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
Published Oct 14, 2011
2.6
LOWCVSS 2.0
EPSS 0.57%
Description
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.
Affected products
No data.
- 3.0
- 3.1
- 3.1
- 3.1
- 3.1.2
- 3.1.3
- 3.2
- 3.2
- 3.2.1
- 3.2.1
- 3.2.2
- 4.0
- 4.0
- 4.0
- 4.0.1
- 4.0.1
- 4.0.1
- 4.0.2
- 4.1
- 4.2.1
- 4.2.5
- 4.2.8
- 4.3.0
- 4.3.1
- 4.3.2
- 4.3.3
- 4.3.5
- 4.3.5
- 4.3.5
No data.
No Red Hat product state for this CVE.
No package ranges for this CVE.
Remediation
No remediation recorded yet.
Metrics
No CVSS v4.0 score for this CVE.
No CVSS v3.1 score for this CVE.
No CVSS v3.0 score for this CVE.
AV:N/AC:H/Au:N/C:P/I:N/A:N
This CVE is not in the KEV list.
No CISA SSVC assessment for this CVE yet.
Estimated probability of exploitation in the wild in the next 30 days (FIRST EPSS). As of Oct 1, 2026.
Score over time
2022–2026- EPSS v2
- EPSS v3
- EPSS v4
- EPSS v5
Percentile over time
- EPSS v2
- EPSS v3
- EPSS v4
- EPSS v5
Table of values (10 key points)
Flat stretches are collapsed; showing up to 120 newest points.
| Date | Score | Percentile | Model |
|---|---|---|---|
| Oct 1, 2026 | 0.57% (0.00566) | 44.95th | v5 (v2026.06.15) |
| Jun 15, 2026 | 0.57% (0.00566) | 42.29th | v5 (v2026.06.15) |
| Mar 17, 2025 | 0.18% (0.00178) | 37.10th | v4 (v2025.03.14) |
| Dec 12, 2024 | 0.09% (0.00091) | 40.93th | v3 (v2023.03.01) |
| May 10, 2024 | 0.10% (0.00095) | 39.64th | v3 (v2023.03.01) |
| Mar 7, 2023 | 0.09% (0.00091) | 37.63th | v3 (v2023.03.01) |
| Mar 6, 2023 | 0.89% (0.00885) | 27.89th | v2 (v2022.01.01) |
| Sep 10, 2022 | 0.89% (0.00885) | 26.24th | v2 (v2022.01.01) |
| Apr 1, 2022 | 0.89% (0.00885) | 24.24th | v2 (v2022.01.01) |
| Feb 4, 2022 | 0.89% (0.00885) | 10.50th | v2 (v2022.01.01) |
References (2)
- http://lists.apple.com/archives/Security-announce/2011//Oct/msg00001.html vendor-advisoryx_refsource_APPLEVendor Advisory
- http://support.apple.com/kb/HT4999 x_refsource_CONFIRMVendor Advisory
| Link | Providers | Tags |
|---|---|---|
| http://lists.apple.com/archives/Security-announce/2011//Oct/msg00001.html | vendor-advisoryx_refsource_APPLEVendor Advisory | |
| http://support.apple.com/kb/HT4999 | x_refsource_CONFIRMVendor Advisory |
Change history (0)
No recorded changes yet.