CVE-2021-27440: The software contains a hard-coded password it uses for its own inbound authentication or for outbound communi

Q: How do I fix CVE-2021-27440?

reason dr60 firmware: upgrade to 02a04.1. Exact commands for each OS are on this page.

Q: Is CVE-2021-27440 being exploited?

CVE-2021-27440 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-2021-27440 affect?

CVE-2021-27440 affects reason dr60 firmware. Severity is critical (CVSS 9.8). The software contains a hard-coded password it uses for its own inbound authentication or for outbound communication to external components on the Reason DR60 (all firmware versions prior to 02A04.1).

Q: How urgent is CVE-2021-27440?

Priority 57/100. Critical severity; Remotely exploitable, no login, no user action

This month

CRITICAL 9.8REMOTEUPGRADE

CVE-2021-27440 is a critical-severity flaw (CVSS 9.8) affecting reason dr60 firmware. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

The software contains a hard-coded password it uses for its own inbound authentication or for outbound communication to external components on the Reason DR60 (all firmware versions prior to 02A04.1).

Why this priority

Critical severity
Remotely exploitable, no login, no user action

A fixed release or distro patch exists.

Risk facts

CVSS score	9.8 (Critical)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	None
User interaction	None
EPSS exploit chance	1.4% (top 28%)
CISA exploited list	No
Weakness	CWE-259, CWE-798
Published	2021-03-25
Last modified	2026-06-17

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

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

Am I affected?

Timeline

2021-03-25 20:15 UTCPublished CVE record published
2026-06-17 03:44 UTCUpdated Record last modified

ge reason dr60 firmware UPGRADE

Affected: < 02a04.1

Fixed in: 02a04.1

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-2021-27440?

reason dr60 firmware: upgrade to 02a04.1. Exact commands for each OS are on this page.

Is CVE-2021-27440 being exploited?

CVE-2021-27440 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-2021-27440 affect?

CVE-2021-27440 affects reason dr60 firmware. Severity is critical (CVSS 9.8). The software contains a hard-coded password it uses for its own inbound authentication or for outbound communication to external components on the Reason DR60 (all firmware versions prior to 02A04.1).

How urgent is CVE-2021-27440?

Priority 57/100. Critical severity; Remotely exploitable, no login, no user action

Related CVEs

CVE-2021-27454 HIGH 7.8 UPGRADE The software performs an operation at a privilege level higher than the minimum level required, which creates
CVE-2021-27438 HIGH 8.8 UPGRADE The software contains a hard-coded password it uses for its own inbound authentication or for outbound communi

References

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