CVE-2018-11401: In SimpliSafe Original, RF Interference (e.g., an extremely strong 433.92 MHz signal) by a physically proximat

Routine

MEDIUM 4.6MITIGATE

CVE-2018-11401 is a medium-severity flaw (CVSS 4.6) affecting u9k-bs1000 firmware. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

In SimpliSafe Original, RF Interference (e.g., an extremely strong 433.92 MHz signal) by a physically proximate attacker does not cause a notification.

Why this priority

No elevated risk signals yet

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

Risk facts

CVSS score	4.6 (Medium)
Attack vector	Physical
Attack complexity	Low
Privileges needed	None
User interaction	None
EPSS exploit chance	0.3% (top 76%)
CISA exploited list	No
Published	2018-05-24
Last modified	2026-06-17

Publisher (CNA): MITRE · Vendor: simplisafe

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

Am I affected?

Timeline

2018-05-24 05:29 UTCPublished CVE record published
2026-06-17 01:35 UTCUpdated Record last modified

simplisafe u9k-bs1000 firmware MITIGATE

Affected: all versions

Fixed in: no fixed release known

Safe to downgrade to: no unaffected older release

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-2018-11401?

u9k-bs1000 firmware: mitigate or apply the listed mitigation. Exact commands for each OS are on this page.

Is CVE-2018-11401 being exploited?

CVE-2018-11401 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-2018-11401 affect?

CVE-2018-11401 affects u9k-bs1000 firmware. Severity is medium (CVSS 4.6). In SimpliSafe Original, RF Interference (e.g., an extremely strong 433.92 MHz signal) by a physically proximate attacker does not cause a notification.

How urgent is CVE-2018-11401?

Priority 22/100. No elevated risk signals yet.

Related CVEs

CVE-2018-11400 MEDIUM 4.6 MITIGATE In SimpliSafe Original, the Base Station fails to detect tamper attempts: it does not send a notification if a

References

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