CVE-2019-12771: Command injection is possible in ThinStation through 6.1.1 via shell metacharacters after the cgi-bin/CdContro

Q: How do I fix CVE-2019-12771?

thinstation: upgrade to newer than 6.1.1. Exact commands for each OS are on this page.

Q: Is CVE-2019-12771 being exploited?

CVE-2019-12771 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-2019-12771 affect?

CVE-2019-12771 affects thinstation. Severity is critical (CVSS 9.8). Command injection is possible in ThinStation through 6.1.1 via shell metacharacters after the cgi-bin/CdControl.cgi action= substring, or after the cgi-bin/VolControl.cgi OK= substring.

Q: How urgent is CVE-2019-12771?

Priority 66/100. Critical severity; Public exploit reference; Remotely exploitable, no login, no user action

This week

CRITICAL 9.8REMOTEUPGRADE

CVE-2019-12771 is a critical-severity flaw (CVSS 9.8) affecting thinstation. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

Command injection is possible in ThinStation through 6.1.1 via shell metacharacters after the cgi-bin/CdControl.cgi action= substring, or after the cgi-bin/VolControl.cgi OK= substring.

Why this priority

Critical severity
Public exploit reference
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	2.8% (top 14%)
CISA exploited list	No
Weakness	CWE-78
Published	2019-06-07
Last modified	2026-06-17

Publisher (CNA): MITRE · Vendor: thinstation project

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

Am I affected?

Timeline

2019-06-07 14:29 UTCPublished CVE record published
2026-06-17 02:15 UTCUpdated Record last modified

thinstation project thinstation UPGRADE

Affected: <= 6.1.1

Fixed in: newer than 6.1.1

Safe to downgrade to: no unaffected older release

1. Check installed version

apt-cache policy thinstation || rpm -q thinstation || thinstation --version

2. UPGRADE to newer than 6.1.1 (Debian / Ubuntu)

sudo apt update && sudo apt install --only-upgrade thinstation

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade thinstation

Note

Distros often backport fixes without changing the version number. Confirm with the distro advisory or changelog.

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-2019-12771?

thinstation: upgrade to newer than 6.1.1. Exact commands for each OS are on this page.

Is CVE-2019-12771 being exploited?

CVE-2019-12771 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-2019-12771 affect?

CVE-2019-12771 affects thinstation. Severity is critical (CVSS 9.8). Command injection is possible in ThinStation through 6.1.1 via shell metacharacters after the cgi-bin/CdControl.cgi action= substring, or after the cgi-bin/VolControl.cgi OK= substring.

How urgent is CVE-2019-12771?

Priority 66/100. Critical severity; Public exploit reference; Remotely exploitable, no login, no user action

References

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