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3 million doors open to uninvited guests in keycard exploit

ID: c826547c-8f7e-5e22-b063-ca7f6f7134c4

STIX ID: report--c826547c-8f7e-5e22-b063-ca7f6f7134c4

Feed Name: The Register (Security)

Threat Score
70/100

Date Published: 2024-03-22

Date Updated: 2026-04-26

Author: Connor Jones

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Researchers disclosed "Unsaflok," vulnerabilities in dormakaba Saflok keycard systems used widely in hotels and multi-occupancy properties that allow attackers, with a valid or expired guest card and inexpensive NFC hardware, to forge cards and bypass locks; a fix exists but only ~36% of affected locks have been upgraded, and full technical details have been withheld to limit immediate exploitation.

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