CVE-2025-45387: osTicket prior to v1.17.6 and v1.18.2 are vulnerable to Broken Access Control Vulnerability in /scp/ajax.php.

Routine

MEDIUM 5.4UPGRADE

CVE-2025-45387 is a medium-severity flaw (CVSS 5.4) affecting osticket. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

osTicket prior to v1.17.6 and v1.18.2 are vulnerable to Broken Access Control Vulnerability in /scp/ajax.php.

Why this priority

No elevated risk signals yet

A fixed release or distro patch exists.

Risk facts

CVSS score	5.4 (Medium)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	Low
User interaction	Required
EPSS exploit chance	0.3% (top 82%)
CISA exploited list	No
Weakness	CWE-79
Published	2025-06-02
Last modified	2026-06-17

Publisher (CNA): MITRE · Vendor: osticket

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

Am I affected?

Timeline

2025-06-02 18:15 UTCPublished CVE record published
2026-06-17 09:25 UTCUpdated Record last modified

osticket osticket UPGRADE

Affected: < 1.17.6 · >= 1.18 and < 1.18.2

Fixed in: 1.17.6, 1.18.2

Safe to downgrade to: a release before 1.18

1. Check installed version

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

2. UPGRADE to 1.17.6 (Debian / Ubuntu)

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

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade osticket

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 1.18 (Debian / Ubuntu)

apt-cache madison osticket sudo apt install osticket=<VERSION_BEFORE_1.18> sudo apt-mark hold osticket

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

dnf --showduplicates list osticket sudo dnf downgrade osticket-<VERSION_BEFORE_1.18> sudo dnf versionlock add osticket

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-2025-45387?

osticket: upgrade to 1.17.6, 1.18.2. Exact commands for each OS are on this page.

Is CVE-2025-45387 being exploited?

CVE-2025-45387 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-2025-45387 affect?

CVE-2025-45387 affects osticket. Severity is medium (CVSS 5.4). osTicket prior to v1.17.6 and v1.18.2 are vulnerable to Broken Access Control Vulnerability in /scp/ajax.php.

How urgent is CVE-2025-45387?

Priority 23/100. No elevated risk signals yet.

Software pages

PHP vulnerabilities

Related CVEs

CVE-2026-26895 MEDIUM 5.3 UPGRADE User enumeration vulnerability in /pwreset.php in osTicket v1.18.2 allows remote attackers to enumerate valid
CVE-2026-22200 HIGH 7.5 UPGRADE Enhancesoft osTicket versions 1.18.x prior to 1.18.3 and 1.17.x prior to 1.17.7 contain an arbitrary file read

References

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