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CVE-2009-0057

14
FAUCET Score

CVE-2009-0057 describes a denial-of-service vulnerability in the Certificate Authority Proxy Function (CAPF) service of Cisco Unified Communications Manager versions 5.x before 5.1(3e) and 6.x before 6.1(3). An unauthenticated remote attacker can exploit this by sending malformed input during a prematurely terminated TCP session, leading to a voice service outage. This vulnerability has a CVSS score of 4.3 (medium severity), indicating a network-based attack with medium complexity and partial availability impact. There is no evidence of active exploitation, public exploit code (Metasploit, Nuclei, ExploitDB), or significant community discussion or media coverage surrounding this CVE.

Impacted Technologies

VendorProductVersion(s)CPE
5.0CPE matchmatch criteria
cpe:2.3:a:cisco:unified_communications_manager:5.0:*:*:*:*:*:*:*
5.0_1CPE matchmatch criteria
cpe:2.3:a:cisco:unified_communications_manager:5.0_1:*:*:*:*:*:*:*
5.0_2CPE matchmatch criteria
cpe:2.3:a:cisco:unified_communications_manager:5.0_2:*:*:*:*:*:*:*
5.0_3CPE matchmatch criteria
cpe:2.3:a:cisco:unified_communications_manager:5.0_3:*:*:*:*:*:*:*
5.0_3aCPE matchmatch criteria
cpe:2.3:a:cisco:unified_communications_manager:5.0_3a:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 2.0

4.3MEDIUM

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

Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
PARTIAL
Access Vector
NETWORK
Access Complexity
MEDIUM
Authentication
NONE
Exploitability Score
8.6
Impact Score
2.9
CvssVersion
2.0

Exploit Intelligence

EPSS Score
0.89%
Probability of exploitation in next 30 days
EPSS Percentile
55.7%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0089 is in the 13th percentile among its peer group of 19,958 CVEs.

Social Chatter

No social media mentions found for this CVE.

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

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.0 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/33588
Vendor Advisory
exchange.xforce.ibmcloud.com / vulnerabilities/48139
cisco.com / en/US/products/products_security_advisory09186a0080a61928.shtml
Vendor Advisory
securityfocus.com / bid/33379
securitytracker.com / id
vupen.com / english/advisories/2009/0213