How severe is CVE-2007-1365?

CVE-2007-1365 has a CVSS 2.0 base score of 10.0, rated critical severity.

Is CVE-2007-1365 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 18% (97th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2007-1365?

CVE-2007-1365 primarily affects Openbsd. In total, 2 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2007-1365?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.

When was CVE-2007-1365 published?

CVE-2007-1365 was published on 2007-03-10 and last updated on 2026-06-16.

CVE-2007-1365

CVE-2007-1365 is a critical-severity vulnerability in Openbsd with a CVSS 2.0 base score of 10.0. Its EPSS exploit-prediction score of 18% places it in the 97th percentile, indicating an elevated likelihood of exploitation.

Key facts

Severity: Critical (CVSS 2.0 base score 10.0)
EPSS exploit prediction: 18% (97th percentile)
Actively exploited: Not listed in CISA KEV
Affected product: Openbsd
Published: 2007-03-10
Last modified: 2026-06-16

Description

Buffer overflow in kern/uipc_mbuf2.c in OpenBSD 3.9 and 4.0 allows remote attackers to execute arbitrary code via fragmented IPv6 packets due to "incorrect mbuf handling for ICMP6 packets." NOTE: this was originally reported as a denial of service.

Frequently asked questions

What is CVE-2007-1365?: Buffer overflow in kern/uipc_mbuf2.c in OpenBSD 3.9 and 4.0 allows remote attackers to execute arbitrary code via fragmented IPv6 packets due to "incorrect mbuf handling for ICMP6 packets." NOTE: this was originally reported as a denial of service.
How severe is CVE-2007-1365?: CVE-2007-1365 has a CVSS 2.0 base score of 10.0, rated critical severity.
Is CVE-2007-1365 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 18% (97th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2007-1365?: CVE-2007-1365 primarily affects Openbsd. In total, 2 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2007-1365?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.
When was CVE-2007-1365 published?: CVE-2007-1365 was published on 2007-03-10 and last updated on 2026-06-16.

References

Affected products (2)

cpe:2.3:o:openbsd:openbsd:3.9:*:*:*:*:*:*:*
cpe:2.3:o:openbsd:openbsd:4.0:*:*:*:*:*:*:*

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