CVE-2007-5636 EXPLOIT
7.5
HIGH · CVSS 2.0 · EPSS 6.7% (pctl 94)
Patch early
A public exploit exists.
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."
Scoring
| CVSS | 7.5 (HIGH, v2.0) |
|---|---|
| Vector | AV:N/AC:L/Au:N/C:P/I:P/A:P |
| EPSS | 6.69% — more likely to be exploited than 94% of all CVEs |
| Weakness | CWE-119 |
| On CISA KEV | no |
| Public exploit | yes |
| Published | 2007-10-23 |
| Last modified | 2026-06-16 |
Affected (1)
| Vendor | Product |
|---|---|
| nortel | ip softphone 2050 |
Public exploits
| Source | Title | Date |
|---|---|---|
| exploit-db | Nortel Networks UNIStim IP SoftPhone 2050 - RTCP Port Buffer Overflow | 2007-10-18 |
References
- http://osvdb.org/38521
- http://secunia.com/advisories/27252
- http://securityreason.com/securityalert/3271
- http://support.nortel.com/go/main.jsp?cscat=BLTNDETAIL&id=655203
- http://www.csnc.ch/static/advisory/csnc/nortel_UNIStim_IP_softphone_buffer-overflow_v1.0.txt
- http://www.securityfocus.com/archive/1/482476/100/0/threaded
- http://www.securityfocus.com/bid/26118
- http://www.vupen.com/english/advisories/2007/3540
- https://exchange.xforce.ibmcloud.com/vulnerabilities/37256
- http://osvdb.org/38521
- http://secunia.com/advisories/27252
- http://securityreason.com/securityalert/3271
- http://support.nortel.com/go/main.jsp?cscat=BLTNDETAIL&id=655203
- http://www.csnc.ch/static/advisory/csnc/nortel_UNIStim_IP_softphone_buffer-overflow_v1.0.txt
- http://www.securityfocus.com/archive/1/482476/100/0/threaded
- http://www.securityfocus.com/bid/26118
- http://www.vupen.com/english/advisories/2007/3540
- https://exchange.xforce.ibmcloud.com/vulnerabilities/37256
→ the Explorer · watch your stack · NVD