CVE-2023-38034 — A command injection vulnerability in the DHCP Client function of all UniFi Acces

A command injection vulnerability in the DHCP Client function of all UniFi Access Points and Switches, excluding the Switch Flex Mini, could allow a Remote Code Execution (RCE).

01What is this vulnerability?

A command injection vulnerability in the DHCP Client function of all UniFi Access Points and Switches, excluding the Switch Flex Mini, could allow a Remote Code Execution (RCE).

02Affected products

Vendor	Product	Versions
—	All UniFi Access Points (Version 6.5.53 and earlier)	—
—	All UniFi Switches (Version 6.5.32 and earlier)	—
—	USW Flex Mini excluded.	—

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: 2023-08-10T18:58:07.647Z
• Last modified: 2024-12-04T16:30:27.937Z

09References

• community.ui.com — https://community.ui.com/releases/Security-Advisory-Bulletin-035-035/91107858-98…