CVE-2015-6997
The X.509 certificate-trust implementation in Apple iOS before 9.1 does not recognize that the...
The X.509 certificate-trust implementation in Apple iOS before 9.1 does not recognize that the kSecRevocationRequirePositiveResponse flag implies a revocation-checking requirement, which makes it easier for man-in-the-middle attackers to spoof endpoints by leveraging access to a revoked certificate.
Exploit likelihood
What each source reports
NVD Score used
The X.509 certificate-trust implementation in Apple iOS before 9.1 does not recognize that the kSecRevocationRequirePositiveResponse flag implies a revocation-checking requirement, which makes it easier for man-in-the-middle attackers to spoof endpoints by leveraging access to a revoked certificate.
- Record
CVE-2015-6997- CVSS 2.0
- 4.3 Medium
AV:N/AC:M/Au:N/C:N/I:P/A:N - Weakness
- CWE-254
- Updated
- 2026-11-02
CVE List No score
The X.509 certificate-trust implementation in Apple iOS before 9.1 does not recognize that the kSecRevocationRequirePositiveResponse flag implies a revocation-checking requirement, which makes it easier for man-in-the-middle attackers to spoof endpoints by leveraging access to a revoked certificate.
- Record
CVE-2015-6997- Updated
- 2026-11-02
EUVDEUVD-2015-6929 No score
The X.509 certificate-trust implementation in Apple iOS before 9.1 does not recognize that the kSecRevocationRequirePositiveResponse flag implies a revocation-checking requirement, which makes it easier for man-in-the-middle attackers to spoof endpoints by leveraging access to a revoked certificate.
- Record
EUVD-2015-6929- Updated
- 2026-11-03
GitHub AdvisoriesGHSA-6522-r5wp-vr5j No score
The X.509 certificate-trust implementation in Apple iOS before 9.1 does not recognize that the...
The X.509 certificate-trust implementation in Apple iOS before 9.1 does not recognize that the kSecRevocationRequirePositiveResponse flag implies a revocation-checking requirement, which makes it easier for man-in-the-middle attackers to spoof endpoints by leveraging access to a revoked certificate.
- Record
GHSA-6522-r5wp-vr5j- 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-2015-6997 is a medium vulnerability (CVSS 4.3) in Apple Iphone Os, published October 23, 2015. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 0.90%, the 60th percentile. No source names a fixed version.
References
lists.apple.com/archives/security-announce/2015/Oct/msg00002.html
support.apple.com/HT205370
securitytracker.com/id/1033929
securityfocus.com/bid/77268
nvd.nist.gov/vuln/detail/CVE-2015-6997
github.com/advisories/GHSA-6522-r5wp-vr5j