What is the CVSS score of CVE-2021-40170?

CVE-2021-40170 has a CVSS 3.1 base score of 6.8 (Medium). CVSS vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:N/I:H/A:H. EPSS exploitation probability: 0.9%.

Is there a public PoC exploit available for CVE-2021-40170?

Yes, a public proof-of-concept exploit is available for CVE-2021-40170. Prioritise patching immediately. EPSS: 0.9%.

Securitashome Alarm System Firmware CVE-2021-40170

MEDIUM

Authentication Bypass by Capture-replay (CWE-294)

2021-12-15 cve@mitre.org

Information Disclosure Securitashome Alarm System Firmware

6.8

CVSS 3.1 · NVD

Severity by source

NVD PRIMARY

6.8 MEDIUM

AV:N/AC:H/PR:N/UI:R/S:U/C:N/I:H/A:H

Primary rating from NVD · only source for this CVE.

CVSS VectorNVD

CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:N/I:H/A:H

Attack Vector

Network

Attack Complexity

High

Privileges Required

None

User Interaction

Required

Scope

Unchanged

Confidentiality

None

Integrity

High

Availability

High

Lifecycle Timeline

CVE Published

Dec 15, 2021 - 07:15 nvd

MEDIUM 6.8

DescriptionNVD

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.

AnalysisAI

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. Rated medium severity (CVSS 6.8), this vulnerability is remotely exploitable, no authentication required. Public exploit code available and no vendor patch available.

Technical ContextAI

This vulnerability is classified under CWE-294. 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. Affected products include: Securitashome Securitashome Alarm System Firmware.

RemediationAI

No vendor patch is available at time of analysis. Monitor vendor advisories for updates. Apply vendor patches when available. Implement network segmentation and monitoring as interim mitigations.