CVE-2021-40170 json
An RF replay attack vulnerability in the SecuritasHome home alarm system, version HPGW-G 0.0.2.23F BG_U-ITR-F1-BD_BL.A30.20181117, allows a…
published 2021-12-15 4 y ago modified 2026-06-17 4 mo ago also EUVD-2021-27355
- cvss
- 6.8
- version 3.1, NVD
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 0.9%
- EPSS 0.9% chance of exploitation in 30 days, percentile 60%
- public exploits
- 0
- none known
Summary
An RF replay attack vulnerability in the SecuritasHome home alarm system, version HPGW-G 0.0.2.23F BG_U-ITR-F1-BD_BL.A30.20181117, allows an attacker to trigger arbitrary system functionality by replaying previously recorded signals. This lets an adversary, among other things, disarm an armed system.
Exploit prediction
0.91% chance of exploitation in the next 30 days, higher than 60% of all scored CVEs (FIRST EPSS, 2026-11-08).
Exploits and checks
- diva-portal.org https://www.diva-portal.org/smash/get/diva2:1600180/FULLTEXT04.pdf referenced PoC, tagged "exploit" by a source, unverified
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| NVD | 3.1 | 6.8 | CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:N/I:H/A:H |
| NVD | 2.0 | 5.8 | AV:N/AC:M/Au:N/C:N/I:P/A:P |
Classification
- Weakness
-
- CWE-294 Authentication Bypass by Capture-replay
References
-
diva-portal.org
/smash/get/diva2:1600180/FULLTEXT04.pdf
exploit, technical-description, third-party-advisory
-
securitashome.se
/product.html/securitashome
vendor-advisory
Sources
- CVE List CVE-2021-40170
- NVD CVE-2021-40170
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