CVE-2007-3361

CVE-2007-3361 is a high-severity vulnerability in Nortel Pc Client Soft Phone Sip with a CVSS 2.0 base score of 7.8. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low.

Key facts

Description

The Nortel PC Client SIP Soft Phone 4.1 3.5.208[20051015] allows remote attackers to cause a denial of service (device crash) via a SIP message with a malformed header.

Frequently asked questions

What is CVE-2007-3361?
The Nortel PC Client SIP Soft Phone 4.1 3.5.208[20051015] allows remote attackers to cause a denial of service (device crash) via a SIP message with a malformed header.
How severe is CVE-2007-3361?
CVE-2007-3361 has a CVSS 2.0 base score of 7.8, rated high severity.
Is CVE-2007-3361 being actively exploited?
It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (77th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2007-3361?
CVE-2007-3361 affects Nortel Pc Client Soft Phone Sip. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2007-3361?
Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
When was CVE-2007-3361 published?
CVE-2007-3361 was published on 2007-06-22 and last updated on 2026-06-16.

References

Affected products (1)