CVE-2021-36165: RICON Industrial Cellular Router S9922L 16.10.3(3794) is affected by cleartext storage of sensitive informatio

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MEDIUM 5.3REMOTEMITIGATE

CVE-2021-36165 is a medium-severity flaw (CVSS 5.3) affecting s9922l firmware. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

RICON Industrial Cellular Router S9922L 16.10.3(3794) is affected by cleartext storage of sensitive information and sends username and password as base64.

Why this priority

Public exploit reference
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	0.6% (top 52%)
CISA exploited list	No
Weakness	CWE-312, CWE-319
Published	2021-09-28
Last modified	2026-06-17

Publisher (CNA): MITRE · Vendor: riconmobile

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

Am I affected?

Timeline

2021-09-28 10:15 UTCPublished CVE record published
2026-06-17 03:58 UTCUpdated Record last modified

riconmobile s9922l firmware MITIGATE

Affected: 16.10.3\(3794\)

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-2021-36165?

s9922l firmware: mitigate or apply the listed mitigation. Exact commands for each OS are on this page.

Is CVE-2021-36165 being exploited?

CVE-2021-36165 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-2021-36165 affect?

CVE-2021-36165 affects s9922l firmware. Severity is medium (CVSS 5.3). RICON Industrial Cellular Router S9922L 16.10.3(3794) is affected by cleartext storage of sensitive information and sends username and password as base64.

How urgent is CVE-2021-36165?

Priority 40/100. Public exploit reference; Remotely exploitable, no login, no user action

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References

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