CVE-2011-3253
CalDAV in Apple iOS before 5 does not validate X.509 certificates for SSL sessions, which allows...
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.
Exploit likelihood
What each source reports
NVD Score used
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.
- Record
CVE-2011-3253- CVSS 2.0
- 2.6 Low
AV:N/AC:H/Au:N/C:P/I:N/A:N - Weakness
- CWE-200
- Updated
- 2026-11-02
CVE List No score
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.
- Record
CVE-2011-3253- Updated
- 2026-11-02
EUVDEUVD-2011-3217 No score
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.
- Record
EUVD-2011-3217- Updated
- 2026-11-03
GitHub AdvisoriesGHSA-frpq-wjg3-5rp5 No score
CalDAV in Apple iOS before 5 does not validate X.509 certificates for SSL sessions, which allows...
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.
- Record
GHSA-frpq-wjg3-5rp5- Weakness
- CWE-200
- Updated
- 2026-11-02
Affected products
History
| Recorded | Changed | Sources |
|---|---|---|
| aliases | EUVD | |
| first indexed | CVE List, GitHub Advisories, NVD |
Dates are when Every CVE recorded each change. Upstream dates may differ.
In short
CVE-2011-3253 is a low vulnerability (CVSS 2.6) in Apple Iphone Os, published October 14, 2011. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 0.57%, the 47th percentile. No source names a fixed version.