CVE-2011-0222Safari Memory Corruption
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.
Published Jul 21, 2011 · Updated Apr 28, 2026 · Also known as UBUNTU-CVE-2011-0222
Key Facts
Patch immediately- CVE-2011-0222 is a critical-severity vulnerability (CVSS 9.3 v2) affecting Safari (Apple), Webkit (Apple), qtwebkit-source (ubuntu).
- It is not listed in any known-exploited vulnerabilities catalog. Public exploit code is available.
- EPSS estimates a 22% probability of exploitation in the next 30 days.
- Fixed versions are available, including Safari 5.0.5.
- Brandefense priority: patch immediately, because public exploit code exists for a high-severity flaw.
Scores
CVSS v2
9.3
AV:N/AC:M/Au:N/C:C/I:C/A:C
EPSS (30-day exploit likelihood)
22%
Higher than 97.6% of all scored CVEs
Exploit maturity
Proof of concept
ATLAS score
44/100
Publication score, see How it works
Exploitation Verdict
KEV listed
Not listed
Federal due date
None
No federal due date
Ransomware use
Not reported
Attributed actors
None named
Exploit & Defence Guidance
Exploit maturity
Proof of concept
Public exploit code
2
Proof-of-concept links
In-the-wild evidence
0
Reports of active use
Advisories And Exploit References
Description
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.
Affected Products
68 affected entries in total| Product | Affected versions | Fixed in |
|---|---|---|
| SafariApple | 1.0, 1.0.0, 1.0.0b1, 1.0.0b2, 1.0.1, 1.0.2, 1.0.3, 1.0.3-85.8 | 5.0.5 |
| WebkitApple | See advisory | n/a |
| qtwebkit-sourceubuntu | See advisory | n/a |
Patched Releases
Safari
5.0.5
Timeline
Publicly disclosed
Jul 21, 2011
Last updated
Apr 28, 2026
Weakness Type
- CWE-119 Improper Restriction of Operations within the Bounds of a Memory Buffer
References
- advisoryubuntu.com · CVE-2011-0222
- advisorycve.org · CVERecord
- advisorysupport.apple.com · HT4808
- patchAPPLE-SA-2011-07-20-1
- exploitExploitDB-17567
FAQ
Common Questions.
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.
Affected: Safari (Apple) versions 1.0, 1.0.0, 1.0.0b1, 1.0.0b2, 1.0.1, 1.0.2, 1.0.3, 1.0.3-85.8; Webkit (Apple); qtwebkit-source (ubuntu). The full list is in the CVE brief.
It is not listed in any known-exploited vulnerabilities catalog.
No, it is not currently listed in the CISA Known Exploited Vulnerabilities catalog.
Public exploit code is available.
Fixed versions are available, including Safari 5.0.5.
Brandefense priority: patch immediately, because public exploit code exists for a high-severity flaw.
Is CVE-2011-0222 On Your Attack Surface?
Brandefense matches it against the products discovered on your perimeter and opens a finding the day a CVE like this is listed.
Request A Demo