CVE-2011-2356: WebKit, as used in Apple iTunes before 10.5, allows man-in-the-middle attackers to execute arbitrary code or c

Q: How do I fix CVE-2011-2356?

itunes: upgrade to newer than 10.4.1; webkit: mitigate or apply the listed mitigation. Exact commands for each OS are on this page.

Q: Is CVE-2011-2356 being exploited?

CVE-2011-2356 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

Q: What does CVE-2011-2356 affect?

CVE-2011-2356 affects itunes, webkit. Severity is high (CVSS 7.6). WebKit, as used in Apple iTunes before 10.5, allows man-in-the-middle attackers to execute arbitrary code or cause a denial of service (memory corruption and application crash) via vectors related to iTunes Store browsing, a different vulne

This month

HIGH 7.6UPGRADEMITIGATE

CVE-2011-2356 is a high-severity flaw (CVSS 7.6) affecting itunes, webkit. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

WebKit, as used in Apple iTunes before 10.5, allows man-in-the-middle attackers to execute arbitrary code or cause a denial of service (memory corruption and application crash) via vectors related to iTunes Store browsing, a different vulnerability than other CVEs listed in APPLE-SA-2011-10-11-1.

Why this priority

High severity

A fixed release or distro patch exists.

Risk facts

CVSS score	7.6 (High)
EPSS exploit chance	2.8% (top 13%)
CISA exploited list	No
Weakness	CWE-119
Published	2011-10-12
Last modified	2026-06-16

Publisher (CNA): Chrome · Vendor: apple

Last updated 2026-06-16 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2011-10-12 18:55 UTCPublished CVE record published
2026-06-16 23:31 UTCUpdated Record last modified

apple itunes UPGRADE

Affected: <= 10.4.1 · 4.0.0 · 4.0.1 · 4.1.0 · 4.2.0 · 4.5.0 · 4.6.0 · 4.7.0

Fixed in: newer than 10.4.1

Safe to downgrade to: no unaffected older release

1. Check installed version

apt-cache policy itunes || rpm -q itunes || itunes --version

2. UPGRADE to newer than 10.4.1 (Debian / Ubuntu)

sudo apt update && sudo apt install --only-upgrade itunes

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade itunes

Note

Distros often backport fixes without changing the version number. Confirm with the distro advisory or changelog.

apple webkit MITIGATE

Affected: all versions

Fixed in: no fixed release known

Safe to downgrade to: no unaffected older release

1. Check installed version

apt-cache policy webkit || rpm -q webkit || webkit --version

No fixed or unaffected release known

Apply the vendor mitigation from the advisory, disable the affected feature, or restrict network access.

Verify at the official source NVD · CVE Program · Report a problem with this page
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.

Quick answers

How do I fix CVE-2011-2356?

itunes: upgrade to newer than 10.4.1; webkit: mitigate or apply the listed mitigation. Exact commands for each OS are on this page.

Is CVE-2011-2356 being exploited?

CVE-2011-2356 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

What does CVE-2011-2356 affect?

CVE-2011-2356 affects itunes, webkit. Severity is high (CVSS 7.6). WebKit, as used in Apple iTunes before 10.5, allows man-in-the-middle attackers to execute arbitrary code or cause a denial of service (memory corruption and application crash) via vectors related to iTunes Store browsing, a different vulne

How urgent is CVE-2011-2356?

Priority 48/100. High severity

Software pages

WebKit vulnerabilities · Apple Safari and WebKit vulnerabilities

Related CVEs

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CVE-2024-27793 HIGH 7.8 UPGRADE The issue was addressed with improved checks
CVE-2023-42938 HIGH 7.8 UPGRADE A logic issue was addressed with improved checks
CVE-2023-32353 HIGH 7.8 UPGRADE A logic issue was addressed with improved checks
CVE-2023-32351 HIGH 7.8 UPGRADE A logic issue was addressed with improved checks

References

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