The Certificate Authority Proxy Function (CAPF) service in Cisco Unified Communications Manager 5.x before 5.1(3e) and 6.x before 6.1(3) allows remote attackers to cause a denial of service (voice service outage) by sending malformed input over a TCP session in which the "client terminates prematurely."
Published Jan 22, 2009
4.3
MEDIUMCVSS 2.0
EPSS 0.89%
Description
The Certificate Authority Proxy Function (CAPF) service in Cisco Unified Communications Manager 5.x before 5.1(3e) and 6.x before 6.1(3) allows remote attackers to cause a denial of service (voice service outage) by sending malformed input over a TCP session in which the "client terminates prematurely."
Affected products
No data.
- 5.0
- 5.0_1
- 5.0_2
- 5.0_3
- 5.0_3a
- 5.0_4
- 5.0_4a
- 5.0_4a_su1
- 5.1
- 5.1
- 5.1
- 5.1
- 5.1
- 5.1
- 5.1
- 5.1
- 5.1\(1\)
- 5.1\(2\)
- 5.1\(3c\)
- 5.1.2
- 5.1_\(2a\)
- 5.1_1
- 5.1_2
- 5.1_2a
- 5.1_2b
- 5.1_3a
- 6.0
- 6.0
- 6.0
- 6.0_1
- 6.0_1a
- 6.1
- 6.1
- 6.1\(2\)
- 6.1.0
- 6.1_1a
No data.
No Red Hat product state for this CVE.
No package ranges for this CVE.
Remediation
No remediation recorded yet.
Metrics
No CVSS v4.0 score for this CVE.
No CVSS v3.1 score for this CVE.
No CVSS v3.0 score for this CVE.
AV:N/AC:M/Au:N/C:N/I:N/A:P
This CVE is not in the KEV list.
No CISA SSVC assessment for this CVE yet.
Estimated probability of exploitation in the wild in the next 30 days (FIRST EPSS). As of Oct 2, 2026.
Score over time
2022–2026- EPSS v2
- EPSS v3
- EPSS v4
- EPSS v5
Percentile over time
- EPSS v2
- EPSS v3
- EPSS v4
- EPSS v5
Table of values (10 key points)
Flat stretches are collapsed; showing up to 120 newest points.
| Date | Score | Percentile | Model |
|---|---|---|---|
| Oct 2, 2026 | 0.89% (0.00891) | 57.97th | v5 (v2026.06.15) |
| Jun 15, 2026 | 0.89% (0.00891) | 54.54th | v5 (v2026.06.15) |
| Mar 17, 2025 | 0.53% (0.00529) | 65.22th | v4 (v2025.03.14) |
| Dec 12, 2024 | 2.25% (0.02254) | 89.98th | v3 (v2023.03.01) |
| May 21, 2024 | 2.25% (0.02254) | 89.58th | v3 (v2023.03.01) |
| Mar 7, 2023 | 2.09% (0.02090) | 87.33th | v3 (v2023.03.01) |
| Mar 6, 2023 | 1.32% (0.01319) | 71.27th | v2 (v2022.01.01) |
| Feb 23, 2023 | 1.32% (0.01319) | 71.23th | v2 (v2022.01.01) |
| Apr 1, 2022 | 1.32% (0.01319) | 69.22th | v2 (v2022.01.01) |
| Feb 4, 2022 | 1.32% (0.01319) | 44.98th | v2 (v2022.01.01) |
References (6)
- http://secunia.com/advisories/33588 third-party-advisoryx_refsource_SECUNIAVendor Advisory
- http://www.cisco.com/en/US/products/products_security_advisory09186a0080a61928.shtml vendor-advisoryx_refsource_CISCOVendor Advisory
- http://www.securityfocus.com/bid/33379 vdb-entryx_refsource_BID
- http://www.securitytracker.com/id?1021620 vdb-entryx_refsource_SECTRACK
- http://www.vupen.com/english/advisories/2009/0213 vdb-entryx_refsource_VUPEN
- https://exchange.xforce.ibmcloud.com/vulnerabilities/48139 vdb-entryx_refsource_XF
| Link | Providers | Tags |
|---|---|---|
| http://secunia.com/advisories/33588 | third-party-advisoryx_refsource_SECUNIAVendor Advisory | |
| http://www.cisco.com/en/US/products/products_security_advisory09186a0080a61928.shtml | vendor-advisoryx_refsource_CISCOVendor Advisory | |
| http://www.securityfocus.com/bid/33379 | vdb-entryx_refsource_BID | |
| http://www.securitytracker.com/id?1021620 | vdb-entryx_refsource_SECTRACK | |
| http://www.vupen.com/english/advisories/2009/0213 | vdb-entryx_refsource_VUPEN | |
| https://exchange.xforce.ibmcloud.com/vulnerabilities/48139 | vdb-entryx_refsource_XF |
Change history (0)
No recorded changes yet.