Unified Communications Manager vulnerabilitiesAnd the versions its exploited flaws hit.
Unified Communications Manager is made by Cisco. We track 233 published vulnerabilities listed under that exact name, across 306 versions. 2 of them are on the list of flaws known to be exploited, the newest added on 25 June 2026. Cisco lists newer releases under their own names, such as Unified Communications Manager Im and Presence Service, so check those pages too.
The most recent Unified Communications Manager flaw added to the known-exploited list is CVE-2026-20230, on 25 June 2026. We keep watching the known-exploited list.
Is Unified Communications Manager listed under other names? Yes.
Cisco also lists Unified Communications Manager under more specific names, such as Unified Communications Manager Im and Presence Service and Unified Communications Manager Im & Presence Service. Flaws listed only under those names are counted on their own pages, not here. If you run one of these, open its page for its own exploited flaws.
Which versions of Unified Communications Manager do the exploited flaws hit?
Each exploited flaw lists the versions it affects, usually as ranges. "14.0 to before 14su6" means from 14.0 up to, but not including, 14su6. Find your version, then patch.
- CVE-2026-20230Exploited list, 25 Jun 2026
Cisco Unified Communications Manager Server-Side Request Forgery (SSRF) Vulnerability
14.0 to before 14su615.0 to 15su4a - CVE-2021-44228Exploited list, 10 Dec 2021
Apache Log4j2 Remote Code Execution Vulnerability
before 11.5(1)
Which Unified Communications Manager vulnerabilities are being exploited?
2 flaws are on the government list of vulnerabilities known to be exploited. These are the ones criminals are using now, so they go first, whatever their severity score says.
- 8.6Cisco Unified Communications Manager Server-Side Request Forgery (SSRF) Vulnerability
Cisco Unified Communications Manager (Unified CM) and Cisco Unified Communications Manager Session Management Edition (Unified CM SME) contain a server-side request forgery (SSRF) Vulnerability that could allow an...
- 10.0Apache Log4j2 Remote Code Execution Vulnerability
Apache Log4j2 contains a vulnerability where JNDI features do not protect against attacker-controlled JNDI-related endpoints, allowing for remote code execution.
Which Unified Communications Manager flaws are most likely to be used?
Ranked by the latest exploit-likelihood forecast: the chance each flaw is used in an attack in the next 30 days. A high severity score on its own doesn't tell you that. Flaws shared by many other makers' products are left out.
- 88%
A vulnerability in Cisco Unified Communications Manager (Unified CM) and Cisco Unified Communications Manager Session Management Edition (Unified CM SME) could allow an unauthenticated, remote attacker to conduct...
- 57%CVE-2008-0027Critical
Heap-based buffer overflow in the Certificate Trust List (CTL) Provider service (CTLProvider.exe) in Cisco Unified Communications Manager (CUCM) 4.2 before 4.2(3)SR3 and 4.3 before 4.3(1)SR1, and CallManager 4.0 and...
- 26%CVE-2011-3315High
Directory traversal vulnerability in Cisco Unified Communications Manager (CUCM) 5.x and 6.x before 6.1(5)SU2, 7.x before 7.1(5b)SU2, and 8.x before 8.0(3), and Cisco Unified Contact Center Express (aka Unified CCX...
- 25%CVE-2011-1610Medium
Multiple SQL injection vulnerabilities in xmldirectorylist.jsp in the embedded Apache HTTP Server component in Cisco Unified Communications Manager (aka CUCM, formerly CallManager) 6.x before 6.1(5)su3, 7.x before...
- 23%CVE-2013-5528Medium
Directory traversal vulnerability in the Tomcat administrative web interface in Cisco Unified Communications Manager allows remote authenticated users to read arbitrary files via directory traversal sequences in an...
- 20%CVE-2011-1609High
SQL injection vulnerability in Cisco Unified Communications Manager (aka CUCM, formerly CallManager) 6.x before 6.1(5)su2, 7.x before 7.1(5)su1, 8.0 before 8.0(3), and 8.5 before 8.5(1) allows remote authenticated...
- 9.6%CVE-2006-5277Critical
Off-by-one error in the Certificate Trust List (CTL) Provider service (CTLProvider.exe) in Cisco Unified Communications Manager (CUCM, formerly CallManager) before 20070711 allow remote attackers to execute arbitrary...
- 8.9%CVE-2006-5278Critical
Integer overflow in the Real-Time Information Server (RIS) Data Collector service (RisDC.exe) in Cisco Unified Communications Manager (CUCM, formerly CallManager) before 20070711 allow remote attackers to execute...
- 8.6%CVE-2010-3039Medium
/usr/local/cm/bin/pktCap_protectData in Cisco Unified Communications Manager (aka CUCM, formerly CallManager) 6, 7, and 8 allows remote authenticated administrators to execute arbitrary commands via shell...
Running Unified Communications Manager? We'll keep checking.
Looking flaws up one at a time doesn't scale. Tell us what you run once, and we tell you which flaws matter to you, in what order, and keep watching for new ones.
- Tell us what you runPick your software from a list, or let us work it out from your website.
- We match it to every flawOver 400,000 published flaws, checked against your list.
- Ranked by real-world riskA 0 to 100 score, led by evidence criminals are using it.
- Told as soon as we knowAn alert by email, in the app or by webhook to your own tools.
Free plan, no card needed. Nothing to install.
1 flaw being exploited affects software Acme tracks
Cisco Unified Communications Manager (Unified CM) and Cisco Unified Communications Manager Session Management Edition (Unified CM SME) contain a server-side request forgery (SSRF) Vulnerability that could allow an unauthenticated, remote attacker to write files to the underlying operating system that could be used later to elevate to root.
- Matched to
- Unified Communications Manager on Acme's software list
- What to do
- Patch first, then check for signs of use
Sent to the alert recipients Acme chose. Also in the app and to Acme's webhook.
We track 233 published vulnerabilities listed under the name Unified Communications Manager, across 306 versions. The most recent Unified Communications Manager flaw added to the known-exploited list is CVE-2026-20230, on 25 June 2026.
2 are on the list of flaws known to be exploited. The most recently added are CVE-2026-20230 and CVE-2021-44228.
Cisco also lists Unified Communications Manager under more specific names, such as Unified Communications Manager Im and Presence Service and Unified Communications Manager Im & Presence Service. Flaws listed only under those names are counted on their own pages, not here. Open the release you run to see its own list.
Each flaw names its own versions, usually as ranges. The newest, CVE-2026-20230, affects 14.0 to before 14su6, 15.0 to 15su4a. The versions for every exploited flaw are listed on this page.
Create a Precursor Intelligence account and track Unified Communications Manager. We match it against every published flaw, give each one a risk score from 0 to 100 and keep watching, so you hear about new ones as soon as we know, by email, in the app or by webhook.