CVE-2007-5636
Buffer overflow in the Nortel UNIStim IP Softphone 2050 allows remote attackers to cause a denial...
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."
Exploit likelihood
What each source reports
NVD Score used
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."
- Record
CVE-2007-5636- CVSS 2.0
- 7.5 High
AV:N/AC:L/Au:N/C:P/I:P/A:P - Weakness
- CWE-119
- Updated
- 2026-11-02
CVE List No score
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."
- Record
CVE-2007-5636- Updated
- 2026-11-02
EUVDEUVD-2007-5608 No score
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."
- Record
EUVD-2007-5608- Updated
- 2026-11-03
GitHub AdvisoriesGHSA-5v5q-p7mc-784j No score
Buffer overflow in the Nortel UNIStim IP Softphone 2050 allows remote attackers to cause a denial...
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."
- Record
GHSA-5v5q-p7mc-784j- Weakness
- CWE-119
- Updated
- 2026-11-02
Affected products
Public exploits
Links only. Every CVE stores no exploit code.
| Source | Link | Date |
|---|---|---|
| Exploit-DB | Nortel Networks UNIStim IP SoftPhone 2050 - RTCP Port Buffer Overflow | 2007-10-18 |
History
| Recorded | Changed | Sources |
|---|---|---|
| aliases | EUVD | |
| aliases, exploits, facts, references, title | Exploit-DB, GitHub Advisories | |
| first indexed | CVE List, NVD |
Dates are when Every CVE recorded each change. Upstream dates may differ.
In short
CVE-2007-5636 is a high vulnerability (CVSS 7.5) in Nortel Ip Softphone 2050, published October 23, 2007. Public exploit code exists. EPSS puts the chance of exploitation in the next 30 days at 6.69%, the 93rd percentile. No source names a fixed version.