CVE-2008-4543
HIGH · CVSS 7.1EPSS 1.8%EU EUVD
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.
Key facts
- CVSS score
- 7.1 (v2.0)
- Severity
- HIGH
- CVSS vector
AV:N/AC:M/Au:N/C:N/I:N/A:C- Weakness (CWE)
- CWE-399
- EPSS score
- 1.8% (79th percentile)
- In CISA KEV
- No
- In EU EUVD
- Yes (EUVD-2008-4524)
- Published
- October 13, 2008
- NVD last modified
- June 16, 2026
- Status
- Modified
EU Vulnerability Database (EUVD)
This vulnerability is also tracked by ENISA as EUVD-2008-4524 in the EU Vulnerability Database. Last updated in EUVD on August 7, 2024.
View on the EU Vulnerability DatabaseAffected products
- cisco / unity
- cisco / unity
- cisco / unity
- cisco / unity
- cisco / unity
- cisco / unity
- cisco / unity
- cisco / unity
- cisco / unity
- cisco / unity
- cisco / unity
- cisco / unity
References
- http://secunia.com/advisories/32187(Vendor Advisory)
- http://securitytracker.com/id?1021013
- http://www.cisco.com/en/US/products/products_security_response09186a0080a0d861.html(Vendor Advisory)
- http://www.securityfocus.com/bid/31642
- http://www.voipshield.com/research-details.php?id=128
- http://www.vupen.com/english/advisories/2008/2771
- https://exchange.xforce.ibmcloud.com/vulnerabilities/45743
Last updated September 17, 2026 · Source: NVD, CISA KEV, FIRST.org EPSS
Query CVEs from your AI assistant
The CVE/NVD Explorer brain answers CVE questions directly inside Claude, ChatGPT, or any MCP assistant — always up to date, no setup. Add it once and stop pasting advisories into chat.
Add the CVE brain