CVE-2021-29393: Remote Code Execution in cominput.jsp and comoutput.jsp in Northstar Technologies Inc NorthStar Club Managemen

This week

CRITICAL 9.8REMOTEDOWNGRADE

CVE-2021-29393 is a critical-severity flaw (CVSS 9.8) affecting northstar club management. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

Remote Code Execution in cominput.jsp and comoutput.jsp in Northstar Technologies Inc NorthStar Club Management 6.3 allows remote unauthenticated users to inject and execute arbitrary system commands via the unsanitized user-controlled "command" and "commandvalues" parameters.

Why this priority

Critical severity
Remotely exploitable, no login, no user action

No fix is published yet: follow the downgrade or mitigation steps.

Risk facts

CVSS score	9.8 (Critical)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	None
User interaction	None
EPSS exploit chance	3.6% (top 11%)
CISA exploited list	No
Weakness	CWE-78
Published	2022-02-04
Last modified	2026-06-17

Publisher (CNA): MITRE · Vendor: globalnorthstar

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

Am I affected?

Timeline

2022-02-04 19:15 UTCPublished CVE record published
2026-06-17 03:47 UTCUpdated Record last modified

globalnorthstar northstar club management DOWNGRADE

Affected: 6.3

Fixed in: no fixed release known

Safe to downgrade to: a release before 6.3

1. Check installed version

apt-cache policy northstar-club-management || rpm -q northstar-club-management || northstar-club-management --version

2. No fixed release: DOWNGRADE to a release before 6.3 (Debian / Ubuntu)

apt-cache madison northstar-club-management sudo apt install northstar-club-management=<VERSION_BEFORE_6.3> sudo apt-mark hold northstar-club-management

2. No fixed release: DOWNGRADE (RHEL / Amazon Linux / Fedora)

dnf --showduplicates list northstar-club-management sudo dnf downgrade northstar-club-management-<VERSION_BEFORE_6.3> sudo dnf versionlock add northstar-club-management

Downgrade risk

Downgrading can break dependent software and may reopen older bugs. Read the distro advisory first and test on a non-production host.

After downgrade

Restart the service, and keep the package held until a fixed release ships.

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-2021-29393?

northstar club management: downgrade or apply the listed mitigation. Exact commands for each OS are on this page.

Is CVE-2021-29393 being exploited?

CVE-2021-29393 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-2021-29393 affect?

CVE-2021-29393 affects northstar club management. Severity is critical (CVSS 9.8). Remote Code Execution in cominput.jsp and comoutput.jsp in Northstar Technologies Inc NorthStar Club Management 6.3 allows remote unauthenticated users to inject and execute arbitrary system commands via the unsanitized user-controlled "com

How urgent is CVE-2021-29393?

Priority 62/100. Critical severity; Remotely exploitable, no login, no user action

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CVE-2022-26959 CRITICAL 10.0 DOWNGRADE There are two full (read/write) Blind/Time-based SQL injection vulnerabilities in the Northstar Club Managemen
CVE-2021-29398 MEDIUM 5.3 DOWNGRADE Directory traversal in /northstar/Common/NorthFileManager/fileManagerObjects.jsp Northstar Technologies Inc No
CVE-2021-29397 HIGH 7.5 DOWNGRADE Cleartext Transmission of Sensitive Information in /northstar/Admin/login.jsp in Northstar Technologies Inc No
CVE-2021-29396 CRITICAL 9.8 DOWNGRADE Systemic Insecure Permissions in Northstar Technologies Inc NorthStar Club Management 6.3 allows remote unauth
CVE-2021-29395 HIGH 7.5 DOWNGRADE Directory travesal in /northstar/filemanager/download.jsp in Northstar Technologies Inc NorthStar Club Managem

References

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