CVE-2008-3801

Unspecified vulnerability in the Session Initiation Protocol (SIP) implementation in Cisco IOS 12.2 through 12.4 and Unified Communications Manager 4.1 through 6.1, when VoIP is configured, allows remote attackers to cause a denial of service (device or process reload) via unspecified valid SIP messages, aka Cisco Bug ID CSCsm46064, a different vulnerability than CVE-2008-3800 and CVE-2008-3802.

Published: 2008-09-26 Last update: 2026-06-16 Assigner: [email protected] Source: [email protected]
NVD Status：Modified，CVE State: published
View at NVD, CVE.org, EUVD

CVE-2008-3801 is rated Moderate Risk (60/100): CVSS High severity, with medium exploitation likelihood (EPSS 3.22%). EPSS rose +1.28% over the last day, indicating growing attacker interest. Review affected assets and schedule remediation.

Risk is dynamic; we continuously reassess and refresh what is shown on this page as upstream context changes.

Exploit prediction scoring system (EPSS) score for CVE-2008-3801

EPSS lead: Daily EPSS estimates relative likelihood of exploitation; percentile ranks this CVE among scored vulnerabilities (higher = more severe relative rank).

# Date Old EPSS score New EPSS score Delta (New - Old)
1 2026-06-15 1.93% 3.22% +1.28%
2 2025-06-03 2.09% 1.93% -0.16%
3 2025-03-30 — 2.09% —

Full EPSS history (11 records total)

Common vulnerability scoring system (CVSS) metrics for CVE-2008-3801

CVSS metrics for this CVE.

Base score Version Severity Vector Exploitability Impact Score source
7.1 2.0 HIGH
AV:N/AC:M/Au:N/C:N/I:N/A:C Click to expand
Access vector (AV:N)
Can be exploited remotely over network reachability.
Access complexity (AC:M)
Exploitation needs some favorable conditions, but not exceptional ones.
Authentication (AU:N)
No authentication is required.
Confidentiality impact (C:N)
No confidentiality impact.
Integrity impact (I:N)
No integrity impact.
Availability impact (A:C)
Complete availability impact.
 8.6 6.9 [email protected]

Weakness enumeration for CVE-2008-3801

Affected software / configurations for CVE-2008-3801

Vendor Product Version Raw CPE
cisco unified_callmanager 4.1 cpe:2.3:a:cisco:unified_callmanager:4.1:*:*:*:*:*:*:*
cisco unified_callmanager 4.2 cpe:2.3:a:cisco:unified_callmanager:4.2:*:*:*:*:*:*:*
cisco unified_callmanager 4.3 cpe:2.3:a:cisco:unified_callmanager:4.3:*:*:*:*:*:*:*
cisco unified_communications_manager 4.1 cpe:2.3:a:cisco:unified_communications_manager:4.1:*:*:*:*:*:*:*
cisco unified_communications_manager 5.0 cpe:2.3:a:cisco:unified_communications_manager:5.0:*:*:*:*:*:*:*
cisco unified_communications_manager 5.1 cpe:2.3:a:cisco:unified_communications_manager:5.1:*:*:*:*:*:*:*
cisco unified_communications_manager 6.1 cpe:2.3:a:cisco:unified_communications_manager:6.1:*:*:*:*:*:*:*
cisco ios 12.2 cpe:2.3:o:cisco:ios:12.2:*:*:*:*:*:*:*
cisco ios 12.3 cpe:2.3:o:cisco:ios:12.3:*:*:*:*:*:*:*
cisco ios 12.4 cpe:2.3:o:cisco:ios:12.4:*:*:*:*:*:*:*

References for CVE-2008-3801

URL Tags
http://secunia.com/advisories/31990 Third Party Advisory
http://secunia.com/advisories/32013 Third Party Advisory
http://www.cisco.com/en/US/products/products_security_advisory09186a0080a01562.shtml Vendor Advisory
http://www.cisco.com/en/US/products/products_security_advisory09186a0080a0156a.shtml Vendor Advisory
http://www.securityfocus.com/bid/31367 Third Party Advisory VDB Entry
http://www.securitytracker.com/id?1020939 Broken Link Third Party Advisory VDB Entry
http://www.securitytracker.com/id?1020942 Broken Link Third Party Advisory VDB Entry
http://www.vupen.com/english/advisories/2008/2670 Permissions Required
http://www.vupen.com/english/advisories/2008/2671 Permissions Required
https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A6047 Third Party Advisory
cvelogic Threat Intelligence