CVE-2007-1826

Unspecified vulnerability in the IPSec Manager Service for Cisco Unified CallManager (CUCM) 5.0 before 5.0(4a)SU1 and Cisco Unified Presence Server (CUPS) 1.0 before 1.0(3) allows remote attackers to cause a denial of service (loss of cluster services) via a "specific UDP packet" to UDP port 8500, aka bug ID CSCsg60949.

Published: 2007-04-02 Last update: 2026-06-16 Assigner: [email protected] Source: [email protected]
NVD Status：Modified，CVE State: published
View at NVD, CVE.org, EUVD

CVE-2007-1826 is rated Moderate Risk (59.1/100): CVSS High severity, with medium exploitation likelihood (EPSS 1.98%). 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-2007-1826

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 1.36% 1.98% +0.61%
2 2026-04-26 1.26% 1.36% +0.10%
3 2025-03-30 — 1.26% —

Full EPSS history (12 records total)

Common vulnerability scoring system (CVSS) metrics for CVE-2007-1826

CVSS metrics for this CVE.

Base score Version Severity Vector Exploitability Impact Score source
7.8 2.0 HIGH
AV:N/AC:L/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:L)
Exploitation conditions are straightforward and predictable.
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.
 10.0 6.9 [email protected]

Weakness enumeration for CVE-2007-1826

Affected software / configurations for CVE-2007-1826

Vendor Product Version Raw CPE
cisco unified_callmanager 5.0 cpe:2.3:a:cisco:unified_callmanager:5.0:*:*:*:*:*:*:*
cisco unified_callmanager 5.0\(1\) cpe:2.3:a:cisco:unified_callmanager:5.0\(1\):*:*:*:*:*:*:*
cisco unified_callmanager 5.0\(2\) cpe:2.3:a:cisco:unified_callmanager:5.0\(2\):*:*:*:*:*:*:*
cisco unified_callmanager 5.0\(3\) cpe:2.3:a:cisco:unified_callmanager:5.0\(3\):*:*:*:*:*:*:*
cisco unified_callmanager 5.0\(3a\) cpe:2.3:a:cisco:unified_callmanager:5.0\(3a\):*:*:*:*:*:*:*
cisco unified_callmanager 5.0\(4\) cpe:2.3:a:cisco:unified_callmanager:5.0\(4\):*:*:*:*:*:*:*
cisco unified_presence_server 1.0 cpe:2.3:a:cisco:unified_presence_server:1.0:*:*:*:*:*:*:*
cisco unified_presence_server 1.0\(1\) cpe:2.3:a:cisco:unified_presence_server:1.0\(1\):*:*:*:*:*:*:*
cisco unified_presence_server 1.0\(2\) cpe:2.3:a:cisco:unified_presence_server:1.0\(2\):*:*:*:*:*:*:*

References for CVE-2007-1826

cvelogic Threat Intelligence