Unauthorized facility access via replayed disarm signals
Published May 19, 2025 · Updated May 19, 2025
Authentication bypass in Tiiwee X1 Alarm System TWX1HAKV2 allows physically proximate attackers to disarm it by replaying radio signals. The 433 MHz Princeton remote-control protocol uses neither encryption nor rolling codes, so a captured disarm signal remains valid; subtracting two from an arm ID also derives the disarm ID. The attacker must receive a legitimate remote transmission within radio range and retransmit or recalculate it, permitting entry without triggering the alarm.
Summary
What happened
Authentication bypass in Tiiwee X1 Alarm System TWX1HAKV2 allows physically proximate attackers to disarm it by replaying radio signals. The 433 MHz Princeton remote-control protocol uses neither encryption nor rolling codes, so a captured disarm signal remains valid; subtracting two from an arm ID also derives the disarm ID. The attacker must receive a legitimate remote transmission within radio range and retransmit or recalculate it, permitting entry without triggering the alarm.
The record
- CVE
- CVE-2025-30072
- Published
- May 19, 2025
- Updated
- May 19, 2025
- Vendor
- Unknown vendor
- Product
- Unknown product
- Classifications
- CWE-294, T0887
- Attack vector
- adjacent
- Privileges
- unauthenticated
Timeline
How it unfolded
- May 19, 2025CVE publishedPublication date reported by the CVE source.
- May 19, 2025Record updatedLatest update available in the CVE record.
Exploitability
Present is not the same as exploitable
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What is affected?
Affected products and versions are unavailable in this record.
Published CVSS scores
CVSS describes severity. EPSS estimates exploitation probability.
Attacks
What attackers are doing with it
Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.
Public exploit references
- 433 MHz disarm-signal capture-replay proof of conceptproof of concept · demonstrated
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Technologies
Your stack
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Your stack
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