CVE-2023-23040 — TP-Link router TL-WR940N V6 3

TP-Link router TL-WR940N V6 3.19.1 Build 180119 uses a deprecated MD5 algorithm to hash the admin password used for basic authentication.

01What is this vulnerability?

TP-Link router TL-WR940N V6 3.19.1 Build 180119 uses a deprecated MD5 algorithm to hash the admin password used for basic authentication.

02Affected products

Vendor	Product	Versions
n	a / n/a	n/a

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: 2023-02-22T00:00:00.000Z
• Last modified: 2025-03-12T20:48:12.462Z

09References

• midist0xf.medium.com — https://midist0xf.medium.com/tl-wr940n-uses-weak-md5-hashing-algorithm-ae7b58986…
• www.tp-link.com — https://www.tp-link.com/en/support/download/tl-wr940n/#Firmware