How severe is CVE-2008-3627?

CVE-2008-3627 has a CVSS 2.0 base score of 9.3, rated critical severity.

Is CVE-2008-3627 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 9% (94th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2008-3627?

CVE-2008-3627 affects Apple Quicktime. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2008-3627?

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-2008-3627 published?

CVE-2008-3627 was published on 2008-09-11 and last updated on 2026-06-16.

CVE-2008-3627

CVE-2008-3627 is a critical-severity vulnerability in Apple Quicktime with a CVSS 2.0 base score of 9.3. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-399.

Key facts

Severity: Critical (CVSS 2.0 base score 9.3)
EPSS exploit prediction: 9% (94th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-399
Affected product: Apple Quicktime
Published: 2008-09-11
Last modified: 2026-06-16

Description

Apple QuickTime before 7.5.5 does not properly handle (1) MDAT atoms in MP4 video files within QuickTimeH264.qtx, (2) MDAT atoms in mov video files within QuickTimeH264.scalar, and (3) AVC1 atoms in an unknown media type within an unspecified component, which allows remote attackers to execute arbitrary code or cause a denial of service (heap corruption and application crash) via a crafted, H.264 encoded movie file.

Frequently asked questions

What is CVE-2008-3627?: Apple QuickTime before 7.5.5 does not properly handle (1) MDAT atoms in MP4 video files within QuickTimeH264.qtx, (2) MDAT atoms in mov video files within QuickTimeH264.scalar, and (3) AVC1 atoms in an unknown media type within an unspecified component, which allows remote attackers to execute arbitrary code or cause a denial of service (heap corruption and application crash) via a crafted, H.264 encoded movie file.
How severe is CVE-2008-3627?: CVE-2008-3627 has a CVSS 2.0 base score of 9.3, rated critical severity.
Is CVE-2008-3627 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 9% (94th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2008-3627?: CVE-2008-3627 affects Apple Quicktime. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2008-3627?: 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-2008-3627 published?: CVE-2008-3627 was published on 2008-09-11 and last updated on 2026-06-16.

References

Affected products (1)

cpe:2.3:a:apple:quicktime:*:*:*:*:*:*:*:*

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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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Other CWE-399 (Resource Management Errors) vulnerabilities

CVE-2015-8104 — Critical (CVSS 10.0): The KVM subsystem in the Linux kernel through 4.2.6, and Xen 4.3.x through 4.6.x, allows guest OS users to cause a…
CVE-2015-0339 — Critical (CVSS 10.0): Adobe Flash Player before 13.0.0.277 and 14.x through 17.x before 17.0.0.134 on Windows and OS X and before…
CVE-2015-0335 — Critical (CVSS 10.0): Adobe Flash Player before 13.0.0.277 and 14.x through 17.x before 17.0.0.134 on Windows and OS X and before…
CVE-2015-0333 — Critical (CVSS 10.0): Adobe Flash Player before 13.0.0.277 and 14.x through 17.x before 17.0.0.134 on Windows and OS X and before…
CVE-2014-4121 — Critical (CVSS 10.0): Microsoft .NET Framework 2.0 SP2, 3.5, 3.5.1, 4, 4.5, 4.5.1, and 4.5.2 does not properly parse internationalized…
CVE-2014-0560 — Critical (CVSS 10.0): Use-after-free vulnerability in Adobe Reader and Acrobat 10.x before 10.1.12 and 11.x before 11.0.09 on Windows and OS…

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