How severe is CVE-2011-1547?

CVE-2011-1547 has a CVSS 2.0 base score of 6.8, rated medium severity.

Is CVE-2011-1547 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 5% (91st percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2011-1547?

CVE-2011-1547 primarily affects Netbsd. In total, 5 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2011-1547?

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

When was CVE-2011-1547 published?

CVE-2011-1547 was published on 2011-05-09 and last updated on 2026-06-16.

CVE-2011-1547

CVE-2011-1547 is a medium-severity vulnerability in Netbsd with a CVSS 2.0 base score of 6.8. 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: Medium (CVSS 2.0 base score 6.8)
EPSS exploit prediction: 5% (91st percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-119
Affected product: Netbsd
Published: 2011-05-09
Last modified: 2026-06-16

Description

Multiple stack consumption vulnerabilities in the kernel in NetBSD 4.0, 5.0 before 5.0.3, and 5.1 before 5.1.1, when IPsec is enabled, allow remote attackers to cause a denial of service (memory corruption and panic) or possibly have unspecified other impact via a crafted (1) IPv4 or (2) IPv6 packet with nested IPComp headers.

Frequently asked questions

What is CVE-2011-1547?: Multiple stack consumption vulnerabilities in the kernel in NetBSD 4.0, 5.0 before 5.0.3, and 5.1 before 5.1.1, when IPsec is enabled, allow remote attackers to cause a denial of service (memory corruption and panic) or possibly have unspecified other impact via a crafted (1) IPv4 or (2) IPv6 packet with nested IPComp headers.
How severe is CVE-2011-1547?: CVE-2011-1547 has a CVSS 2.0 base score of 6.8, rated medium severity.
Is CVE-2011-1547 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 5% (91st percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2011-1547?: CVE-2011-1547 primarily affects Netbsd. In total, 5 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2011-1547?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2011-1547 published?: CVE-2011-1547 was published on 2011-05-09 and last updated on 2026-06-16.

References

Affected products (5)

cpe:2.3:o:netbsd:netbsd:4.0:*:*:*:*:*:*:*
cpe:2.3:o:netbsd:netbsd:5.0:*:*:*:*:*:*:*
cpe:2.3:o:netbsd:netbsd:5.0.1:*:*:*:*:*:*:*
cpe:2.3:o:netbsd:netbsd:5.0.2:*:*:*:*:*:*:*
cpe:2.3:o:netbsd:netbsd:5.1:*:*:*:*:*:*:*

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