CVE-2022-36553: Hytec Inter HWL-2511-SS v1.05 and below was discovered to contain a command injection vulnerability via the co

Q: How do I fix CVE-2022-36553?

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

Q: Is CVE-2022-36553 being exploited?

CVE-2022-36553 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-2022-36553 affect?

CVE-2022-36553 affects hwl-2511-ss firmware. Severity is critical (CVSS 9.8). 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.

Q: How urgent is CVE-2022-36553?

Priority 64/100. Critical severity; EPSS top 1%: very likely to be exploited; Remotely exploitable, no login, no user action

This week

CRITICAL 9.8REMOTEUPGRADE

CVE-2022-36553 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 was discovered to contain a command injection vulnerability via the component /www/cgi-bin/popen.cgi.

Why this priority

Critical severity
EPSS top 1%: very likely to be exploited
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	97.0% (top 1%)
CISA exploited list	No
Weakness	CWE-77
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.

Public exploits and detection

Public code exists for this CVE. Treat unpatched systems as at risk, and only run PoCs in a lab.

Nuclei scan template: Hytec Inter HWL-2511-SS - Remote Command Execution

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-2022-36553?

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

Is CVE-2022-36553 being exploited?

CVE-2022-36553 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-2022-36553 affect?

CVE-2022-36553 affects hwl-2511-ss firmware. Severity is critical (CVSS 9.8). 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.

How urgent is CVE-2022-36553?

Priority 64/100. Critical severity; EPSS top 1%: very likely to be exploited; Remotely exploitable, no login, no user action

Related CVEs

CVE-2022-36555 CRITICAL 9.8 UPGRADE Hytec Inter HWL-2511-SS v1.05 and below implements a SHA512crypt hash for the root account which can be easily
CVE-2022-36554 CRITICAL 9.8 UPGRADE A command injection vulnerability in the CLI (Command Line Interface) implementation of Hytec Inter HWL-2511-S

References

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