What is CVE-2022-36555?

CVE-2022-36555 is a critical-severity vulnerability in Hytec Hwl-2511-Ss, classified under Inadequate Encryption Strength. CVSS score: 9.8/10. Published 2022-08-29.

How severe is CVE-2022-36555?

Critical severity. CVSS v3 base score is 9.8 out of 10.

Vulnerability in Hytec Hwl-2511-Ss

CVE-2022-36555

Hytec Inter HWL-2511-SS v1.05 and below implements a SHA512crypt hash for the root account which can be easily cracked via a brute-force attack.

Published 2022-08-29 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 9.8 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.

EPSS exploit prediction

EPSS: 0.007 (51.5th percentile), scored 2026-10-01.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 51st percentile — 51.5% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.007 · newest: 0.007 · change: +0.000

Affected products

Weakness classification (CWE)

CWE-326 — Inadequate Encryption Strength

References

hytec.co.jp/eng/products/our-brand/hwl-2511-ss.html (Product, Vendor Advisory)
hytec.co.jp/eng/wordpress/wp-content/uploads/2019/09/hwl-2511-ss-ds.3.0.pdf (Vendor Advisory)
gist.github.com/Nwqda/b27418ab801eb0b9cdbe8d042cb0249b (Broken Link)

Frequently asked questions

What is CVE-2022-36555?: CVE-2022-36555 is a critical-severity vulnerability in Hytec Hwl-2511-Ss, classified under Inadequate Encryption Strength. CVSS score: 9.8/10. Published 2022-08-29.
How severe is CVE-2022-36555?: Critical severity. CVSS v3 base score is 9.8 out of 10.