CVE-2011-0163

What it is

WebKit, as used in Apple Safari before 5.0.4 and iOS before 4.3, does not properly handle unspecified "cached resources," which allows remote attackers to cause a denial of service (resource unavailability) via a crafted web site that conducts a cache-poisoning attack.

At a glance

Exploitability

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

Exploit odds

1.6% chance of exploitation in the next 30 days (EPSS).

Fix

A patch, advisory or fixed version is referenced. Upgrade or apply it.

Timeline

1. 2011-03-11 22:55 UTC PublishedDisclosed publicly on CVE.org and NVD
2. 2026-06-16 23:26 UTC Last updatedMost recent change to the record

Why it ranks here

• Exploited in the wild: no, CISA does not list it.
• Exploit odds: 1.6% in the next 30 days (EPSS).
• Severity: 4.3 MEDIUM (CVSS).
• Fix: a patch or advisory is linked.

Details

Published

2011-03-11 22:55 UTC

Last modified

2026-06-16 23:26 UTC

Exploit probability

1.6% · EPSS, next 30 days

Weakness

CWE-20 · Improper input validation

Record status

Modified

Affected

• Apple Safari ≤ 5.0.3
• 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 · 4.3

Attack vector

Network

Complexity

Medium

Authentication

None

Confidentiality

None

Integrity

None

Availability

Partial

Is it in your code?

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