CVE-2023-51837: Ylianst MeshCentral 1.1.16 is vulnerable to Missing SSL Certificate Validation.

This month

CRITICAL 9.8REMOTEDOWNGRADE

CVE-2023-51837 is a critical-severity flaw (CVSS 9.8) affecting meshcentral. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

Ylianst MeshCentral 1.1.16 is vulnerable to Missing SSL Certificate Validation.

Why this priority

Critical severity
Remotely exploitable, no login, no user action

No fix is published yet: follow the downgrade or mitigation steps.

Risk facts

CVSS score	9.8 (Critical)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	None
User interaction	None
EPSS exploit chance	0.5% (top 60%)
CISA exploited list	No
Weakness	CWE-295
Published	2024-01-30
Last modified	2026-06-17

Publisher (CNA): MITRE · Vendor: meshcentral

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

Am I affected?

Timeline

2024-01-30 01:15 UTCPublished CVE record published
2026-06-17 06:41 UTCUpdated Record last modified

meshcentral meshcentral DOWNGRADE

Affected: 1.1.16

Fixed in: no fixed release known

Safe to downgrade to: a release before 1.1.16

1. Check installed version

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

2. No fixed release: DOWNGRADE to a release before 1.1.16 (Debian / Ubuntu)

apt-cache madison meshcentral sudo apt install meshcentral=<VERSION_BEFORE_1.1.16> sudo apt-mark hold meshcentral

2. No fixed release: DOWNGRADE (RHEL / Amazon Linux / Fedora)

dnf --showduplicates list meshcentral sudo dnf downgrade meshcentral-<VERSION_BEFORE_1.1.16> sudo dnf versionlock add meshcentral

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-2023-51837?

meshcentral: downgrade or apply the listed mitigation. Exact commands for each OS are on this page.

Is CVE-2023-51837 being exploited?

CVE-2023-51837 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-2023-51837 affect?

CVE-2023-51837 affects meshcentral. Severity is critical (CVSS 9.8). Ylianst MeshCentral 1.1.16 is vulnerable to Missing SSL Certificate Validation.

How urgent is CVE-2023-51837?

Priority 49/100. Critical severity; Remotely exploitable, no login, no user action

Related CVEs

CVE-2024-26135 HIGH 8.3 UPGRADE MeshCentral is a full computer management web site
CVE-2023-51842 HIGH 7.5 DOWNGRADE An algorithm-downgrade issue was discovered in Ylianst MeshCentral 1.1.16.
CVE-2023-51838 HIGH 7.5 DOWNGRADE Ylianst MeshCentral 1.1.16 suffers from Use of a Broken or Risky Cryptographic Algorithm.

References

← Back to latest CVEs