What’s Vulnerable › Vulnerabilities

CVE-2010-2834

• Severity: high (CVSS 7.8 v2.0)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 1.8% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2010-09-23 · updated 2026-06-16

Description

Cisco IOS 12.2 through 12.4 and 15.0 through 15.1, Cisco IOS XE 2.5.x and 2.6.x before 2.6.1, and Cisco Unified Communications Manager (aka CUCM, formerly CallManager) 6.x before 6.1(5)SU1, 7.x before 7.1(5), and 8.0 before 8.0(2) allow remote attackers to cause a denial of service (device reload or voice-services outage) via crafted SIP registration traffic over UDP, aka Bug IDs CSCtf72678 and CSCtf14987.

Affected products

• Cisco IOS: 12.1, 12.1t, 12.1xi, 12.1xj, 12.1xl, 12.1xm (+185)
• Cisco IOS XE: 2.5.0, 2.5.1, 2.6.0, 2.6.1
• Cisco Unified Communications Manager: 6.0, 6.0(1.2114.1), 6.0(1.2121.1), 6.0(1b), 6.1(1), 6.1(1a) (+34)

References

• http://www.cisco.com/en/US/products/products_security_advisory09186a0080b4a30f.shtml
• http://www.cisco.com/en/US/products/products_security_advisory09186a0080b4a313.shtml
• http://www.cisco.com/en/US/products/products_security_advisory09186a0080b4a30f.shtml
• http://www.cisco.com/en/US/products/products_security_advisory09186a0080b4a313.shtml

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