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CVE-2011-1344

24
FAUCET Score

CVE-2011-1344 describes a use-after-free vulnerability in WebKit, affecting Apple Safari before 5.0.5 and iOS versions before 4.3.2 and 4.2.7. This flaw allows remote attackers to execute arbitrary code by manipulating WBR tags and text nodes, as demonstrated in a Pwn2Own competition. The vulnerability has a CVSS score of 6.8, indicating medium severity with a network attack vector and medium attack complexity. Successful exploitation could lead to partial confidentiality, integrity, and availability impacts. There is no evidence of active exploitation, nor are there publicly available exploit modules in Metasploit, Nuclei, or ExploitDB. Community discussion and media coverage for this CVE are minimal, suggesting low public attention.

Impacted Technologies

VendorProductVersion(s)CPE
<= 5.0.4CPE matchmatch criteria
cpe:2.3:a:apple:safari:*:*:*:*:*:*:*:*
1.0CPE matchmatch criteria
cpe:2.3:a:apple:safari:1.0:*:*:*:*:*:*:*
1.0CPE matchmatch criteria
cpe:2.3:a:apple:safari:1.0:beta:*:*:*:*:*:*
1.0CPE matchmatch criteria
cpe:2.3:a:apple:safari:1.0:beta2:*:*:*:*:*:*
1.0.0CPE matchmatch criteria
cpe:2.3:a:apple:safari:1.0.0:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 2.0

6.8MEDIUM

AV:N/AC:M/Au:N/C:P/I:P/A:P

Confidentiality Impact
PARTIAL
Integrity Impact
PARTIAL
Availability Impact
PARTIAL
Access Vector
NETWORK
Access Complexity
MEDIUM
Authentication
NONE
Exploitability Score
8.6
Impact Score
6.4
CvssVersion
2.0

Exploit Intelligence

EPSS Score
5.92%
Probability of exploitation in next 30 days
EPSS Percentile
92.5%
Percentile rank of EPSS score among Peer Group
As of 2026-07-24
Model: v2026.06.15
This CVE's current EPSS score of 0.0592 is in the 91st percentile among its peer group of 19,954 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.0 Bluesky, 0.0 Mastodon, and 0.2 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.0 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Remediation records are not available for this CVE.

References

dvlabs.tippingpoint.com / blog/2011/02/02/pwn2own-2011
lists.apple.com / archives/security-announce/2011//Apr/msg00000.html
lists.apple.com / archives/security-announce/2011//Apr/msg00001.html
lists.apple.com / archives/security-announce/2011//Apr/msg00002.html
secunia.com / advisories/44151
secunia.com / advisories/44154
exchange.xforce.ibmcloud.com / vulnerabilities/66061
support.apple.com / kb/HT4596
support.apple.com / kb/HT4607
twitter.com / aaronportnoy/statuses/45632544967901187
computerworld.com / s/article/9214002/Safari_IE_hacked_first_at_Pwn2Own
securityfocus.com / archive/1/517505/100/0/threaded
securityfocus.com / archive/1/517517/100/0/threaded
securityfocus.com / bid/46822
securitytracker.com / id
vupen.com / english/advisories/2011/0984
zdnet.com / blog/security/safarimacbook-first-to-fall-at-pwn2own-2011/8358
zerodayinitiative.com / advisories/ZDI-11-135