Vulnerability Details CVE-2023-6534
In versions of FreeBSD 14.0-RELEASE before 14-RELEASE-p2, FreeBSD 13.2-RELEASE before 13.2-RELEASE-p7 and FreeBSD 12.4-RELEASE before 12.4-RELEASE-p9, the pf(4) packet filter incorrectly validates TCP sequence numbers. This could allow a malicious actor to execute a denial-of-service attack against hosts behind the firewall.
Exploit prediction scoring system (EPSS) score
EPSS Score 0.002
EPSS Ranking 41.6%
CVSS Severity
CVSS v3 Score 7.5
Products affected by CVE-2023-6534
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cpe:2.3:o:freebsd:freebsd:12.4
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cpe:2.3:o:freebsd:freebsd:13.2
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cpe:2.3:o:freebsd:freebsd:14.0