CVE-2017-17738 — The BrightSign Digital Signage (4k242) device (Firmware 6

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

01What is this vulnerability?

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

02Affected products

No structured affected-product list available — see references below for vendor advisories.

03Active exploitation status

Not currently listed on the CISA Known Exploited Vulnerabilities (KEV) catalog. EPSS is the best forward-looking signal — see the EPSS row above.

04Recommended remediation

• Patch to a fixed version listed in the vendor advisory (see references below).
• Mitigate with WAF rules, network egress filters, or feature flags where the patch is not yet available.
• Hunt historical logs for exploitation indicators — see Detection signatures below.

05Technical details

For the full vendor write-up, exploit chains, and reference implementations, see the references list in section 09.

06Detection signatures

Ask SARA in chat to draft a starting detection for this CVE in your stack of choice.

07Related CVEs

No directly-cited follow-up CVEs in the KB record for this advisory. The references list in section 09 carries the vendor cross-references.

08Timeline

• Published: 2017-12-18T06:29:00.317
• Last modified: 2026-05-13T00:24:29.033

09References

• www.information-paradox.net — http://www.information-paradox.net/2017/12/brightsign-multiple-vulnerablities-cv…
• www.exploit-db.com — https://www.exploit-db.com/exploits/43364/
• www.information-paradox.net — http://www.information-paradox.net/2017/12/brightsign-multiple-vulnerablities-cv…
• www.exploit-db.com — https://www.exploit-db.com/exploits/43364/