CVE-2016-5811: An issue was discovered in Visonic PowerLink2, all versions prior to October 2016 firmware release

Routine

MEDIUM 6.1MITIGATE

CVE-2016-5811 is a medium-severity flaw (CVSS 6.1) affecting powerlink2 firmware. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

An issue was discovered in Visonic PowerLink2, all versions prior to October 2016 firmware release. User controlled input is not neutralized prior to being placed in web page output (CROSS-SITE SCRIPTING).

Why this priority

No elevated risk signals yet

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

Risk facts

CVSS score	6.1 (Medium)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	None
User interaction	Required
EPSS exploit chance	1.1% (top 36%)
CISA exploited list	No
Weakness	CWE-79
Published	2017-02-13
Last modified	2026-06-17

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

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

Am I affected?

Timeline

2017-02-13 21:59 UTCPublished CVE record published
2026-06-17 00:50 UTCUpdated Record last modified

visonic powerlink2 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-2016-5811?

powerlink2 firmware: mitigate or apply the listed mitigation. Exact commands for each OS are on this page.

Is CVE-2016-5811 being exploited?

CVE-2016-5811 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-2016-5811 affect?

CVE-2016-5811 affects powerlink2 firmware. Severity is medium (CVSS 6.1). An issue was discovered in Visonic PowerLink2, all versions prior to October 2016 firmware release. User controlled input is not neutralized prior to being placed in web page output (CROSS-SITE SCRIPTING).

How urgent is CVE-2016-5811?

Priority 37/100. No elevated risk signals yet.

Related CVEs

CVE-2016-5813 MEDIUM 5.3 MITIGATE An issue was discovered in Visonic PowerLink2, all versions prior to October 2016 firmware release

References

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