Physical alarm disarming via fixed-code RF replay
Published Feb 11, 2026 · Updated Feb 11, 2026
Authentication replay in the PGST PG107 Alarm System 1.25.05.hf allows physically proximate attackers to disarm it via PF-50 keyfob RF signals. The PF-50 1.2 keyfob transmits a static 433.92 MHz bitstream, and the base station accepts matching UID and command bits without checking freshness or sequence. Capturing one legitimate Disarm transmission within radio range is sufficient to rebroadcast it indefinitely and change the alarm state without triggering an alert.
Summary
What happened
Authentication replay in the PGST PG107 Alarm System 1.25.05.hf allows physically proximate attackers to disarm it via PF-50 keyfob RF signals. The PF-50 1.2 keyfob transmits a static 433.92 MHz bitstream, and the base station accepts matching UID and command bits without checking freshness or sequence. Capturing one legitimate Disarm transmission within radio range is sufficient to rebroadcast it indefinitely and change the alarm state without triggering an alert.
The record
- CVE
- CVE-2025-67135
- Published
- Feb 11, 2026
- Updated
- Feb 11, 2026
- Vendor
- Unknown vendor
- Product
- Unknown product
- Classifications
- CWE-294
- Attack vector
- physical
- Privileges
- unauthenticated
Timeline
How it unfolded
- Feb 11, 2026CVE publishedPublication date reported by the CVE source.
- Feb 11, 2026Record updatedLatest update available in the CVE record.
Exploitability
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What is affected?
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Published CVSS scores
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Attacks
What attackers are doing with it
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Weakness, pattern, technique
Public exploit references
- RF fixed-code replay demonstrationproof of concept · demonstrated
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Technologies
Your stack
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Your stack
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