What is CVE-2022-36553?

CVE-2022-36553 is a critical-severity vulnerability in Hytec Hwl-2511-Ss, classified under Command Injection. CVSS score: 9.8/10. Published 2022-08-29.

How severe is CVE-2022-36553?

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

Is CVE-2022-36553 known to be exploited?

2 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.

RCE in Hytec Hwl-2511-Ss

CVE-2022-36553

Hytec Inter HWL-2511-SS v1.05 and below was discovered to contain a command injection vulnerability via the component /www/cgi-bin/popen.cgi.

Vulnerability class: Command Injection (OS Command Injection)

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: 0.909 (99.8th percentile), scored 2026-10-15.

High probability of exploitation in the next 30 days — patch promptly. 100th percentile — 99.8% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.909 · newest: 0.909 · change: 0.000

Affected products

Weakness classification (CWE)

CWE-77 — Command Injection

Public proof-of-concept exploits

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-2022-36553?: CVE-2022-36553 is a critical-severity vulnerability in Hytec Hwl-2511-Ss, classified under Command Injection. CVSS score: 9.8/10. Published 2022-08-29.
How severe is CVE-2022-36553?: Critical severity. CVSS v3 base score is 9.8 out of 10.
Is CVE-2022-36553 known to be exploited?: 2 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.