CVE-2011-0253

WebKit, as used in Apple Safari before 5.0.6, allows remote attackers to execute arbitrary code...

9.3 High

WebKit, as used in Apple Safari before 5.0.6, allows remote attackers to execute arbitrary code or cause a denial of service (memory corruption and application crash) via a crafted web site, a different vulnerability than other WebKit CVEs listed in APPLE-SA-2011-07-20-1.

Exploit likelihood

3.56%Up 0.8 points since Feb 4, 2022

What each source reports

NVD Score used 9.3

Record: CVE-2011-0253
CVSS 2.0: 9.3 HighAV:N/AC:M/Au:N/C:C/I:C/A:C
Weakness: CWE-119
Updated: 2026-11-02

CVE List No score

Record: CVE-2011-0253
Updated: 2026-11-02

EUVDEUVD-2011-0279 No score

Record: EUVD-2011-0279
Updated: 2026-11-03

GitHub AdvisoriesGHSA-gj7x-c39c-cg57 No score

WebKit, as used in Apple Safari before 5.0.6, allows remote attackers to execute arbitrary code...

Record: GHSA-gj7x-c39c-cg57
Weakness: CWE-119
Updated: 2026-11-02

OSVUBUNTU-CVE-2011-0253 No score

Record: UBUNTU-CVE-2011-0253
Updated: 2026-11-02

Affected products

Affected packages

Affected packages
Package	Affected	Fixed
`qtwebkit-source` Ubuntu:16.04:LTS	All versions, plus listed versions 2.3.2-0ubuntu102.3.2-0ubuntu11	None known

History

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

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

In short

CVE-2011-0253 is a high vulnerability (CVSS 9.3) in Apple Safari, published July 21, 2011. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 3.56%, the 89th percentile. No source names a fixed version.