CVE-2017-17738: The BrightSign Digital Signage (4k242) device (Firmware 6.2.63 and below) allows renaming and modifying files

Q: How do I fix CVE-2017-17738?

4k242 firmware: upgrade to newer than 6.2.63. Exact commands for each OS are on this page.

Q: Is CVE-2017-17738 being exploited?

CVE-2017-17738 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-2017-17738 affect?

CVE-2017-17738 affects 4k242 firmware. Severity is high (CVSS 7.5). The BrightSign Digital Signage (4k242) device (Firmware 6.2.63 and below) allows renaming and modifying files via /tools.html.

Q: How urgent is CVE-2017-17738?

Priority 60/100. High severity; EPSS top 7%: very likely to be exploited; Public exploit reference; Remotely exploitable, no login, no user action

This week

HIGH 7.5REMOTEUPGRADE

CVE-2017-17738 is a high-severity flaw (CVSS 7.5) affecting 4k242 firmware. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

The BrightSign Digital Signage (4k242) device (Firmware 6.2.63 and below) allows renaming and modifying files via /tools.html.

Why this priority

High severity
EPSS top 7%: very likely to be exploited
Public exploit reference
Remotely exploitable, no login, no user action

A fixed release or distro patch exists.

Risk facts

CVSS score	7.5 (High)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	None
User interaction	None
EPSS exploit chance	5.8% (top 7%)
CISA exploited list	No
Published	2017-12-18
Last modified	2026-06-17

Publisher (CNA): MITRE · Vendor: brightsign

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

Am I affected?

Timeline

2017-12-18 06:29 UTCPublished CVE record published
2026-06-17 01:11 UTCUpdated Record last modified

brightsign 4k242 firmware UPGRADE

Affected: <= 6.2.63

Fixed in: newer than 6.2.63

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.

Public exploits and detection

Public code exists for this CVE. Treat unpatched systems as at risk, and only run PoCs in a lab.

Exploit-DB: BrightSign Digital Signage - Multiple Vulnerablities

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-2017-17738?

4k242 firmware: upgrade to newer than 6.2.63. Exact commands for each OS are on this page.

Is CVE-2017-17738 being exploited?

CVE-2017-17738 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-2017-17738 affect?

CVE-2017-17738 affects 4k242 firmware. Severity is high (CVSS 7.5). The BrightSign Digital Signage (4k242) device (Firmware 6.2.63 and below) allows renaming and modifying files via /tools.html.

How urgent is CVE-2017-17738?

Priority 60/100. High severity; EPSS top 7%: very likely to be exploited; Public exploit reference; Remotely exploitable, no login, no user action

Related CVEs

CVE-2017-17739 CRITICAL 9.8 UPGRADE The BrightSign Digital Signage (4k242) device (Firmware 6.2.63 and below) has directory traversal via the /sto
CVE-2017-17737 MEDIUM 6.1 UPGRADE The BrightSign Digital Signage (4k242) device (Firmware 6.2.63 and below) has XSS via the REF parameter to /ne

References

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