How severe is CVE-2007-1209?

CVE-2007-1209 has a CVSS 2.0 base score of 7.2, rated high severity.

Is CVE-2007-1209 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 3% (84th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2007-1209?

CVE-2007-1209 affects Microsoft Windows Vista. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2007-1209?

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-2007-1209 published?

CVE-2007-1209 was published on 2007-04-10 and last updated on 2026-06-16.

CVE-2007-1209

CVE-2007-1209 is a high-severity vulnerability in Microsoft Windows Vista with a CVSS 2.0 base score of 7.2. 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: High (CVSS 2.0 base score 7.2)
EPSS exploit prediction: 3% (84th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-399
Affected product: Microsoft Windows Vista
Published: 2007-04-10
Last modified: 2026-06-16

Description

Use-after-free vulnerability in the Client/Server Run-time Subsystem (CSRSS) in Microsoft Windows Vista does not properly handle connection resources when starting and stopping processes, which allows local users to gain privileges by opening and closing multiple ApiPort connections, which leaves a "dangling pointer" to a process data structure.

Frequently asked questions

What is CVE-2007-1209?: Use-after-free vulnerability in the Client/Server Run-time Subsystem (CSRSS) in Microsoft Windows Vista does not properly handle connection resources when starting and stopping processes, which allows local users to gain privileges by opening and closing multiple ApiPort connections, which leaves a "dangling pointer" to a process data structure.
How severe is CVE-2007-1209?: CVE-2007-1209 has a CVSS 2.0 base score of 7.2, rated high severity.
Is CVE-2007-1209 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 3% (84th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2007-1209?: CVE-2007-1209 affects Microsoft Windows Vista. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2007-1209?: 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-2007-1209 published?: CVE-2007-1209 was published on 2007-04-10 and last updated on 2026-06-16.

References

Affected products (1)

cpe:2.3:o:microsoft:windows_vista:*:*:*:*:*:*:*:*

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