CVE-2019-3702: A Remote Code Execution issue in the DNS Query Web UI in Lifesize Icon LS_RM3_3.7.0 (2421) allows remote authe

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HIGH 8.8MITIGATEMITIGATEMITIGATE

CVE-2019-3702 is a high-severity flaw (CVSS 8.8) affecting icon 300 firmware, icon 500 firmware, icon 700 firmware. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

A Remote Code Execution issue in the DNS Query Web UI in Lifesize Icon LS_RM3_3.7.0 (2421) allows remote authenticated attackers to execute arbitrary commands via a crafted DNS Query address field in a JSON API request.

Why this priority

High severity
EPSS top 8%: very likely to be exploited
Public exploit reference

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

Risk facts

CVSS score	8.8 (High)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	Low
User interaction	None
EPSS exploit chance	5.2% (top 8%)
CISA exploited list	No
Weakness	CWE-78
Published	2019-05-13
Last modified	2026-06-17

Publisher (CNA): MITRE · Vendor: lifesize

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

Am I affected?

Timeline

2019-05-13 17:29 UTCPublished CVE record published
2026-06-17 02:35 UTCUpdated Record last modified

lifesize icon 300 firmware MITIGATE

Affected: ls_rm3_3.7.0\(2421\)

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.

lifesize icon 500 firmware MITIGATE

Affected: ls_rm3_3.7.0\(2421\)

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.

lifesize icon 700 firmware MITIGATE

Affected: ls_rm3_3.7.0\(2421\)

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-2019-3702?

icon 300 firmware: mitigate or apply the listed mitigation; icon 500 firmware: mitigate or apply the listed mitigation; icon 700 firmware: mitigate or apply the listed mitigation. Exact commands for each OS are on this page.

Is CVE-2019-3702 being exploited?

CVE-2019-3702 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-2019-3702 affect?

CVE-2019-3702 affects icon 300 firmware, icon 500 firmware, icon 700 firmware. Severity is high (CVSS 8.8). A Remote Code Execution issue in the DNS Query Web UI in Lifesize Icon LS_RM3_3.7.0 (2421) allows remote authenticated attackers to execute arbitrary commands via a crafted DNS Query address field in a JSON API request.

How urgent is CVE-2019-3702?

Priority 59/100. High severity; EPSS top 8%: very likely to be exploited; Public exploit reference

References

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