CVE-2023-39935 — Archer C5400 firmware versions prior to 'Archer C5400(JP)_V2_230506' allows a ne

Archer C5400 firmware versions prior to 'Archer C5400(JP)_V2_230506' allows a network-adjacent authenticated attacker to execute arbitrary OS commands.

01What is this vulnerability?

Archer C5400 firmware versions prior to 'Archer C5400(JP)_V2_230506' allows a network-adjacent authenticated attacker to execute arbitrary OS commands.

02Affected products

Vendor	Product	Versions
TP-LINK	Archer C5400	firmware versions prior to 'Archer C5400(JP)_V2_230506'

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

Open the Sigma generator with a pre-filled prompt for this CVE to draft a starting detection in your stack of choice:

Open in Sigma generator →

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: 2023-09-06T09:22:23.919Z
• Last modified: 2024-09-26T20:14:15.235Z

09References

• www.tp-link.com — https://www.tp-link.com/jp/support/download/archer-c5400/#Firmware
• jvn.jp — https://jvn.jp/en/vu/JVNVU99392903/