CVE-2017-3186: ACTi cameras including the D, B, I, and E series using firmware version A1D-500-V6.11.31-AC use non-random def

This week

CRITICAL 9.8REMOTEMITIGATE

CVE-2017-3186 is a critical-severity flaw (CVSS 9.8) affecting camera firmware. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

ACTi cameras including the D, B, I, and E series using firmware version A1D-500-V6.11.31-AC use non-random default credentials across all devices. A remote attacker can take complete control of a device using default admin credentials.

Why this priority

Critical severity
EPSS top 7%: very likely to be exploited
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	6.1% (top 7%)
CISA exploited list	No
Weakness	CWE-521, CWE-798
Published	2017-12-16
Last modified	2026-06-17

Publisher (CNA): CERT/CC · Vendor: acti

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

Am I affected?

Timeline

2017-12-16 02:29 UTCPublished CVE record published
2026-06-17 01:17 UTCUpdated Record last modified

acti camera firmware MITIGATE

Affected: a1d-500-v6.11.31-ac

Fixed in: no fixed release known

Safe to downgrade to: a release before a1d-500-v6.11.31-ac

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-2017-3186?

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

Is CVE-2017-3186 being exploited?

CVE-2017-3186 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-2017-3186 affect?

CVE-2017-3186 affects camera firmware. Severity is critical (CVSS 9.8). ACTi cameras including the D, B, I, and E series using firmware version A1D-500-V6.11.31-AC use non-random default credentials across all devices. A remote attacker can take complete control of a device using default admin credentials.

How urgent is CVE-2017-3186?

Priority 63/100. Critical severity; EPSS top 7%: very likely to be exploited; Remotely exploitable, no login, no user action

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References

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