How severe is CVE-2008-3157?

CVE-2008-3157 has a CVSS 2.0 base score of 5.0, rated medium severity.

Is CVE-2008-3157 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (70th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2008-3157?

CVE-2008-3157 primarily affects Nortel Sip Multimedia Pc Client. In total, 2 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2008-3157?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.

When was CVE-2008-3157 published?

CVE-2008-3157 was published on 2008-07-11 and last updated on 2026-06-16.

CVE-2008-3157

CVE-2008-3157 is a medium-severity vulnerability in Nortel Sip Multimedia Pc Client with a CVSS 2.0 base score of 5.0. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-399.

Key facts

Severity: Medium (CVSS 2.0 base score 5.0)
EPSS exploit prediction: 1% (70th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-399
Affected product: Nortel Sip Multimedia Pc Client
Published: 2008-07-11
Last modified: 2026-06-16

Description

Nortel SIP Multimedia PC Client 4.x MCS5100 and MCS5200 does not limit the number of concurrent sessions, which allows attackers to cause a denial of service (resource consumption) via a large number of sessions.

Frequently asked questions

What is CVE-2008-3157?: Nortel SIP Multimedia PC Client 4.x MCS5100 and MCS5200 does not limit the number of concurrent sessions, which allows attackers to cause a denial of service (resource consumption) via a large number of sessions.
How severe is CVE-2008-3157?: CVE-2008-3157 has a CVSS 2.0 base score of 5.0, rated medium severity.
Is CVE-2008-3157 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (70th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2008-3157?: CVE-2008-3157 primarily affects Nortel Sip Multimedia Pc Client. In total, 2 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2008-3157?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2008-3157 published?: CVE-2008-3157 was published on 2008-07-11 and last updated on 2026-06-16.

References

Affected products (2)

cpe:2.3:a:nortel:sip_multimedia_pc_client:4.0:*:mcs5100:*:*:*:*:*
cpe:2.3:a:nortel:sip_multimedia_pc_client:4.0:*:mcs5200:*:*:*:*:*

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