CVE-2026-27790: Uncaught Exception (CWE-248) in the T20 Readers allows an authenticated and authorized operator to trigger a r

Routine

LOW 2.7UPGRADE

CVE-2026-27790 is a low-severity flaw (CVSS 2.7) affecting command centre. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

Uncaught Exception (CWE-248) in the T20 Readers allows an authenticated and authorized operator to trigger a restart by sending specific requests, resulting in a temporary denial of service. Version of Command Centre affected: * 9.50 prior to vCR9.50.260616a (distributed in 9.50.1587(MR1)) * 9.40 prior to vCR9.40.260616a (distributed in 9.40.3130(MR3)) * 9.30 prior to vCR9.30.260616a (distributed in 9.30.3983(MR5)) * 9.20 prior t

Why this priority

No elevated risk signals yet

A fixed release or distro patch exists.

Risk facts

CVSS score	2.7 (Low)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	High
User interaction	None
EPSS exploit chance	0.4% (top 68%)
CISA exploited list	No
Weakness	CWE-248
Published	2026-07-07
Last modified	2026-10-25

Publisher (CNA): Gallagher Group Ltd. · Vendor: gallagher

Last updated 2026-10-25 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2026-07-07 05:16 UTCPublished CVE record published
2026-10-25 20:10 UTCUpdated Record last modified

gallagher command centre UPGRADE

Affected: < 9.20.4349 · >= 9.30.1594 and < 9.30.3983 · >= 9.40.1359 and < 9.40.3130 · >= 9.50.978 and < 9.50.1587

Fixed in: 9.20.4349, 9.30.3983, 9.40.3130, 9.50.1587

Safe to downgrade to: a release before 9.30.1594

1. Check installed version

apt-cache policy command-centre || rpm -q command-centre || command-centre --version

2. UPGRADE to 9.20.4349 (Debian / Ubuntu)

sudo apt update && sudo apt install --only-upgrade command-centre

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade command-centre

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 9.30.1594 (Debian / Ubuntu)

apt-cache madison command-centre sudo apt install command-centre=<VERSION_BEFORE_9.30.1594> sudo apt-mark hold command-centre

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

dnf --showduplicates list command-centre sudo dnf downgrade command-centre-<VERSION_BEFORE_9.30.1594> sudo dnf versionlock add command-centre

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-2026-27790?

command centre: upgrade to 9.20.4349, 9.30.3983, 9.40.3130, 9.50.1587. Exact commands for each OS are on this page.

Is CVE-2026-27790 being exploited?

CVE-2026-27790 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-2026-27790 affect?

CVE-2026-27790 affects command centre. Severity is low (CVSS 2.7). Uncaught Exception (CWE-248) in the T20 Readers allows an authenticated and authorized operator to trigger a restart by sending specific requests, resulting in a temporary denial of service. Version of Command Centre affected: * 9.5

How urgent is CVE-2026-27790?

Priority 18/100. No elevated risk signals yet.

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References

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