How severe is CVE-2008-5180?

CVE-2008-5180 has a CVSS 3.x base score of 5.3, rated medium severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is none, integrity none, and availability low.

Is CVE-2008-5180 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 68% (99th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2008-5180?

CVE-2008-5180 affects Microsoft Office Communicator. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2008-5180?

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

When was CVE-2008-5180 published?

CVE-2008-5180 was published on 2008-11-20 and last updated on 2026-06-16.

CVE-2008-5180

CVE-2008-5180 is a medium-severity vulnerability in Microsoft Office Communicator with a CVSS 3.x base score of 5.3. Its EPSS exploit-prediction score of 68% places it in the 99th percentile, indicating an elevated likelihood of exploitation. The underlying weakness is classified as CWE-770.

Key facts

Severity: Medium (CVSS 3.x base score 5.3)
CVSS v2: 5.0
EPSS exploit prediction: 68% (99th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-770
Affected product: Microsoft Office Communicator
Published: 2008-11-20
Last modified: 2026-06-16

Description

Microsoft Communicator, and Communicator in Microsoft Office 2010 beta, allows remote attackers to cause a denial of service (memory consumption) via a large number of SIP INVITE requests, which trigger the creation of many sessions.

Frequently asked questions

What is CVE-2008-5180?: Microsoft Communicator, and Communicator in Microsoft Office 2010 beta, allows remote attackers to cause a denial of service (memory consumption) via a large number of SIP INVITE requests, which trigger the creation of many sessions.
How severe is CVE-2008-5180?: CVE-2008-5180 has a CVSS 3.x base score of 5.3, rated medium severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is none, integrity none, and availability low.
Is CVE-2008-5180 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 68% (99th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2008-5180?: CVE-2008-5180 affects Microsoft Office Communicator. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2008-5180?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2008-5180 published?: CVE-2008-5180 was published on 2008-11-20 and last updated on 2026-06-16.

References

Affected products (1)

cpe:2.3:a:microsoft:office_communicator:*:*:*:*:*:*:*:*

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