:*
• cpe:2.3:a:apple:quicktime:7.3.0:*:*:*:*:*:*:*
• cpe:2.3:a:apple:quicktime:7.3.1:*:*:*:*:*:*:*
• cpe:2.3:a:apple:quicktime:7.3.1.70:*:*:*:*:*:*:*
• cpe:2.3:a:apple:quicktime:7.4.0:*:*:*:*:*:*:*
• cpe:2.3:a:apple:quicktime:7.4.1:*:*:*:*:*:*:*
• cpe:2.3:a:apple:quicktime:7.4.5:*:*:*:*:*:*:*
• cpe:2.3:a:apple:quicktime:7.5.0:*:*:*:*:*:*:*
• cpe:2.3:a:apple:quicktime:7.5.5:*:*:*:*:*:*:*
• cpe:2.3:a:apple:quicktime:7.6.0:*:*:*:*:*:*:*
• cpe:2.3:a:apple:quicktime:7.6.1:*:*:*:*:*:*:*
• cpe:2.3:a:apple:quicktime:7.6.2:*:*:*:*:*:*:*
• cpe:2.3:a:apple:quicktime:7.6.5:*:*:*:*:*:*:*
• cpe:2.3:a:apple:quicktime:7.6.6:*:*:*:*:*:*:*
• cpe:2.3:a:apple:quicktime:7.6.7:*:*:*:*:*:*:*
• cpe:2.3:a:apple:quicktime:7.6.8:*:*:*:*:*:*:*
• cpe:2.3:a:apple:quicktime:7.66.71.0:*:*:*:*:*:*:*
• cpe:2.3:a:apple:quicktime:7.67.75.0:*:*:*:*:*:*:*

More vulnerabilities in Apple Quicktime

• CVE-2007-6238 — Critical (CVSS 10.0): Unspecified vulnerability in Apple QuickTime 7.2 on Windows XP allows remote attackers to execute arbitrary code via…
• CVE-2007-0462 — Critical (CVSS 10.0): The _GetSrcBits32ARGB function in Apple QuickDraw, as used by Quicktime 7.1.3 and other applications on Mac OS X 10.4.8…
• CVE-2011-3428 — Critical (CVSS 9.8): Buffer overflow in QuickTime before 7.7.1 for Windows allows remote attackers to execute arbitrary code.
• CVE-2014-4979 — Critical (CVSS 9.3): Apple QuickTime allows remote attackers to execute arbitrary code or cause a denial of service (memory corruption) via…
• CVE-2014-1251 — Critical (CVSS 9.3): Buffer overflow in Apple QuickTime before 7.7.5 allows remote attackers to execute arbitrary code or cause a denial of…
• CVE-2014-1250 — Critical (CVSS 9.3): Apple QuickTime before 7.7.5 does not properly perform a byte-swapping operation, which allows remote attackers to…

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