CVE-2007-5639
HIGH · CVSS 7.1EPSS 1.8%EU EUVD
The Nortel UNIStim IP Softphone 2050, IP Phone 1140E, and other Nortel IP Phone, Mobile Voice Client, and WLAN Handsets products allow remote attackers to cause a denial of service (device hang) via a flood of Mute and UnMute messages that have a spoofed source IP address for the Signaling Server.
Key facts
- CVSS score
- 7.1 (v2.0)
- Severity
- HIGH
- CVSS vector
AV:N/AC:M/Au:N/C:N/I:N/A:C- EPSS score
- 1.8% (78th percentile)
- In CISA KEV
- No
- In EU EUVD
- Yes (EUVD-2007-5611)
- Published
- October 23, 2007
- NVD last modified
- June 16, 2026
- Status
- Modified
EU Vulnerability Database (EUVD)
This vulnerability is also tracked by ENISA as EUVD-2007-5611 in the EU Vulnerability Database. Last updated in EUVD on August 7, 2024.
View on the EU Vulnerability DatabaseAffected products
- nortel / ip audio conference phone 2033
- nortel / ip phone 1110
- nortel / ip phone 1120e
- nortel / ip phone 1140e
- nortel / ip phone 1150e
- nortel / ip phone 2001
- nortel / ip phone 2002
- nortel / ip phone 2004
- nortel / ip softphone 2050
- nortel / mobile voice client 2050
- nortel / wlan handset 2210
- nortel / wlan handset 2211
- nortel / wlan handset 2212
- nortel / wlan handset 6120
- nortel / wlan handset 6140
References
- http://securityreason.com/securityalert/3273
- http://support.nortel.com/go/main.jsp?cscat=BLTNDETAIL&id=654715(Patch)
- http://www.csnc.ch/static/advisory/csnc/nortel_IP_phone_flooding_denial_of_service_v1.0.txt(Exploit)
- http://www.securityfocus.com/archive/1/482480/100/0/threaded
- http://www.securityfocus.com/bid/26122(Patch)
- https://exchange.xforce.ibmcloud.com/vulnerabilities/37253
Last updated September 17, 2026 · Source: NVD, CISA KEV, FIRST.org EPSS
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