CVE-2011-1344

What it is

Use-after-free vulnerability in WebKit, as used in Apple Safari before 5.0.5; iOS before 4.3.2 for iPhone, iPod, and iPad; iOS before 4.2.7 for iPhone 4 (CDMA); and possibly other products allows remote attackers to execute arbitrary code by adding children to a WBR tag and then removing the tag, related to text nodes, as demonstrated by Chaouki Bekrar during a Pwn2Own competition at CanSecWest 2011.

At a glance

Exploitability

Can be exploited over the network without logging in. Limited direct impact.

Exploit odds

6.1% chance of exploitation in the next 30 days (EPSS).

Fix

No patch or advisory is linked yet. Look at mitigations or restrict exposure.

Timeline

1. 2011-03-10 20:55 UTC PublishedDisclosed publicly on CVE.org and NVD
2. 2026-06-16 23:29 UTC Last updatedMost recent change to the record

Why it ranks here

• Exploited in the wild: no, CISA does not list it.
• Exploit odds: 6.1% in the next 30 days (EPSS).
• Severity: 6.8 MEDIUM (CVSS).
• Fix: none linked yet, which raises it.

Details

Published

2011-03-10 20:55 UTC

Last modified

2026-06-16 23:29 UTC

Exploit probability

6.1% · EPSS, next 30 days

Weakness

CWE-399

Record status

Modified

Affected

• Apple Safari ≤ 5.0.4
• Apple Safari 1.0
• Apple Safari 1.0.0
• Apple Safari 1.0.0b1
• Apple Safari 1.0.0b2
• Apple Safari 1.0.1
• Apple Safari 1.0.2
• Apple Safari 1.0.3

Attack profile CVSS 2.0 · 6.8

Attack vector

Network

Complexity

Medium

Authentication

None

Confidentiality

Partial

Integrity

Partial

Availability

Partial

Is it in your code?

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