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CVE-2011-3253

LOW · CVSS 2.6EPSS 0.6%EU EUVD

CalDAV in Apple iOS before 5 does not validate X.509 certificates for SSL sessions, which allows man-in-the-middle attackers to spoof calendar servers and obtain sensitive information via an arbitrary certificate.

Key facts

CVSS score
2.6 (v2.0)
Severity
LOW
CVSS vector
AV:N/AC:H/Au:N/C:P/I:N/A:N
Weakness (CWE)
CWE-200
EPSS score
0.6% (47th percentile)
In CISA KEV
No
In EU EUVD
Yes (EUVD-2011-3217)
Published
October 14, 2011
NVD last modified
June 16, 2026
Status
Modified

EU Vulnerability Database (EUVD)

This vulnerability is also tracked by ENISA as EUVD-2011-3217 in the EU Vulnerability Database. Last updated in EUVD on September 16, 2024.

View on the EU Vulnerability Database

Affected products

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

References

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

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