Last Modified: Aug 19, 2026
Affected Product(s):
BIG-IP LTM
Known Affected Versions:
11.5.1, 11.5.1 hf1, 11.5.1 hf2, 11.5.1 hf3, 11.5.1 hf4, 11.5.1 hf5, 11.5.1 hf6, 11.5.1 hf7, 11.5.1 hf8, 11.5.1 hf9, 11.5.1 hf10, 11.5.1 hf11, 11.5.2, 11.5.2 hf1, 11.5.3, 11.5.3 hf1, 11.5.3 hf2, 11.5.4, 11.5.4 hf1, 11.5.4 hf2, 11.5.4 hf3, 11.5.4 hf4, 11.5.5, 11.5.6, 11.5.7, 11.5.8, 11.5.9, 11.5.10, 11.6.0, 11.6.0 hf1, 11.6.0 hf2, 11.6.0 hf3, 11.6.0 hf4, 11.6.0 hf5, 11.6.0 hf6, 11.6.0 hf7, 11.6.0 hf8, 12.0.0, 12.0.0 hf1, 12.0.0 hf2, 12.0.0 hf3, 12.0.0 hf4
Fixed In:
12.1.0, 11.6.1
Opened: Nov 14, 2014 Severity: 2-Critical Related Article:
K17491
This is due to using older versions of httpd (which includes mod_ssl ...). Newer versions of httpd as of 2.2.15-39 include the necessary support for TLSv1.1 and TLSv1.2.
No support is provided for TLSv1.1 and TLSv1.2.
Any older versions of httpd which are not upgraded to 2.2.15-39 or selectively patched for the mod_ssl component will not be able to provide support for TLSv1.1 and TLSv1.2. Note that in older releases, there is a dependency on openssl 1.0.1 for a backport of the mod_ssl changes to actually support TLSv1.1 and TLSv1.2.
Upgrade to one of the following: 12.0.0-hf1 - includes changes to mod_ssl 12.1.0 - includes update to httpd 2.2.15-39
Upgrade to httpd 2.2.15-39 (from el6.6) provides the needed changes to mod_ssl to support TLSv1.1 and TLSv1.2.