How severe is CVE-2023-3107?

CVE-2023-3107 has a CVSS 3.x base score of 7.5, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is none, integrity none, and availability high.

Is CVE-2023-3107 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (41st percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2023-3107?

CVE-2023-3107 primarily affects Freebsd. In total, 21 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2023-3107?

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-2023-3107 published?

CVE-2023-3107 was published on 2023-08-01 and last updated on 2026-06-17.

CVE-2023-3107

CVE-2023-3107 is a high-severity vulnerability in Freebsd with a CVSS 3.x base score of 7.5. 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-190.

Key facts

Severity: High (CVSS 3.x base score 7.5)
EPSS exploit prediction: 1% (41st percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-190
Affected product: Freebsd
Published: 2023-08-01
Last modified: 2026-06-17

Description

A set of carefully crafted ipv6 packets can trigger an integer overflow in the calculation of a fragment reassembled packet's payload length field. This allows an attacker to trigger a kernel panic, resulting in a denial of service.

Frequently asked questions

What is CVE-2023-3107?: A set of carefully crafted ipv6 packets can trigger an integer overflow in the calculation of a fragment reassembled packet's payload length field. This allows an attacker to trigger a kernel panic, resulting in a denial of service.
How severe is CVE-2023-3107?: CVE-2023-3107 has a CVSS 3.x base score of 7.5, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is none, integrity none, and availability high.
Is CVE-2023-3107 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (41st percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2023-3107?: CVE-2023-3107 primarily affects Freebsd. In total, 21 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2023-3107?: 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-2023-3107 published?: CVE-2023-3107 was published on 2023-08-01 and last updated on 2026-06-17.

References

Affected products (21)

cpe:2.3:o:freebsd:freebsd:12.4:-:*:*:*:*:*:*
cpe:2.3:o:freebsd:freebsd:12.4:p1:*:*:*:*:*:*
cpe:2.3:o:freebsd:freebsd:12.4:p2:*:*:*:*:*:*
cpe:2.3:o:freebsd:freebsd:12.4:p3:*:*:*:*:*:*
cpe:2.3:o:freebsd:freebsd:12.4:rc2-p1:*:*:*:*:*:*
cpe:2.3:o:freebsd:freebsd:12.4:rc2-p2:*:*:*:*:*:*
cpe:2.3:o:freebsd:freebsd:13.1:-:*:*:*:*:*:*
cpe:2.3:o:freebsd:freebsd:13.1:b1-p1:*:*:*:*:*:*
cpe:2.3:o:freebsd:freebsd:13.1:b2-p2:*:*:*:*:*:*
cpe:2.3:o:freebsd:freebsd:13.1:p1:*:*:*:*:*:*
cpe:2.3:o:freebsd:freebsd:13.1:p2:*:*:*:*:*:*
cpe:2.3:o:freebsd:freebsd:13.1:p3:*:*:*:*:*:*
cpe:2.3:o:freebsd:freebsd:13.1:p4:*:*:*:*:*:*
cpe:2.3:o:freebsd:freebsd:13.1:p5:*:*:*:*:*:*
cpe:2.3:o:freebsd:freebsd:13.1:p6:*:*:*:*:*:*
cpe:2.3:o:freebsd:freebsd:13.1:p7:*:*:*:*:*:*
cpe:2.3:o:freebsd:freebsd:13.1:p8:*:*:*:*:*:*
cpe:2.3:o:freebsd:freebsd:13.1:rc1-p1:*:*:*:*:*:*
cpe:2.3:o:freebsd:freebsd:13.2:-:*:*:*:*:*:*
cpe:2.3:o:freebsd:freebsd:13.2:p1:*:*:*:*:*:*
cpe:2.3:a:netapp:clustered_data_ontap:9.0:-:*:*:*:*:*:*

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