Is CVE-2011-0159 being actively exploited?

CVE-2011-0159 is not currently listed in the CISA Known Exploited Vulnerabilities (KEV) catalog.

What is the CVSS score for CVE-2011-0159?

CVE-2011-0159 has a CVSS 2.0 base score of 5.0 (MEDIUM).

CVE-2011-0159

MEDIUM · CVSS 5.0EPSS 1.7%EU EUVD

The Safari Settings feature in Safari in Apple iOS 4.x before 4.3 does not properly implement the clearing of cookies during execution of the Safari application, which might make it easier for remote web servers to track users by setting a cookie.

Key facts

CVSS score: 5.0 (v2.0)
Severity: MEDIUM
CVSS vector: AV:N/AC:L/Au:N/C:P/I:N/A:N
Weakness (CWE): CWE-20
EPSS score: 1.7% (78th percentile)
In CISA KEV: No
In EU EUVD: Yes (EUVD-2011-0185)
Published: March 11, 2011
NVD last modified: June 16, 2026
Status: Modified

EU Vulnerability Database (EUVD)

This vulnerability is also tracked by ENISA as EUVD-2011-0185 in the EU Vulnerability Database. Last updated in EUVD on August 6, 2024.

View on the EU Vulnerability Database

Affected products

apple / iphone os
apple / iphone os
apple / iphone os

References

http://lists.apple.com/archives/security-announce/2011//Mar/msg00003.html(Vendor Advisory)
http://support.apple.com/kb/HT4564(Vendor Advisory)
http://www.securityfocus.com/bid/46810
http://www.securitytracker.com/id?1025182

Last updated September 17, 2026 · Source: NVD, CISA KEV, FIRST.org EPSS

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