CVE-2018-17921: SAGA1-L8B with any firmware versions prior to A0.10 are vulnerable to an attack that may allow an attacker to

Q: How do I fix CVE-2018-17921?

saga1-l8b firmware: upgrade to a0.10. Exact commands for each OS are on this page.

Q: Is CVE-2018-17921 being exploited?

CVE-2018-17921 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

Q: What does CVE-2018-17921 affect?

CVE-2018-17921 affects saga1-l8b firmware. Severity is high (CVSS 8.8). SAGA1-L8B with any firmware versions prior to A0.10 are vulnerable to an attack that may allow an attacker to force-pair the device without human interaction.

This month

HIGH 8.8UPGRADE

CVE-2018-17921 is a high-severity flaw (CVSS 8.8) affecting saga1-l8b firmware. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

SAGA1-L8B with any firmware versions prior to A0.10 are vulnerable to an attack that may allow an attacker to force-pair the device without human interaction.

Why this priority

High severity

A fixed release or distro patch exists.

Risk facts

CVSS score	8.8 (High)
Attack vector	Adjacent network
Attack complexity	Low
Privileges needed	None
User interaction	None
EPSS exploit chance	0.7% (top 46%)
CISA exploited list	No
Weakness	CWE-284
Published	2018-10-24
Last modified	2026-06-17

Publisher (CNA): ICS-CERT · Vendor: sagaradio

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

Am I affected?

Timeline

2018-10-24 22:29 UTCPublished CVE record published
2026-06-17 01:46 UTCUpdated Record last modified

sagaradio saga1-l8b firmware UPGRADE

Affected: < a0.10

Fixed in: a0.10

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-2018-17921?

saga1-l8b firmware: upgrade to a0.10. Exact commands for each OS are on this page.

Is CVE-2018-17921 being exploited?

CVE-2018-17921 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-2018-17921 affect?

CVE-2018-17921 affects saga1-l8b firmware. Severity is high (CVSS 8.8). SAGA1-L8B with any firmware versions prior to A0.10 are vulnerable to an attack that may allow an attacker to force-pair the device without human interaction.

How urgent is CVE-2018-17921?

Priority 44/100. High severity

Related CVEs

CVE-2018-17923 MEDIUM 6.9 UPGRADE SAGA1-L8B with any firmware versions prior to A0.10 are vulnerable to an attack that an attacker with physical
CVE-2018-17903 CRITICAL 9.1 UPGRADE SAGA1-L8B with any firmware versions prior to A0.10 are vulnerable to a replay attack and command forgery.

References

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