Cisco Unified Communications Manager 12.0 · Version Status
Cisco Unified Communications Manager 12.0 End of Life Date
Cisco Unified Communications Manager 12.0 end-of-life date, support status, and CVE risk. Data reconciled from official vendor documentation and endoflife.date at every build; the source of each date is on the product page.
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Cisco Unified Communications Manager 12.0 is past end of life. This version no longer receives security patches. 1849 days past EOL — migrate to a supported version immediately.
EOL Date
Aug 17, 2021
1849 days past EOL
Latest Release
12.0
Standard release
Release Date
—
Cisco Unified Communications Manager 12.0 series
Extended Support
Aug 31, 2023
Extended support · ended
Lifecycle detail
It has been without security patches for 5 years and 1 month.
Attack Surface
10/30 Medium tier
CISA KEV Exposure
20/20 Named in CISA KEV
Extended Support
0/10 Available
EOL Risk Score™ — proprietary methodology by endoflife.ai. Factors: EOL recency, attack surface breadth, CISA KEV catalog presence, extended support availability. Updated at every build.
Methodology → ·
View score card →
Extended Support
Extended Cisco Unified Communications Manager 12.0 support is available
Commercial vendors offer security patches beyond EOL. Compare your options.
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All Cisco Unified Communications Manager Versions
| Version | Latest | EOL Date | Status |
|---|
| 3.x |
3.x |
Jul 22, 2008 |
EOL |
| 4.1 |
4.1 |
May 15, 2009 |
EOL |
| 4.2 |
4.2 |
May 15, 2009 |
EOL |
| 4.3 |
4.3 |
Jan 25, 2012 |
EOL |
| 5.0 |
5.0 |
Jun 30, 2009 |
EOL |
| 5.1 |
5.1 |
Feb 13, 2010 |
EOL |
| 6.0 |
6.0 |
May 2, 2010 |
EOL |
| 6.1 |
6.1 |
Sep 3, 2011 |
EOL |
What does Cisco Unified Communications Manager 12.0 end of life mean?
When Cisco Unified Communications Manager 12.0 reaches end of life, the maintainers stop issuing security patches for this version. CVEs discovered after the EOL date are publicly disclosed on the National Vulnerability Database with no patch available. Exploit code frequently appears on GitHub within days of disclosure.
The CVE blind spot: Most vulnerability scanners check for known CVEs but do not flag the ongoing accumulation of unpatched vulnerabilities in EOL software versions. Running Cisco Unified Communications Manager 12.0 past its EOL date creates a permanently growing attack surface that standard security tooling will not surface.
Migrate to Cisco Unified Communications Manager 15 or implement compensating controls — network segmentation, enhanced monitoring, restricted access — while migration is underway.
Frequently Asked Questions
When does Cisco Unified Communications Manager 12.0 reach end of life?
Cisco Unified Communications Manager 12.0 reached end of life on August 17, 2021. This version is no longer receiving security patches.
Is Cisco Unified Communications Manager 12.0 still supported?
No. Cisco Unified Communications Manager 12.0 reached end of life on August 17, 2021 and is no longer receiving security patches.
What should I upgrade to from Cisco Unified Communications Manager 12.0?
What are the security risks of running Cisco Unified Communications Manager 12.0 past EOL?
When Cisco Unified Communications Manager 12.0 reaches end of life, the maintainers stop issuing security patches. Any CVEs disclosed after the EOL date accumulate with no remediation path. Most vulnerability scanners do not flag this — it is the CVE blind spot. Organizations running EOL Cisco Unified Communications Manager should migrate immediately or implement compensating controls.