CVE-2017-14090: A vulnerability in Trend Micro ScanMail for Exchange 12.0 exists in which some communications to the update se

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CRITICAL 9.1REMOTEDOWNGRADE

CVE-2017-14090 is a critical-severity flaw (CVSS 9.1) affecting scanmail. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

A vulnerability in Trend Micro ScanMail for Exchange 12.0 exists in which some communications to the update servers are not encrypted.

Why this priority

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

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

Risk facts

CVSS score	9.1 (Critical)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	None
User interaction	None
EPSS exploit chance	1.3% (top 29%)
CISA exploited list	No
Weakness	CWE-326
Published	2017-12-16
Last modified	2026-06-17

Publisher (CNA): Trend Micro, Inc. · Vendor: trendmicro

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

Am I affected?

Timeline

2017-12-16 02:29 UTCPublished CVE record published
2026-06-17 01:05 UTCUpdated Record last modified

trendmicro scanmail DOWNGRADE

Affected: 12.0

Fixed in: no fixed release known

Safe to downgrade to: a release before 12.0

1. Check installed version

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

2. No fixed release: DOWNGRADE to a release before 12.0 (Debian / Ubuntu)

apt-cache madison scanmail sudo apt install scanmail=<VERSION_BEFORE_12.0> sudo apt-mark hold scanmail

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

dnf --showduplicates list scanmail sudo dnf downgrade scanmail-<VERSION_BEFORE_12.0> sudo dnf versionlock add scanmail

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-2017-14090?

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

Is CVE-2017-14090 being exploited?

CVE-2017-14090 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-2017-14090 affect?

CVE-2017-14090 affects scanmail. Severity is critical (CVSS 9.1). A vulnerability in Trend Micro ScanMail for Exchange 12.0 exists in which some communications to the update servers are not encrypted.

How urgent is CVE-2017-14090?

Priority 60/100. Critical severity; Public exploit reference; Remotely exploitable, no login, no user action

Software pages

Trend Micro vulnerabilities

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References

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