CVE-2021-40171: The absence of notifications regarding an ongoing RF jamming attack in the SecuritasHome home alarm system, ve

Routine

MEDIUM 5.3REMOTEMITIGATE

CVE-2021-40171 is a medium-severity flaw (CVSS 5.3) affecting securitashome alarm system firmware. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

The absence of notifications regarding an ongoing RF jamming attack 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 block legitimate traffic while not alerting the owner of the system.

Why this priority

Remotely exploitable, no login, no user action

No fix is published yet: follow the downgrade or mitigation steps.

Risk facts

CVSS score	5.3 (Medium)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	None
User interaction	None
EPSS exploit chance	1.0% (top 39%)
CISA exploited list	No
Published	2021-12-15
Last modified	2026-06-17

Publisher (CNA): MITRE · Vendor: securitashome

Last updated 2026-06-17 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2021-12-15 07:15 UTCPublished CVE record published
2026-06-17 04:06 UTCUpdated Record last modified

securitashome securitashome alarm system firmware MITIGATE

Affected: hpgw-g_0.0.2.23f_bg_u-itr-f1-bd_bl.a30.20181117

Fixed in: no fixed release known

Safe to downgrade to: a release before hpgw-g_0.0.2.23f_bg_u-itr-f1-bd_bl.a30.20181117

Check your OS release

cat /etc/os-release; uname -r

Debian / Ubuntu

sudo apt update && sudo apt full-upgrade

RHEL / Amazon Linux / Fedora

sudo dnf upgrade --refresh

Windows

Install the latest cumulative update from Windows Update

If no patch exists yet

OS downgrades are not safe. Apply the vendor mitigation from the advisory and restrict exposure.

Verify at the official source NVD · CVE Program · Report a problem with this page
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.

Quick answers

How do I fix CVE-2021-40171?

securitashome alarm system firmware: mitigate or apply the listed mitigation. Exact commands for each OS are on this page.

Is CVE-2021-40171 being exploited?

CVE-2021-40171 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

What does CVE-2021-40171 affect?

CVE-2021-40171 affects securitashome alarm system firmware. Severity is medium (CVSS 5.3). The absence of notifications regarding an ongoing RF jamming attack 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 block legitimate traffic while not alerting the owner

How urgent is CVE-2021-40171?

Priority 39/100. Remotely exploitable, no login, no user action

Related CVEs

CVE-2021-40170 MEDIUM 6.8 MITIGATE An RF replay attack vulnerability in the SecuritasHome home alarm system, version HPGW-G 0.0.2.23F BG_U-ITR-F1

References

← Back to latest CVEs