CVE-2007-5537

Name: CVE-2007-5537
Creator: NVD / NIST
Published: 2007-10-18T00:17:00+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

UnknownEPSS 1.98%

Last modified Jun 16, 2026

CVE-2007-5537 is a vulnerability of currently unknown severity. Cisco Unified Communications Manager (CUCM, formerly CallManager) 5.1 before 5.1(2), and Unified CallManager 5.0, allow remote attackers to cause a denial of service (kernel panic) via a flood of SIP INVITE messages to UDP port 5060, which triggers resource exhaustion, aka CSCsi75822.. EPSS estimates a 1.98% chance of exploitation in the next 30 days.

Description

Cisco Unified Communications Manager (CUCM, formerly CallManager) 5.1 before 5.1(2), and Unified CallManager 5.0, allow remote attackers to cause a denial of service (kernel panic) via a flood of SIP INVITE messages to UDP port 5060, which triggers resource exhaustion, aka CSCsi75822.

Metrics

EPSS Probability

1.98%

78.0th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-399

Affected Software

Vendor	Product	Versions
Cisco	Unified Callmanager	5.0
Cisco	Unified Communications Manager	<= 5.1\(2\)

References

Timeline

Published: Oct 18, 2007
Last Modified: Jun 16, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2007-5537?

How severe is CVE-2007-5537?

Severity scoring for CVE-2007-5537 is pending analysis. The EPSS model estimates a 1.98% probability of exploitation in the next 30 days.

How do I fix CVE-2007-5537?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2007-5537?

Run a free Strix scan to check your systems for this vulnerability.

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Source: NVD / NIST