How severe is CVE-2009-1041?

CVE-2009-1041 has a CVSS 2.0 base score of 7.2, rated high severity.

Is CVE-2009-1041 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (51st percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2009-1041?

CVE-2009-1041 primarily affects Freebsd. In total, 13 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2009-1041?

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-2009-1041 published?

CVE-2009-1041 was published on 2009-03-26 and last updated on 2026-06-16.

CVE-2009-1041

CVE-2009-1041 is a high-severity vulnerability in Freebsd 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-119.

Key facts

Severity: High (CVSS 2.0 base score 7.2)
EPSS exploit prediction: 1% (51st percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-119
Affected product: Freebsd
Published: 2009-03-26
Last modified: 2026-06-16

Description

The ktimer feature (sys/kern/kern_time.c) in FreeBSD 7.0, 7.1, and 7.2 allows local users to overwrite arbitrary kernel memory via an out-of-bounds timer value.

Frequently asked questions

What is CVE-2009-1041?: The ktimer feature (sys/kern/kern_time.c) in FreeBSD 7.0, 7.1, and 7.2 allows local users to overwrite arbitrary kernel memory via an out-of-bounds timer value.
How severe is CVE-2009-1041?: CVE-2009-1041 has a CVSS 2.0 base score of 7.2, rated high severity.
Is CVE-2009-1041 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (51st percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2009-1041?: CVE-2009-1041 primarily affects Freebsd. In total, 13 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2009-1041?: 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-2009-1041 published?: CVE-2009-1041 was published on 2009-03-26 and last updated on 2026-06-16.

References

Affected products (13)

cpe:2.3:o:freebsd:freebsd:7.0:*:*:*:*:*:*:*
cpe:2.3:o:freebsd:freebsd:7.0:pre-release:*:*:*:*:*:*
cpe:2.3:o:freebsd:freebsd:7.0:release:*:*:*:*:*:*
cpe:2.3:o:freebsd:freebsd:7.0:release-p8:*:*:*:*:*:*
cpe:2.3:o:freebsd:freebsd:7.0:release-p9:*:*:*:*:*:*
cpe:2.3:o:freebsd:freebsd:7.0:releng:*:*:*:*:*:*
cpe:2.3:o:freebsd:freebsd:7.0:stable:*:*:*:*:*:*
cpe:2.3:o:freebsd:freebsd:7.1:*:*:*:*:*:*:*
cpe:2.3:o:freebsd:freebsd:7.1:pre-release:*:*:*:*:*:*
cpe:2.3:o:freebsd:freebsd:7.1:release-p1:*:*:*:*:*:*
cpe:2.3:o:freebsd:freebsd:7.1:release-p2:*:*:*:*:*:*
cpe:2.3:o:freebsd:freebsd:7.1:stable:*:*:*:*:*:*
cpe:2.3:o:freebsd:freebsd:7.2:*:*:*:*:*:*:*

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