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CVE-2007-5636
Buffer overflow in the Nortel UNIStim IP Softphone 2050 allows remote attackers to cause a denial of service (application abort) and…
High7.5EPSS 6.7%
- Published
- Updated
- Reserved
- Assigned by
- mitre
Description
Buffer overflow in the Nortel UNIStim IP Softphone 2050 allows remote attackers to cause a denial of service (application abort) and possibly execute arbitrary code via a flood of invalid characters to the RTCP port (5678/udp) that triggers a Windows error message, aka "extraneous messaging."
Scores
| Scored by | CVSS | Score | Vector |
|---|---|---|---|
| NVDNVD · Modified | 2.0 | High7.5 | AV:N/AC:L/Au:N/C:P/I:P/A:P |
- EPSS (exploitation in 30 days)
- 6.7% · top 6.1% 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 7.5.
Weakness
Affected products
n/a
- affected n/a
References (9)
- 20071018 Nortel UNIStim IP Softphone Buffer-Overflow (opens in a new tab)mailing-listx_refsource_BUGTRAQx_transferred
- 27252 (opens in a new tab)third-party-advisoryx_refsource_SECUNIAx_transferred
- 3271 (opens in a new tab)third-party-advisoryx_refsource_SREASONx_transferred
- http://www.csnc.ch/static/advisory/csnc/nortel_UNIStim_IP_softphone_buffer-overflow_v1.0.txt (opens in a new tab)x_refsource_MISCx_transferred
- http://support.nortel.com/go/main.jsp?cscat=BLTNDETAIL&id=655203 (opens in a new tab)x_refsource_CONFIRMx_transferred
- ADV-2007-3540 (opens in a new tab)vdb-entryx_refsource_VUPENx_transferred
- 38521 (opens in a new tab)vdb-entryx_refsource_OSVDBx_transferred
- nortel-ipsoftphone-rtcp-bo(37256) (opens in a new tab)vdb-entryx_refsource_XFx_transferred
- 26118 (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-2007-5636)Record last updated .