Medium 6.4Published May 10, 2012

CVE-2012-0655libsecurity in Apple Mac OS X before 10.7.4 does not properly restrict the length of RSA keys within X.509 certificates, which makes it easier for remote attackers to defeat cryptographic protection…

Updated under an hour ago (Nov 2, 2026, 12:10 AM ET)

Does this affect you?

It affects apple mac_os_x and 1 other product. Add what you run to find out whether that includes you.

No exploitation reported and no EPSS estimate yet.

Do this next

Start free and add your stackFree account, 3 products Every CVE for apple mac_os_x Exploited in the last 30 days

libsecurity in Apple Mac OS X before 10.7.4 does not properly restrict the length of RSA keys within X.509 certificates, which makes it easier for remote attackers to defeat cryptographic protection mechanisms by conducting a spoofing or network-sniffing attack during communication with a site that uses a short key.

CVSS: 6.4 MEDIUM (v2.0, NVD)AV:N/AC:L/Au:N/C:P/I:P/A:N
Weakness (CWE): CWE-310
Known exploited: Not in CISA's KEV catalog
EPSS (exploitation in the next 30 days): Not loaded for this CVE
Assigned by: Not given
NVD analysis: Modified
Record last updated: Jun 16, 2026
First seen by InfoSec Signals: Nov 1, 2026

Affected products

Affected products

apple mac_os_x apple:mac_os_x	through 10.7.3; 10.0; 10.0.0; 10.0.1; 10.0.2; 10.0.3; 10.0.4; 10.1; and 62 more ranges	NVD
apple mac_os_x_server apple:mac_os_x_server	through 10.7.3; 10.0; 10.0.0; 10.0.1; 10.0.2; 10.0.3; 10.0.4; 10.1; and 62 more ranges	NVD

References

References

http://lists.apple.com/archives/security-announce/2012/May/msg00001.html	vendor-advisory
http://support.apple.com/kb/HT5281	vendor-advisory
http://www.securityfocus.com/bid/53445
http://www.securityfocus.com/bid/53462

The CVE record on cve.org NVD's entry

The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.