CVE-2023-6333 — The affected ControlByWeb Relay products are vulnerable to a stored cross-site s

The affected ControlByWeb Relay products are vulnerable to a stored cross-site scripting vulnerability, which could allow an attacker to inject arbitrary scripts into the endpoint of a web interface that could run malicious javascript code during a user's session.

01What is this vulnerability?

The affected ControlByWeb Relay products are vulnerable to a stored cross-site scripting vulnerability, which could allow an attacker to inject arbitrary scripts into the endpoint of a web interface that could run malicious javascript code during a user's session.

02Affected products

Vendor	Product	Versions
ControlByWeb	X	332-24I — Firmware 1.06
ControlByWeb	X	301-I — Firmware 1.15
ControlByWeb	X	301-24I — Firmware 1.15

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: 2023-12-07T18:08:04.324Z
• Last modified: 2026-02-25T16:50:54.327Z

09References

• www.cisa.gov — https://www.cisa.gov/news-events/ics-advisories/icsa-23-341-05