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CVE-2011-1774

72
FAUCET Score

CVE-2011-1774 describes a critical vulnerability in Apple Safari before version 5.0.6, stemming from improper libxslt security settings within WebKit. This flaw allows remote attackers to create arbitrary files and subsequently execute arbitrary code on affected systems by enticing a user to a specially crafted website. With a CVSS score of 8.8, this vulnerability is highly severe, requiring medium attack complexity but enabling complete integrity and availability compromise. While not on the KEV catalog, exploit modules are readily available in Metasploit, indicating a high potential for exploitation, despite a lack of public community discussion or media coverage.

Impacted Technologies

VendorProductVersion(s)CPE
<= 5.0.5CPE 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

8.8HIGH

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

Confidentiality Impact
NONE
Integrity Impact
COMPLETE
Availability Impact
COMPLETE
Access Vector
NETWORK
Access Complexity
MEDIUM
Authentication
NONE
Exploitability Score
8.6
Impact Score
9.2
CvssVersion
2.0

Exploit Intelligence

EPSS Score
43.20%
Probability of exploitation in next 30 days
EPSS Percentile
98.6%
Percentile rank of EPSS score among Peer Group
As of 2026-07-24
Model: v2026.06.15
Metasploit: Apple Safari Webkit libxslt Arbitrary File Creation · Jul 20, 2011
ExploitDB: EDB-17993 · Oct 18, 2011
This CVE's current EPSS score of 0.4320 is in the 97th percentile among its peer group of 8,914 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.1 Reddit, 0.1 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 0.1 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Vendor Patches (1)

applevendor investigatingvia nvd_reference
View patch

References

lists.apple.com / archives/security-announce/2011//Jul/msg00002.html
PatchVendor Advisory
lists.apple.com / archives/Security-announce/2011//Oct/msg00000.html
lists.apple.com / archives/Security-announce/2011//Oct/msg00001.html
securityreason.com / securityalert/8481
support.apple.com / kb/HT4808
Vendor Advisory
support.apple.com / kb/HT4981
support.apple.com / kb/HT4999