CVE-2025-56425: An issue was discovered in the AppConnector component version 10.10.0.183 and earlier of enaio 10.10, in the A

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CRITICAL 9.1REMOTEUPGRADE

CVE-2025-56425 is a critical-severity flaw (CVSS 9.1) affecting enaio. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

An issue was discovered in the AppConnector component version 10.10.0.183 and earlier of enaio 10.10, in the AppConnector component version 11.0.0.183 and earlier of enaio 11.0, and in the AppConnctor component version 11.10.0.183 and earlier of enaio 11.10. The vulnerability allows authenticated remote attackers to inject arbitrary SMTP commands via crafted input to the /osrest/api/organization/sendmail endpoint

Why this priority

Critical severity
Public exploit reference
Remotely exploitable, no login, no user action

A fixed release or distro patch exists.

Risk facts

CVSS score	9.1 (Critical)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	None
User interaction	None
EPSS exploit chance	0.7% (top 46%)
CISA exploited list	No
Weakness	CWE-77
Published	2026-01-08
Last modified	2026-06-17

Publisher (CNA): MITRE · Vendor: optimal-systems

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

Am I affected?

Timeline

2026-01-08 17:15 UTCPublished CVE record published
2026-06-17 09:42 UTCUpdated Record last modified

optimal-systems enaio UPGRADE

Affected: >= 10.10.0.0 and < 10.10.0.183 · >= 11.0.0.0 and < 11.0.0.183 · >= 11.10.0.0 and < 11.10.0.183

Fixed in: 10.10.0.183, 11.0.0.183, 11.10.0.183

Safe to downgrade to: a release before 10.10.0.0

1. Check installed version

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

2. UPGRADE to 10.10.0.183 (Debian / Ubuntu)

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

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade enaio

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 10.10.0.0 (Debian / Ubuntu)

apt-cache madison enaio sudo apt install enaio=<VERSION_BEFORE_10.10.0.0> sudo apt-mark hold enaio

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

dnf --showduplicates list enaio sudo dnf downgrade enaio-<VERSION_BEFORE_10.10.0.0> sudo dnf versionlock add enaio

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.

Exact fixes by distribution

Fedora 46 · php-pecl-yac · FIXED · 3.0.2-1.fc46 · FEDORA-2026-0322a78385 · source

sudo dnf upgrade --advisory=FEDORA-2026-0322a78385

Fedora ELN · openldap · FIXED · 2.6.16-1.eln159 · FEDORA-2026-4b30c86326 · source

sudo dnf upgrade --advisory=FEDORA-2026-4b30c86326

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-2025-56425?

enaio: upgrade to 10.10.0.183, 11.0.0.183, 11.10.0.183. Exact commands for each OS are on this page.

Is CVE-2025-56425 being exploited?

CVE-2025-56425 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-2025-56425 affect?

CVE-2025-56425 affects enaio. Severity is critical (CVSS 9.1). An issue was discovered in the AppConnector component version 10.10.0.183 and earlier of enaio 10.10, in the AppConnector component version 11.0.0.183 and earlier of enaio 11.0, and in the AppConnctor component version 11.10.0.183 and earli

How urgent is CVE-2025-56425?

Priority 55/100. Critical severity; Public exploit reference; Remotely exploitable, no login, no user action

References

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