Cisco engineering has identified at least one serious software issue with the release which you have selected that may affect your use of these software. Please review the Software Advisory notice below to determine if the issue(s) apply to your network. You may proceed to download this software if you have no concerns with the issue(s) described.
Cisco Wireless IOSXE 17.18.4a, 17.15.6, 17.9.10. 17.12.8, 17.9.10 is affected by following critical defects
1. CSCwv93265
Affected Platforms: All Cisco 9800 Wireless Controller and Wireless Package for Cat9K.
Affected Software version: Cisco IOS XE 26.1.2, Cisco IOS XE 17.18.4a, Cisco IOS XE 17.18.4, Cisco IOS XE 17.15.6, Cisco IOS XE 17.12.8, Cisco IOS XE 17.9.10
Next Step: A corrective APSP with fix will be released as and when it's made available before Aug 15th. Cisco recommends deploying APSP once APSP is released.
Fixed Release: Refer to respective product APSP download page
CSCwv98483
Affected Platforms: C9800-L, CW9800-L, C9800-CL (Only in Guest-Anchor scenario)
Affected Software version: Cisco IOS XE 26.1.2, Cisco IOS XE 17.18.4a, Cisco IOS XE 17.18.4, Cisco IOS XE 17.15.6
Workaround: Refer to Release Note Enclosure @ CSCwv98483
Fixed Release: Cisco is actively working on a fixed patch/SMU and customers will be notified as soon as it becomes available