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CVE-2007-5638
The Nortel UNIStim IP Softphone 2050, IP Phone 1140E, and additional Nortel products from the IP Phone, Business Communications Manager…
Medium4.3EPSS 1.5%
- Published
- Updated
- Reserved
- Assigned by
- mitre
Description
The Nortel UNIStim IP Softphone 2050, IP Phone 1140E, and additional Nortel products from the IP Phone, Business Communications Manager (BCM), and other product lines, use only 65536 different values in the 32-bit ID number field of an RUDP datagram, which makes it easier for remote attackers to guess the RUDP ID and spoof messages. NOTE: this can be leveraged for an eavesdropping attack by sending many Open Audio Stream messages.
Scores
| Scored by | CVSS | Score | Vector |
|---|---|---|---|
| NVDNVD · Modified | 2.0 | Medium4.3 | AV:N/AC:M/Au:N/C:P/I:N/A:N |
- EPSS (exploitation in 30 days)
- 1.5% · top 26% 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: Medium 4.3.
Weakness
Affected products
n/a
- affected n/a
References (8)
- nortel-ipphone-unistim-audio-hijacking(37255) (opens in a new tab)vdb-entryx_refsource_XFx_transferred
- 27234 (opens in a new tab)third-party-advisoryx_refsource_SECUNIAx_transferred
- 41770 (opens in a new tab)vdb-entryx_refsource_OSVDBx_transferred
- http://www.csnc.ch/static/advisory/csnc/nortel_IP_phone_surveillance_mode_v1.0.txt (opens in a new tab)x_refsource_MISCx_transferred
- nortel-ipphone-audiostream-spoofing(42881) (opens in a new tab)vdb-entryx_refsource_XFx_transferred
- 3272 (opens in a new tab)third-party-advisoryx_refsource_SREASONx_transferred
- 20071018 Nortel IP Phone Surveillance Mode (opens in a new tab)mailing-listx_refsource_BUGTRAQx_transferred
- 26120 (opens in a new tab)vdb-entryx_refsource_BIDx_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-2007-5638)Record last updated .