CVE-2010-0520

Heap-based buffer overflow in QuickTimeAuthoring.qtx in QuickTime in Apple Mac OS X before 10.6.3...

6.8 MediumPublic exploit

Heap-based buffer overflow in QuickTimeAuthoring.qtx in QuickTime in Apple Mac OS X before 10.6.3 allows remote attackers to execute arbitrary code or cause a denial of service (application crash) via a crafted FLC file, related to crafted DELTA_FLI chunks and untrusted length values in a .fli file, which are not properly handled during decompression.

Exploit likelihood

18.6%Up 9.7 points since Feb 4, 2022

What each source reports

NVD Score used 6.8

Record: CVE-2010-0520
CVSS 2.0: 6.8 MediumAV:N/AC:M/Au:N/C:P/I:P/A:P
Weakness: CWE-119
Updated: 2026-11-02

CVE List No score

Record: CVE-2010-0520
Updated: 2026-11-02

EUVDEUVD-2010-0551 No score

Record: EUVD-2010-0551
Updated: 2026-11-03

GitHub AdvisoriesGHSA-mh9h-9rjj-5gp4 No score

Heap-based buffer overflow in QuickTimeAuthoring.qtx in QuickTime in Apple Mac OS X before 10.6.3...

Record: GHSA-mh9h-9rjj-5gp4
Weakness: CWE-119
Updated: 2026-11-02

Affected products

Public exploits

Links only. Every CVE stores no exploit code.

Public exploits
Source	Link	Date
Exploit-DB	Apple QuickTime FLI LinePacket - Remote Code Execution	2010-09-18

History

History
Recorded	Changed	Sources
Nov 3, 2026	aliases	EUVD
Nov 2, 2026	first indexed	CVE List, Exploit-DB, GitHub Advisories, NVD

Dates are when Every CVE recorded each change. Upstream dates may differ.

In short

CVE-2010-0520 is a medium vulnerability (CVSS 6.8) in Apple Mac Os X, published March 30, 2010. Public exploit code exists. EPSS puts the chance of exploitation in the next 30 days at 18.6%, the 97th percentile. No source names a fixed version.