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CVE-2008-0027

59
FAUCET Score

CVE-2008-0027 is a critical heap-based buffer overflow vulnerability in the Certificate Trust List (CTL) Provider service of Cisco Unified Communications Manager (CUCM) and CallManager, affecting versions prior to 4.2(3)SR3, 4.3(1)SR1, and 4.1(3)SR5c respectively. This flaw allows unauthenticated remote attackers to trigger a denial of service or execute arbitrary code by sending a crafted, long request. With a CVSS score of 10.0, it represents a severe risk with high impact on confidentiality, integrity, and availability. Despite its high severity, there is no evidence of active exploitation, public exploit code (Metasploit, Nuclei, ExploitDB), or significant community discussion or media coverage.

Impacted Technologies

VendorProductVersion(s)CPE
4.0CPE matchmatch criteria
cpe:2.3:a:cisco:unified_callmanager:4.0:*:*:*:*:*:*:*
4.1CPE matchmatch criteria
cpe:2.3:a:cisco:unified_callmanager:4.1:*:*:*:*:*:*:*
4.1\(3\)sr4CPE matchmatch criteria
cpe:2.3:a:cisco:unified_callmanager:4.1\(3\)sr4:*:*:*:*:*:*:*
4.1\(3\)sr5CPE matchmatch criteria
cpe:2.3:a:cisco:unified_callmanager:4.1\(3\)sr5:*:*:*:*:*:*:*
4.1\(3\)sr5bCPE matchmatch criteria
cpe:2.3:a:cisco:unified_callmanager:4.1\(3\)sr5b:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 2.0

10.0HIGH

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

Confidentiality Impact
COMPLETE
Integrity Impact
COMPLETE
Availability Impact
COMPLETE
Access Vector
NETWORK
Access Complexity
LOW
Authentication
NONE
Exploitability Score
10.0
Impact Score
10.0
CvssVersion
2.0

Exploit Intelligence

EPSS Score
57.11%
Probability of exploitation in next 30 days
EPSS Percentile
99.0%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.5711 is in the 98th percentile among its peer group of 51,551 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.1 Bluesky, 0.1 Mastodon, and 0.4 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

dvlabs.tippingpoint.com / advisory/TPTI-08-02
secunia.com / advisories/28530
securityreason.com / securityalert/3551
exchange.xforce.ibmcloud.com / vulnerabilities/39704
cisco.com / en/US/products/products_security_advisory09186a0080932c61.shtml
Patch
securityfocus.com / archive/1/486432/100/0/threaded
securityfocus.com / bid/27313
securitytracker.com / id
vupen.com / english/advisories/2008/0171