Refer to publications that are specific to your language, phone model, and call control system. Navigate from the following documentation URL:

https://www.cisco.com/c/en/us/support/collaboration-endpoints/unified-ip-phone-8800-series/tsd-products-support-series-home.html

The Deployment Guide is located at the following URL:

https://www.cisco.com/c/en/us/support/collaboration-endpoints/unified-ip-phone-8800-series/products-implementation-design-guides-list.html

See the Cisco Unified Communications Manager Documentation Guide and other publications that are specific to your Cisco Unified Communications Manager release. Navigate from the following documentation URL:

https://www.cisco.com/c/en/us/support/unified-communications/unified-communications-manager-callmanager/tsd-products-support-series-home.html

See the publications that are specific to your language, phone model and Cisco Unified Communications Manager Express release. Navigate from the following documentation URL:

https://www.cisco.com/c/en/us/support/unified-communications/unified-communications-manager-express/tsd-products-support-series-home.html

The following list contains the severity 1, 2, and 3 defects that are open for the Cisco Wireless IP Phone 8821 that use Firmware Release 11.0(5).

For more information about an individual defect, you can access the online record for the defect from the Bug Search Toolkit. You must be a registered Cisco.com user to access this online information.

Because defect status continually changes, the list reflects a snapshot of the defects that were open at the time this report was compiled. For an updated view of open defects or to view specific bugs, access the Bug Search Toolkit as described in View Caveats.

• CSCuw10789 Configuration: RTP/sRTP Port Range Configuration

• CSCvh27418 Transfer soft key shall be grey before C answer while semi-transfer is disabled

• CSCvh47665 No Secure tone played on protected phones while enable speaker

• CSCvi80433 Phone doesn't process the EAP request frame, causing de-registration

• CSCvj31950 Intermittent \"Device or resource busy\" can still happen

• CSCvk22665 8821 display comes on sometimes when on call with shared line

• CSCvk59324 CCKM roaming failure then call dropped on roaming stress test bed

• CSCvm04637 Continuous scan busy is reproducible on Conducted test bed

• CSCvm58907 Firmware sometimes couldn't complete the fresh association

• CSCvm66028 Phone will eventually loose WiFi when roaming between 2 AP's set at 80MHz/40MHz

• CSCvm69293 Network configuration info not displayed on current wlan profile

• CSCvm74978 8821 phone sometimes couldn't receive the EAP identity request on 2.4G JFW test bed.

• CSCvm87368 Phone can't get ip address when DHCP option 150 field configured with MaxLength

• CSCvm91475 Can't answer incoming call for a while when hold reversion is 20s with about 20 call sessions

• CSCvm94269 DTIM period in WLAN Diags shows as 3 sometimes

• CSCvn81608 Java process sometimes has significant delay in receiving events from wlanmgr after OOR & In Range

• CSCvm95611 XML message does not display on lock screen if http url priority is 1 or 2

• CSCvn41362 cp8821: \"CAL Text#\" displayed in \"incoming call toast\"

• CSCvn43154 No \"details\" softkey in multi-leg call history

• CSCvo03077 Conference call still in held mode when all the other parties ended the call

• CSCvo26159 8821 failing to roam flexconnect over the air after reassoc_resp it tries to auth with previous AP

• CSCvo30508 Softkey options shouldn't be shown in line missed calls page if blank

• CSCvo32881 Both speaker icon displayed when setting auto answer with speaker on shared line

• CSCvo44285 Multiple Vulnerabilities in qt

• CSCvo45817 Multiple Vulnerabilities in curl

• CSCvo88229 GNU C Library parse_reg_exp Denial of Service Vulnerability

The following list contains the severity 1, 2, and 3 defects that are resolved for the Cisco Wireless IP Phone 8821 that use Firmware Release 11.0(5).

For more information about an individual defect, you can access the online record for the defect from the Bug Search Toolkit. You must be a registered Cisco.com user to access this online information.

Because defect status continually changes, the list reflects a snapshot of the defects that were resolved at the time this report was compiled. For an updated view of resolved defects or to view specific bugs, access the Bug Search Toolkit as described in View Caveats.

• CSCvh15285 DNS info got lost after phone power off/on when DHCP in off status

• CSCvh27809 Focus and soft key error while press up-down hard key during conference

• CSCvh38919 8821: Speaker fail to ring when insert headset

• CSCvh50578 Pressing red button can not cancel new call when PTT is opened

• CSCvh50994 No error toast prompts while cBarge failed due to maximum participants has been reached

• CSCvh89574 Pressing Green button to make a call - missing in PD/CD & Line View

• CSCvh99185 WLAN diags AP details only shows channels 36-48

• CSCvi24947 Display will not off while phone has one-way incoming intercom call

• CSCvi66235 PB: When configuring a Favorite, middle button can dial number by mistake when in Contact details

• CSCvi66773 PB: Pressing green button should not bring up call view when highlight on Unassigned

• CSCvi68937 8821 advertises dongle MAC instead of phone MAC via CDP

• CSCvi78358 8821 can't save debug command after reset or power-cycle

• CSCvj02218 Park resume is greyed out in 8821 registered in CME

• CSCvj07546 Phone de-registered due to re-IP during overnight testing

• CSCvj23342 Call could be dropped when OOR more than 1 minute

• CSCvj42007 DUT don't vibrate sometimes when pickup call with DND enable

• CSCvj43956 New call soft key not work while focus on BLF speed dial

• CSCvj44014 Back from intercom call details, phone's UI turn to blank

• CSCvj45498 Ringer shouldn't play thu headset in Australia network locale when inserting headset during ringing

• CSCvj46981 \"Battery charging\" toast not display when power charging with USB cable.

• CSCvj47001 Ringer for incoming call switches to headset after docked when ringer output is set to speaker

• CSCvj53208 White screen flash while charging powered off phone

• CSCvj54504 Blank call view after end the call on one line and then resume call on another line

• CSCvj54731 Should delay ringer output for 4 sec if 2nd call comes in immediately after 1st call is ended

• CSCvj55168 ip can be pinged after dhcp address released through \"wifi interface\"

• CSCvj55253 Can't move focus to other lines with nav-button when phone is in dialing.

• CSCvj64735 Voicemail icon shows on the second line and intercom line even there is only vm on first line

• CSCvj70382 Back to use correct username from wrong one, phone failed to connect to Auto AP with EAP-FAST

• CSCvj75229 Phone does not re-connect to first WLAN profile after disable/enable

• CSCvj84131 Decline not work on the line not configured to VM, when another line configured to VM

• CSCvj88754 Failed to Log Out from personal directory

• CSCvj94399 Sometimes(90%) ringer is very small in hold reversion state when ringer volume is maximized

• CSCvj94952 On Phone's LCD, the DN has not been changed after access hCluster successfully with EMCC method

• CSCvj96861 Application Button still works when DUT is not idle Although button priority is low

• CSCvk03109 When DNR is enabled and a higher priority MLPP call comes in, the ringer is not played on the phone.

• CSCvk09649 Incoming call will be auto answered when connect bluetooth headset to phone and hold the first call.

• CSCvk21292 8821 sipcc keep holding wakelock in OOR

• CSCvk25979 Phone eventually not able to receive auth response

• CSCvk30176 No response while press conf soft key after merge all on secured SRST

• CSCvk33875 Screenpng does not work when 8821 is sleeping

• CSCvk65315 Download application multiple times when press the application button

• CSCvm05950 Phone stuck at black screen during stress test

• CSCvm16421 EAP authentication triggered by wpa_supplicant got interrupted and causing de-registration

• CSCvm23580 8821 dhcp exit and reboot after switching wlan profiles

• CSCvm40695 4-way handshake got interrupted by reassoc request thereby causing de-registration

• CSCvm46026 8821 : Java crash and connectivity lost

• CSCvm47856 Multiple Vulnerabilities in linux

• CSCvm50336 CIAM alerts of Linux/Linux for cygnus: CVE-2018-1130, CVE-2018-11506, CVE-2018-11508

• CSCvm50340 CIAM alerts of Linux/Linux for cygnus for all phone models

• CSCvm50348 Multiple Vulnerabilities in linux for 8821 wireless phone

• CSCvm50349 Multiple Vulnerabilities in linux, port CSCvm11633 to 8821

• CSCvm50527 Linux Kernel Kerberos RxRPC Ticket Decoding Local Privilege Escalati ...

• CSCvm55729 Phone can't associate to AP after inter-profile roaming, enable new profile after OOR

• CSCvm58866 4-way handshake failure due to invalid MIC in M2

• CSCvm59233 cURL and libcurl NTLM Password Buffer Overflow Vulnerability (CVE-2018-14618)

• CSCvm60777 Linux Kernel alarm_timer_nsleep() Function Integer Overflow Vulnerability (CVE-2018-13053)

• CSCvm69529 CDP shows previous IP for WLAN interface via CDP instead of wired USB dongle interface when docked

• CSCvm70501 8821 should not download WLAN config file from hCluster after EMCC login

• CSCvm75535 Phone will not connect to 2.4GHz enabled WiFi profile from a 5GHz enabled WiFi profile vice versa

• CSCvm85526 Phone crashed when DHCP option 66 field configured with MaxLength

• CSCvm87461 Call drop automatically after blowing into the Cisco 521/522 headset for 3-5 times during call

• CSCvm91396 No beep tone for hold revert while the other line in RIU status

• CSCvm92798 Multiple Vulnerabilities in linux

• CSCvm92833 Linux Kernel MIDI Driver Local Privilege Escalation Vulnerability (CVE-2018-10902)

• CSCvm95451 XMLSoft libxml2 xmlXPathCompOpEval() Function NULL Pointer Dereference Vulnera... (CVE-2018-14404)

• CSCvm98027 GreenKey failed to work when setting phone to offhook dialing mode

• CSCvm99207 BusyBox huft_build Function Denial of Service Vulnerability (CVE-2015-9261)

• CSCvm99883 \"Feature is unavailable\" pops up on recipient phone UI on CME

• CSCvn35581 Multiple Vulnerabilities in openssl, part 2

• CSCvn37282 8821 phone freezes after receiving XSI msgs using priority 1

• CSCvn38253 \"MIC mismatch\" is seen in WLC log when 8821 fast roaming with 2802/3802 AP

• CSCvn49489 wpa_supplicant EAPOL-Key Messages Information Disclosure Vulnerability

• CSCvn60806 8821 phone Incoming Call Toast not display when ringing and phone screen keeps dark

• CSCvn63436 Linux Kernel ALSA Driver Local Use-After-Free Vulnerability (CVE-2018-19824)

• CSCvn67226 Qt BMP Image Handler Remote Denial of Service Vulnerability

• CSCvn71400 Pressing Green key should not answer two incoming calls at the same time

• CSCvn78117 Move the connected BT headset OOR, audio path will be switched to phone's headset within 10s

• CSCvn78225 Multiple Vulnerabilities in linux

• CSCvn81758 No ring for hold reversion after disconnecting another active call

• CSCvn97100 Pressing green button can not dial out speed dial on line view

• CSCvo08243 Trolltech Qt QBmpHandler BMP File Buffer Overflow Vulnerability (CVE-2018-19873)

• CSCvo14601 Redial via press green key twice does not work when using off hook dialing

• CSCvo32268 Ring plays thru headset if inserting headset during ringing while on dock & ringer output is Speaker

• CSCvo40605 Softkey associated with two-digit numbers can not be accessed by pressing the index number

• CSCvo43854 Multiple Vulnerabilities in libxml2

• CSCvo44367 Multiple Vulnerabilities in busybox

• CSCvo47495 Linux Kernel USB Subsystem Data Size Checks Handling Vulnerability (CVE-2018-20169)

• CSCvo48068 Favorites highlight shifted when access by pressing index # if contact /w long name is assigned

• CSCvo54699 Cisco IP Phone 8821 Series CDP and LLDP Denial of Service Vulnerability (CVE-2019-1684)

• CSCvo57138 Cisco Wireless IP Phone 8821 and 8821-EX Path Traversal Vulnerability

• CSCvo57629 Cisco Wireless IP Phone 8821 and 8821-EX Series Cross-Site Request Forgery Vulnerability

• CSCvo58414 Cisco Wireless IP Phone 8821 and 8821-EX Authorization Bypass Vulnerability

• CSCvo64862 8821 not receiving audio alerts from 3rd party Alerting software like Momentum