How severe is CVE-2005-3753?

CVE-2005-3753 has a CVSS 2.0 base score of 7.8, rated high severity.

Is CVE-2005-3753 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-2005-3753?

CVE-2005-3753 primarily affects Linux Linux Kernel. In total, 5 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2005-3753?

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-2005-3753 published?

CVE-2005-3753 was published on 2005-11-22 and last updated on 2026-06-16.

CVE-2005-3753

CVE-2005-3753 is a high-severity vulnerability in Linux Linux Kernel with a CVSS 2.0 base score of 7.8. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low.

Key facts

Severity: High (CVSS 2.0 base score 7.8)
EPSS exploit prediction: 1% (70th percentile)
Actively exploited: Not listed in CISA KEV
Affected product: Linux Linux Kernel
Published: 2005-11-22
Last modified: 2026-06-16

Description

Linux kernel before after 2.6.12 and before 2.6.13.1 might allow attackers to cause a denial of service (Oops) via certain IPSec packets that cause alignment problems in standard multi-block cipher processors. NOTE: it is not clear whether this issue can be triggered by an attacker.

Frequently asked questions

What is CVE-2005-3753?: Linux kernel before after 2.6.12 and before 2.6.13.1 might allow attackers to cause a denial of service (Oops) via certain IPSec packets that cause alignment problems in standard multi-block cipher processors. NOTE: it is not clear whether this issue can be triggered by an attacker.
How severe is CVE-2005-3753?: CVE-2005-3753 has a CVSS 2.0 base score of 7.8, rated high severity.
Is CVE-2005-3753 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-2005-3753?: CVE-2005-3753 primarily affects Linux Linux Kernel. In total, 5 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2005-3753?: 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-2005-3753 published?: CVE-2005-3753 was published on 2005-11-22 and last updated on 2026-06-16.

References

http://bugzilla.kernel.org/show_bug.cgi?id=5194

Affected products (5)

cpe:2.3:o:linux:linux_kernel:2.6.12.1:*:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:2.6.12.2:*:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:2.6.12.3:*:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:2.6.12.4:*:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:2.6.13:*:*:*:*:*:*:*

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