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CVE-2026-42511

Remote code execution via malicious DHCP options PUBLISHED

Description (CNA)

The BOOTP file field is written to the lease file without escaping embedded double-quotes, allowing injection of arbitrary dhclient.conf directives. When the lease file is subsequently re-parsed by dhclient, e.g., after a system restart, an attacker-controlled field from the lease is passed to dhclient-script(8), which evaluates it. A rogue DHCP server may be able to execute arbirary code as root on a system running dhclient.

Affected (CNA)

Vendor / productVersions
FreeBSD / FreeBSDaffected 15.0-RELEASE before p7; affected 14.4-RELEASE before p3; affected 14.3-RELEASE before p12; affected 13.5-RELEASE before p13

CWE

CWE-149

References

ADP enrichment

CISA-ADP

No English description supplied.

No references supplied.