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CVE-2008-3801

22
FAUCET Score

CVE-2008-3801 is an unspecified vulnerability in the Session Initiation Protocol (SIP) implementation of Cisco IOS (versions 12.2-12.4) and Cisco Unified Communications Manager (versions 4.1-6.1) when VoIP is configured. This flaw allows remote attackers to trigger a denial of service, leading to a device or process reload, through specially crafted but valid SIP messages. With a CVSS score of 7.1, it is considered highly severe, requiring medium attack complexity but no authentication, and resulting in a complete loss of availability. There is no evidence of active exploitation, public exploit code, or significant community discussion surrounding this vulnerability.

Impacted Technologies

VendorProductVersion(s)CPE
4.1CPE matchmatch criteria
cpe:2.3:a:cisco:unified_callmanager:4.1:*:*:*:*:*:*:*
4.2CPE matchmatch criteria
cpe:2.3:a:cisco:unified_callmanager:4.2:*:*:*:*:*:*:*
4.3CPE matchmatch criteria
cpe:2.3:a:cisco:unified_callmanager:4.3:*:*:*:*:*:*:*
4.1CPE matchmatch criteria
cpe:2.3:a:cisco:unified_communications_manager:4.1:*:*:*:*:*:*:*
5.0CPE matchmatch criteria
cpe:2.3:a:cisco:unified_communications_manager:5.0:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 2.0

7.1HIGH

AV:N/AC:M/Au:N/C:N/I:N/A:C

Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
COMPLETE
Access Vector
NETWORK
Access Complexity
MEDIUM
Authentication
NONE
Exploitability Score
8.6
Impact Score
6.9
CvssVersion
2.0

Exploit Intelligence

EPSS Score
3.22%
Probability of exploitation in next 30 days
EPSS Percentile
86.9%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0322 is in the 46th percentile among its peer group of 8,920 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.1 Reddit, 0.1 Bluesky, 0.1 Mastodon, and 0.2 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.1 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Remediation records are not available for this CVE.

References

secunia.com / advisories/31990
Third Party Advisory
secunia.com / advisories/32013
Third Party Advisory
oval.cisecurity.org / repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A6047
Third Party Advisory
cisco.com / en/US/products/products_security_advisory09186a0080a01562.shtml
Vendor Advisory
cisco.com / en/US/products/products_security_advisory09186a0080a0156a.shtml
Vendor Advisory
securityfocus.com / bid/31367
Third Party AdvisoryVDB Entry
securitytracker.com / id
Broken LinkThird Party AdvisoryVDB Entry
securitytracker.com / id
Broken LinkThird Party AdvisoryVDB Entry
vupen.com / english/advisories/2008/2670
Permissions Required
vupen.com / english/advisories/2008/2671
Permissions Required