Cisco Unity 4.x before 4.2(1)ES161, 5.x before 5.0(1)ES53, and 7.x before 7.0(2)ES8, when using anonymous authentication (aka native Unity authentication), allows remote attackers to cause a denial of service (session exhaustion) via a large number of connections
Published Oct 13, 2008
7.1
HIGHCVSS 2.0
EPSS 1.83%
Description
Cisco Unity 4.x before 4.2(1)ES161, 5.x before 5.0(1)ES53, and 7.x before 7.0(2)ES8, when using anonymous authentication (aka native Unity authentication), allows remote attackers to cause a denial of service (session exhaustion) via a large number of connections.
Affected products
No data.
- ≤ 4.2\(1\)
- ≤ 5.0\(1\)
- ≤ 7.0\(2\)
- 4.0
- 4.0\(1\)
- 4.0\(2\)
- 4.0\(3\)
- 4.0\(3\)
- 4.0\(4\)
- 4.0\(4\)
- 4.0\(5\)
- 4.1\(1\)
- 5.0
- 7.0
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:C
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 1, 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 1, 2026 | 1.83% (0.01834) | 78.13th | v5 (v2026.06.15) |
| Jun 15, 2026 | 1.83% (0.01834) | 76.06th | v5 (v2026.06.15) |
| Mar 17, 2025 | 1.19% (0.01189) | 77.38th | v4 (v2025.03.14) |
| Dec 12, 2024 | 2.30% (0.02304) | 90.09th | v3 (v2023.03.01) |
| Feb 10, 2024 | 2.13% (0.02133) | 88.91th | v3 (v2023.03.01) |
| Mar 7, 2023 | 1.98% (0.01978) | 86.95th | 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 (7)
- http://secunia.com/advisories/32187 third-party-advisoryx_refsource_SECUNIAVendor Advisory
- http://securitytracker.com/id?1021013 vdb-entryx_refsource_SECTRACK
- http://www.cisco.com/en/US/products/products_security_response09186a0080a0d861.html vendor-advisoryx_refsource_CISCOVendor Advisory
- http://www.securityfocus.com/bid/31642 vdb-entryx_refsource_BID
- http://www.voipshield.com/research-details.php?id=128 x_refsource_MISC
- http://www.vupen.com/english/advisories/2008/2771 vdb-entryx_refsource_VUPEN
- https://exchange.xforce.ibmcloud.com/vulnerabilities/45743 vdb-entryx_refsource_XF
| Link | Providers | Tags |
|---|---|---|
| http://secunia.com/advisories/32187 | third-party-advisoryx_refsource_SECUNIAVendor Advisory | |
| http://securitytracker.com/id?1021013 | vdb-entryx_refsource_SECTRACK | |
| http://www.cisco.com/en/US/products/products_security_response09186a0080a0d861.html | vendor-advisoryx_refsource_CISCOVendor Advisory | |
| http://www.securityfocus.com/bid/31642 | vdb-entryx_refsource_BID | |
| http://www.voipshield.com/research-details.php?id=128 | x_refsource_MISC | |
| http://www.vupen.com/english/advisories/2008/2771 | vdb-entryx_refsource_VUPEN | |
| https://exchange.xforce.ibmcloud.com/vulnerabilities/45743 | vdb-entryx_refsource_XF |
Change history (0)
No recorded changes yet.