How severe is CVE-2007-3436?

CVE-2007-3436 has a CVSS 2.0 base score of 5.0, rated medium severity.

Is CVE-2007-3436 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 13% (96th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2007-3436?

CVE-2007-3436 affects Microsoft Msn Messenger. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2007-3436?

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

When was CVE-2007-3436 published?

CVE-2007-3436 was published on 2007-06-27 and last updated on 2026-06-16.

CVE-2007-3436

CVE-2007-3436 is a medium-severity vulnerability in Microsoft Msn Messenger with a CVSS 2.0 base score of 5.0. Its EPSS exploit-prediction score of 13% places it in the 96th percentile, indicating an elevated likelihood of exploitation.

Key facts

Severity: Medium (CVSS 2.0 base score 5.0)
EPSS exploit prediction: 13% (96th percentile)
Actively exploited: Not listed in CISA KEV
Affected product: Microsoft Msn Messenger
Published: 2007-06-27
Last modified: 2026-06-16

Description

Microsoft MSN Messenger 4.7 on Windows XP allows remote attackers to cause a denial of service (resource consumption) via a flood of SIP INVITE requests to the port specified for voice conversation.

Frequently asked questions

What is CVE-2007-3436?: Microsoft MSN Messenger 4.7 on Windows XP allows remote attackers to cause a denial of service (resource consumption) via a flood of SIP INVITE requests to the port specified for voice conversation.
How severe is CVE-2007-3436?: CVE-2007-3436 has a CVSS 2.0 base score of 5.0, rated medium severity.
Is CVE-2007-3436 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 13% (96th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2007-3436?: CVE-2007-3436 affects Microsoft Msn Messenger. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2007-3436?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2007-3436 published?: CVE-2007-3436 was published on 2007-06-27 and last updated on 2026-06-16.

References

Affected products (1)

cpe:2.3:a:microsoft:msn_messenger:4.7:*:*:*:*:*:*:*

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