CVE-2026-2749: Vulnerability in Centreon Centreon Open Tickets on Central Server on Linux (Centroen Open Ticket modules).This

This month

CRITICAL 9.9WATCHLISTUPGRADE

CVE-2026-2749 is a critical-severity flaw (CVSS 9.9) affecting open tickets. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

Vulnerability in Centreon Centreon Open Tickets on Central Server on Linux (Centroen Open Ticket modules).This issue affects Centreon Open Tickets on Central Server: from all before 25.10.3, 24.10.8, 24.04.7.

Why this priority

Critical severity
On your watchlist

A fixed release or distro patch exists.

Risk facts

CVSS score	9.9 (Critical)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	Low
User interaction	None
EPSS exploit chance	0.6% (top 50%)
CISA exploited list	No
Weakness	CWE-22
Published	2026-02-27
Last modified	2026-06-17

Publisher (CNA): Centreon · Vendor: centreon

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

Am I affected?

Timeline

2026-02-27 16:16 UTCPublished CVE record published
2026-06-17 10:31 UTCUpdated Record last modified

centreon open tickets UPGRADE

Affected: < 24.04.7 · >= 24.10.0 and < 24.10.8 · >= 25.10.0 and < 25.10.3

Fixed in: 24.04.7, 24.10.8, 25.10.3

Safe to downgrade to: a release before 24.10.0

1. Check installed version

apt-cache policy open-tickets || rpm -q open-tickets || open-tickets --version

2. UPGRADE to 24.04.7 (Debian / Ubuntu)

sudo apt update && sudo apt install --only-upgrade open-tickets

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade open-tickets

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 24.10.0 (Debian / Ubuntu)

apt-cache madison open-tickets sudo apt install open-tickets=<VERSION_BEFORE_24.10.0> sudo apt-mark hold open-tickets

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

dnf --showduplicates list open-tickets sudo dnf downgrade open-tickets-<VERSION_BEFORE_24.10.0> sudo dnf versionlock add open-tickets

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-2026-2749?

open tickets: upgrade to 24.04.7, 24.10.8, 25.10.3. Exact commands for each OS are on this page.

Is CVE-2026-2749 being exploited?

CVE-2026-2749 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-2026-2749 affect?

CVE-2026-2749 affects open tickets. Severity is critical (CVSS 9.9). Vulnerability in Centreon Centreon Open Tickets on Central Server on Linux (Centroen Open Ticket modules).This issue affects Centreon Open Tickets on Central Server: from all before 25.10.3, 24.10.8, 24.04.7.

How urgent is CVE-2026-2749?

Priority 52/100. Critical severity; On your watchlist

Related CVEs

CVE-2025-12514 HIGH 7.2 UPGRADE Improper Neutralization of Special Elements used in an SQL Command ('SQL Injection') vulnerability in Centreon
CVE-2025-8460 MEDIUM 6.8 UPGRADE Improper Neutralization of Input During Web Page Generation (XSS or 'Cross-site Scripting') vulnerability in C

References

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