CVE-2022-36555: Hytec Inter HWL-2511-SS v1.05 and below implements a SHA512crypt hash for the root account which can be easily

Q: How do I fix CVE-2022-36555?

hwl-2511-ss firmware: upgrade to newer than 1.05. Exact commands for each OS are on this page.

Q: Is CVE-2022-36555 being exploited?

CVE-2022-36555 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

Q: What does CVE-2022-36555 affect?

CVE-2022-36555 affects hwl-2511-ss firmware. Severity is critical (CVSS 9.8). 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.

Q: How urgent is CVE-2022-36555?

Priority 53/100. Critical severity; Remotely exploitable, no login, no user action

This month

CRITICAL 9.8REMOTEUPGRADE

CVE-2022-36555 is a critical-severity flaw (CVSS 9.8) affecting hwl-2511-ss firmware. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

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.

Why this priority

Critical severity
Remotely exploitable, no login, no user action

A fixed release or distro patch exists.

Risk facts

CVSS score	9.8 (Critical)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	None
User interaction	None
EPSS exploit chance	0.7% (top 46%)
CISA exploited list	No
Weakness	CWE-326
Published	2022-08-29
Last modified	2026-06-17

Publisher (CNA): MITRE · Vendor: hytec

Last updated 2026-06-17 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2022-08-29 23:15 UTCPublished CVE record published
2026-06-17 04:53 UTCUpdated Record last modified

hytec hwl-2511-ss firmware UPGRADE

Affected: <= 1.05

Fixed in: newer than 1.05

Safe to downgrade to: no unaffected older release

Check your OS release

cat /etc/os-release; uname -r

Debian / Ubuntu

sudo apt update && sudo apt full-upgrade

RHEL / Amazon Linux / Fedora

sudo dnf upgrade --refresh

Windows

Install the latest cumulative update from Windows Update

If no patch exists yet

OS downgrades are not safe. Apply the vendor mitigation from the advisory and restrict exposure.

Verify at the official source NVD · CVE Program · Report a problem with this page
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.

Quick answers

How do I fix CVE-2022-36555?

hwl-2511-ss firmware: upgrade to newer than 1.05. Exact commands for each OS are on this page.

Is CVE-2022-36555 being exploited?

CVE-2022-36555 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

What does CVE-2022-36555 affect?

CVE-2022-36555 affects hwl-2511-ss firmware. Severity is critical (CVSS 9.8). 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.

How urgent is CVE-2022-36555?

Priority 53/100. Critical severity; Remotely exploitable, no login, no user action

Related CVEs

CVE-2022-36554 CRITICAL 9.8 UPGRADE A command injection vulnerability in the CLI (Command Line Interface) implementation of Hytec Inter HWL-2511-S
CVE-2022-36553 CRITICAL 9.8 UPGRADE Hytec Inter HWL-2511-SS v1.05 and below was discovered to contain a command injection vulnerability via the co

References

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