CVE-2016-10306: Trango Altum AC600 devices have a built-in, hidden root account, with a default password of abcd1234

This week

CRITICAL 9.8REMOTEMITIGATE

CVE-2016-10306 is a critical-severity flaw (CVSS 9.8) affecting a600 firmware. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

Trango Altum AC600 devices have a built-in, hidden root account, with a default password of abcd1234. This account is accessible via SSH and/or TELNET, and grants access to the underlying embedded UNIX OS on the device, allowing full control over it.

Why this priority

Critical severity
Remotely exploitable, no login, no user action

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

Risk facts

CVSS score	9.8 (Critical)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	None
User interaction	None
EPSS exploit chance	2.7% (top 14%)
CISA exploited list	No
Weakness	CWE-798
Published	2017-03-30
Last modified	2026-06-17

Publisher (CNA): MITRE · Vendor: trango

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

Am I affected?

Timeline

2017-03-30 07:59 UTCPublished CVE record published
2026-06-17 00:39 UTCUpdated Record last modified

trango a600 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-2016-10306?

a600 firmware: mitigate or apply the listed mitigation. Exact commands for each OS are on this page.

Is CVE-2016-10306 being exploited?

CVE-2016-10306 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-2016-10306 affect?

CVE-2016-10306 affects a600 firmware. Severity is critical (CVSS 9.8). Trango Altum AC600 devices have a built-in, hidden root account, with a default password of abcd1234. This account is accessible via SSH and/or TELNET, and grants access to the underlying embedded UNIX OS on the device, allowing full contro

How urgent is CVE-2016-10306?

Priority 61/100. Critical severity; Remotely exploitable, no login, no user action

References

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