CVE-2017-9046: winpm-32.exe in Pegasus Mail (aka Pmail) v4.72 build 572 allows code execution via a crafted ssgp.dll file tha

This month

HIGH 7.3DOWNGRADE

CVE-2017-9046 is a high-severity flaw (CVSS 7.3) affecting pegasus. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

winpm-32.exe in Pegasus Mail (aka Pmail) v4.72 build 572 allows code execution via a crafted ssgp.dll file that must be installed locally. For example, if ssgp.dll is on the desktop and executes arbitrary code in the DllMain function, then clicking on a mailto: link on a remote web page triggers the attack.

Why this priority

High severity
Public exploit reference

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

Risk facts

CVSS score	7.3 (High)
Attack vector	Local
Attack complexity	Low
Privileges needed	Low
User interaction	Required
EPSS exploit chance	0.6% (top 53%)
CISA exploited list	No
Weakness	CWE-20
Published	2017-05-21
Last modified	2026-06-17

Publisher (CNA): MITRE · Vendor: pmail

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

Am I affected?

Timeline

2017-05-21 14:29 UTCPublished CVE record published
2026-06-17 01:27 UTCUpdated Record last modified

pmail pegasus DOWNGRADE

Affected: 4.72

Fixed in: no fixed release known

Safe to downgrade to: a release before 4.72

1. Check installed version

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

2. No fixed release: DOWNGRADE to a release before 4.72 (Debian / Ubuntu)

apt-cache madison pegasus sudo apt install pegasus=<VERSION_BEFORE_4.72> sudo apt-mark hold pegasus

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

dnf --showduplicates list pegasus sudo dnf downgrade pegasus-<VERSION_BEFORE_4.72> sudo dnf versionlock add pegasus

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-2017-9046?

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

Is CVE-2017-9046 being exploited?

CVE-2017-9046 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-2017-9046 affect?

CVE-2017-9046 affects pegasus. Severity is high (CVSS 7.3). winpm-32.exe in Pegasus Mail (aka Pmail) v4.72 build 572 allows code execution via a crafted ssgp.dll file that must be installed locally. For example, if ssgp.dll is on the desktop and executes arbitrary code in the DllMain function, then

How urgent is CVE-2017-9046?

Priority 42/100. High severity; Public exploit reference

References

← Back to latest CVEs