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CVE-2007-5639
The Nortel UNIStim IP Softphone 2050, IP Phone 1140E, and other Nortel IP Phone, Mobile Voice Client, and WLAN Handsets products allow…
High7.1EPSS 1.8%
- Published
- Updated
- Reserved
- Assigned by
- mitre
Description
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.
Scores
| Scored by | CVSS | Score | Vector |
|---|---|---|---|
| NVDNVD · Modified | 2.0 | High7.1 | AV:N/AC:M/Au:N/C:N/I:N/A:C |
- EPSS (exploitation in 30 days)
- 1.8% · top 22% of all CVEs (4 Nov 2026)
Loading the EPSS history…
The list uses the assigner's score when there is one, then CISA's, then NVD's: High 7.1.
Weakness
- n/a
Affected products
n/a
- affected n/a
References (6)
- http://www.csnc.ch/static/advisory/csnc/nortel_IP_phone_flooding_denial_of_service_v1.0.txt (opens in a new tab)x_refsource_MISCx_transferred
- 3273 (opens in a new tab)third-party-advisoryx_refsource_SREASONx_transferred
- 20071018 Nortel IP Phone Flooding Denial of Service (opens in a new tab)mailing-listx_refsource_BUGTRAQx_transferred
- 26122 (opens in a new tab)vdb-entryx_refsource_BIDx_transferred
- nortel-ipphone-spoof-dos(37253) (opens in a new tab)vdb-entryx_refsource_XFx_transferred
- http://support.nortel.com/go/main.jsp?cscat=BLTNDETAIL&id=654715 (opens in a new tab)x_refsource_CONFIRMx_transferred
Sources
The same CVE in the primary databases and aggregators, to check against.
- CVE.org record (opens in a new tab)
- CVE List JSON (GitHub) (opens in a new tab)
- NVD (opens in a new tab)
- FIRST EPSS (opens in a new tab)
- OSV.dev (opens in a new tab)
- GitHub Advisories (opens in a new tab)
- CIRCL Vulnerability-Lookup (opens in a new tab)
Badge for a README or a ticket
[](https://trackcve.app/cve/CVE-2007-5639)Record last updated .