What is CVE-2023-23040?

CVE-2023-23040 is a high-severity vulnerability in TP-Link Tl-Wr940n, classified under Use of a Broken or Risky Cryptographic Algorithm. CVSS score: 7.5/10. Published 2023-02-22.

How severe is CVE-2023-23040?

High severity. CVSS v3 base score is 7.5 out of 10.

Vulnerability in TP-Link Tl-Wr940n

CVE-2023-23040

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.

Vulnerability class: POODLE (CVE-2014-3566)

Published 2023-02-22 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 7.5 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N.

EPSS exploit prediction

EPSS: 0.004 (28.5th percentile), scored 2026-10-19.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 28th percentile — 28.5% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.004 · newest: 0.004 · change: 0.000

Affected products

TP-Link Tl-Wr940n
TP-Link Tl-Wr940n Firmware — versions 6_3.19.1

Weakness classification (CWE)

CWE-327 — Use of a Broken or Risky Cryptographic Algorithm

References

midist0xf.medium.com/tl-wr940n-uses-weak-md5-hashing-algorithm-ae7b589860d2 (Patch, Third Party Advisory)
www.tp-link.com/en/support/download/tl-wr940n/ (Product)

Frequently asked questions

What is CVE-2023-23040?: CVE-2023-23040 is a high-severity vulnerability in TP-Link Tl-Wr940n, classified under Use of a Broken or Risky Cryptographic Algorithm. CVSS score: 7.5/10. Published 2023-02-22.
How severe is CVE-2023-23040?: High severity. CVSS v3 base score is 7.5 out of 10.