CVE-2017-14091: A vulnerability in Trend Micro ScanMail for Exchange 12.0 exists in which certain specific installations that

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HIGH 7.5DOWNGRADE

CVE-2017-14091 is a high-severity flaw (CVSS 7.5) 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 certain specific installations that utilize a uncommon feature - Other Update Sources - could be exploited to overwrite sensitive files in the ScanMail for Exchange directory.

Why this priority

High severity
Public exploit reference

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

Risk facts

CVSS score	7.5 (High)
Attack vector	Network (remote)
Attack complexity	High
Privileges needed	None
User interaction	Required
EPSS exploit chance	0.7% (top 45%)
CISA exploited list	No
Weakness	CWE-345
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-2017-14091?

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

Is CVE-2017-14091 being exploited?

CVE-2017-14091 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-2017-14091 affect?

CVE-2017-14091 affects scanmail. Severity is high (CVSS 7.5). A vulnerability in Trend Micro ScanMail for Exchange 12.0 exists in which certain specific installations that utilize a uncommon feature - Other Update Sources - could be exploited to overwrite sensitive files in the ScanMail for Exchange d

How urgent is CVE-2017-14091?

Priority 45/100. High severity; Public exploit reference

Software pages

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References

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