CVE-2020-12134: Nanometrics Centaur through 4.3.23 and TitanSMA through 4.2.20 mishandle access control for the syslog log.

Q: How do I fix CVE-2020-12134?

centaur: upgrade to newer than 4.3.23; titansma: upgrade to newer than 4.2.20. Exact commands for each OS are on this page.

Q: Is CVE-2020-12134 being exploited?

CVE-2020-12134 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-2020-12134 affect?

CVE-2020-12134 affects centaur, titansma. Severity is critical (CVSS 9.8). Nanometrics Centaur through 4.3.23 and TitanSMA through 4.2.20 mishandle access control for the syslog log.

Q: How urgent is CVE-2020-12134?

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

This week

CRITICAL 9.8REMOTEUPGRADEUPGRADE

CVE-2020-12134 is a critical-severity flaw (CVSS 9.8) affecting centaur, titansma. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

Nanometrics Centaur through 4.3.23 and TitanSMA through 4.2.20 mishandle access control for the syslog log.

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	1.3% (top 29%)
CISA exploited list	No
Weakness	CWE-772
Published	2020-04-24
Last modified	2026-06-17

Publisher (CNA): MITRE · Vendor: nanometrics

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

Am I affected?

Timeline

2020-04-24 01:15 UTCPublished CVE record published
2026-06-17 02:51 UTCUpdated Record last modified

nanometrics centaur UPGRADE

Affected: <= 4.3.23

Fixed in: newer than 4.3.23

Safe to downgrade to: no unaffected older release

1. Check installed version

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

2. UPGRADE to newer than 4.3.23 (Debian / Ubuntu)

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

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade centaur

Note

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

nanometrics titansma UPGRADE

Affected: <= 4.2.20

Fixed in: newer than 4.2.20

Safe to downgrade to: no unaffected older release

1. Check installed version

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

2. UPGRADE to newer than 4.2.20 (Debian / Ubuntu)

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

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade titansma

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-2020-12134?

centaur: upgrade to newer than 4.3.23; titansma: upgrade to newer than 4.2.20. Exact commands for each OS are on this page.

Is CVE-2020-12134 being exploited?

CVE-2020-12134 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-2020-12134 affect?

CVE-2020-12134 affects centaur, titansma. Severity is critical (CVSS 9.8). Nanometrics Centaur through 4.3.23 and TitanSMA through 4.2.20 mishandle access control for the syslog log.

How urgent is CVE-2020-12134?

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

References

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