CVE-2023-28611: Incorrect authorization in OMICRON StationGuard 1.10 through 2.20 and StationScout 1.30 through 2.20 allows an

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CRITICAL 9.8REMOTEUPGRADEUPGRADE

CVE-2023-28611 is a critical-severity flaw (CVSS 9.8) affecting stationguard, stationscout. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

Incorrect authorization in OMICRON StationGuard 1.10 through 2.20 and StationScout 1.30 through 2.20 allows an attacker to bypass intended access restrictions.

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	0.6% (top 49%)
CISA exploited list	No
Weakness	CWE-863
Published	2023-03-23
Last modified	2026-06-17

Publisher (CNA): MITRE · Vendor: omicronenergy

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

Am I affected?

Timeline

2023-03-23 21:15 UTCPublished CVE record published
2026-06-17 05:48 UTCUpdated Record last modified

omicronenergy stationguard UPGRADE

Affected: >= 1.10 and <= 2.20

Fixed in: newer than 2.20

Safe to downgrade to: a release before 1.10

1. Check installed version

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

2. UPGRADE to newer than 2.20 (Debian / Ubuntu)

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

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade stationguard

Note

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

3. If no update is available yet, DOWNGRADE to a release before 1.10 (Debian / Ubuntu)

apt-cache madison stationguard sudo apt install stationguard=<VERSION_BEFORE_1.10> sudo apt-mark hold stationguard

3. If no update is available yet, DOWNGRADE (RHEL / Amazon Linux / Fedora)

dnf --showduplicates list stationguard sudo dnf downgrade stationguard-<VERSION_BEFORE_1.10> sudo dnf versionlock add stationguard

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.

omicronenergy stationscout UPGRADE

Affected: >= 1.30 and <= 2.20

Fixed in: newer than 2.20

Safe to downgrade to: a release before 1.30

1. Check installed version

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

2. UPGRADE to newer than 2.20 (Debian / Ubuntu)

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

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade stationscout

Note

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

3. If no update is available yet, DOWNGRADE to a release before 1.30 (Debian / Ubuntu)

apt-cache madison stationscout sudo apt install stationscout=<VERSION_BEFORE_1.30> sudo apt-mark hold stationscout

3. If no update is available yet, DOWNGRADE (RHEL / Amazon Linux / Fedora)

dnf --showduplicates list stationscout sudo dnf downgrade stationscout-<VERSION_BEFORE_1.30> sudo dnf versionlock add stationscout

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-2023-28611?

stationguard: upgrade to newer than 2.20; stationscout: upgrade to newer than 2.20. Exact commands for each OS are on this page.

Is CVE-2023-28611 being exploited?

CVE-2023-28611 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-2023-28611 affect?

CVE-2023-28611 affects stationguard, stationscout. Severity is critical (CVSS 9.8). Incorrect authorization in OMICRON StationGuard 1.10 through 2.20 and StationScout 1.30 through 2.20 allows an attacker to bypass intended access restrictions.

How urgent is CVE-2023-28611?

Priority 52/100. Critical severity; Remotely exploitable, no login, no user action

Related CVEs

CVE-2023-28610 CRITICAL 9.8 UPGRADE UPGRADE The update process in OMICRON StationGuard and OMICRON StationScout before 2.21 can be exploited by providing

References

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