CVE-2023-27362: 3CX Uncontrolled Search Path Local Privilege Escalation Vulnerability

Routine

HIGH 7.8UPGRADE

CVE-2023-27362 is a high-severity flaw (CVSS 7.8) affecting 3cx. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

3CX Uncontrolled Search Path Local Privilege Escalation Vulnerability. This vulnerability allows local attackers to escalate privileges on affected installations of 3CX. An attacker must first obtain the ability to execute low-privileged code on the target system in order to exploit this vulnerability. The specific flaw exists within the configuration of OpenSSL. The product loads an OpenSSL configuration file from an unsecured location. An atta

Why this priority

High severity

A fixed release or distro patch exists.

Risk facts

CVSS score	7.8 (High)
Attack vector	Local
Attack complexity	Low
Privileges needed	Low
User interaction	None
EPSS exploit chance	0.4% (top 66%)
CISA exploited list	No
Weakness	CWE-427
Published	2024-05-03
Last modified	2026-06-17

Publisher (CNA): Zero Day Initiative · Vendor: 3cx

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

Am I affected?

Timeline

2024-05-03 02:15 UTCPublished CVE record published
2026-06-17 05:44 UTCUpdated Record last modified

3cx 3cx UPGRADE

Affected: >= 18.0.0.451 and < 18.0.8.917

Fixed in: 18.0.8.917

Safe to downgrade to: a release before 18.0.0.451

1. Check installed version

apt-cache policy 3cx || rpm -q 3cx || 3cx --version

2. UPGRADE to 18.0.8.917 (Debian / Ubuntu)

sudo apt update && sudo apt install --only-upgrade 3cx

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade 3cx

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 18.0.0.451 (Debian / Ubuntu)

apt-cache madison 3cx sudo apt install 3cx=<VERSION_BEFORE_18.0.0.451> sudo apt-mark hold 3cx

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

dnf --showduplicates list 3cx sudo dnf downgrade 3cx-<VERSION_BEFORE_18.0.0.451> sudo dnf versionlock add 3cx

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-2023-27362?

3cx: upgrade to 18.0.8.917. Exact commands for each OS are on this page.

Is CVE-2023-27362 being exploited?

CVE-2023-27362 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-2023-27362 affect?

CVE-2023-27362 affects 3cx. Severity is high (CVSS 7.8). 3CX Uncontrolled Search Path Local Privilege Escalation Vulnerability. This vulnerability allows local attackers to escalate privileges on affected installations of 3CX. An attacker must first obtain the ability to execute low-privileged co

How urgent is CVE-2023-27362?

Priority 36/100. High severity

Software pages

OpenSSL vulnerabilities

Related CVEs

CVE-2023-49954 CRITICAL 9.8 UPGRADE The CRM Integration in 3CX before 18.0.9.23 and 20 before 20.0.0.1494 allows SQL Injection via a first name, s

References

← Back to latest CVEs