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CVE-2010-2834

HIGH
7.8NVD

Summary

generated automatically from NVD data

CVE-2010-2834 affects Cisco IOS (12.2 through 12.4 and 15.0 through 15.1), Cisco IOS XE 2.5.x and 2.6.x, and Cisco Unified Communications Manager (CUCM) 6.x, 7.x and 8.0 in versions preceding those named in the NVD description. A remote, unauthenticated attacker can send crafted SIP registration traffic over UDP, causing a denial of service through a device reload or a voice-services outage. The flaw is tracked as Cisco Bug IDs CSCtf72678 and CSCtf14987 and carries a CVSS v2.0 score of 7.8 (HIGH).

NVD 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.

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EPSS · FIRST.org

1.8%probability of exploitation in the next 30 days

Higher than 77% of scored CVEs

EPSS (Exploit Prediction Scoring System) estimates, from observed exploitation activity, how likely a CVE is to be exploited in the next 30 days. It complements CVSS, which measures severity, not likelihood. Score of 2026-10-19, recomputed daily by FIRST.org.

CVSS v2.0 Score

7.8
/ 10.0
HIGH
AV:N/AC:L/Au:N/C:N/I:N/A:C

Information

Published
23 sept. 2010
Updated
16 juin 2026
Status
Modified
Source
psirt@cisco.com

Affected products

cisco ios
Versions : 12.1, 12.1t, 12.1xi, 12.1xj, 12.1xl
cisco ios xeAll Cisco IOS XE CVEs →
Versions : 2.5.0, 2.5.1, 2.6.0, 2.6.1
cisco unified communications manager
Versions : 6.0, 6.0\(1.2114.1\), 6.0\(1.2121.1\), 6.0\(1b\), 6.1\(1\)

Weaknesses (CWE)

NVD-CWE-noinfo

References (4)

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