CVE-2007-5639 json
The Nortel UNIStim IP Softphone 2050, IP Phone 1140E, and other Nortel IP Phone, Mobile Voice Client, and WLAN Handsets products allow remo…
published 2007-10-23 19 y ago modified 2026-06-16 4 mo ago also EUVD-2007-5611
- cvss
- 7.1
- version 2.0, NVD
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 1.8%
- EPSS 1.8% chance of exploitation in 30 days, percentile 78%
- public exploits
- 0
- none known
Summary
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.
Patch / fix
Exploit prediction
1.79% chance of exploitation in the next 30 days, higher than 78% of all scored CVEs (FIRST EPSS, 2026-11-08).
Exploits and checks
- csnc.ch http://www.csnc.ch/static/advisory/csnc/nortel_IP_phone_flooding_denial_of_service_v1.0.txt referenced PoC, tagged "exploit" by a source, unverified
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| NVD | 2.0 | 7.1 | AV:N/AC:M/Au:N/C:N/I:N/A:C |
References
-
securityfocus.com
/bid/26122
vdb-entry, patch
-
support.nortel.com
/go/main.jsp?cscat=BLTNDETAIL&id=654715
patch
-
csnc.ch
/static/advisory/csnc/nortel_IP_phone_flooding_denial_of_service_v1.0.txt
exploit
-
securityreason.com
/securityalert/3273
third-party-advisory
-
securityfocus.com
/archive/1/482480/100/0/threaded
mailing-list
-
exchange.xforce.ibmcloud.com
/vulnerabilities/37253
vdb-entry
Sources
- CVE List CVE-2007-5639
- NVD CVE-2007-5639
Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.