CVE-2017-12844: Cross-site scripting (XSS) vulnerability in the admin panel in IceWarp Mail Server 10.4.4 allows remote authen

Routine

MEDIUM 4.8DOWNGRADE

CVE-2017-12844 is a medium-severity flaw (CVSS 4.8) affecting mail server. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

Cross-site scripting (XSS) vulnerability in the admin panel in IceWarp Mail Server 10.4.4 allows remote authenticated domain administrators to inject arbitrary web script or HTML via a crafted user name.

Why this priority

Public exploit reference

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

Risk facts

CVSS score	4.8 (Medium)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	High
User interaction	Required
EPSS exploit chance	0.8% (top 44%)
CISA exploited list	No
Weakness	CWE-79
Published	2017-08-23
Last modified	2026-06-17

Publisher (CNA): MITRE · Vendor: icewarp

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

Am I affected?

Timeline

2017-08-23 14:29 UTCPublished CVE record published
2026-06-17 01:04 UTCUpdated Record last modified

icewarp mail server DOWNGRADE

Affected: 10.4.4

Fixed in: no fixed release known

Safe to downgrade to: a release before 10.4.4

1. Check installed version

apt-cache policy mail-server || rpm -q mail-server || mail-server --version

2. No fixed release: DOWNGRADE to a release before 10.4.4 (Debian / Ubuntu)

apt-cache madison mail-server sudo apt install mail-server=<VERSION_BEFORE_10.4.4> sudo apt-mark hold mail-server

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

dnf --showduplicates list mail-server sudo dnf downgrade mail-server-<VERSION_BEFORE_10.4.4> sudo dnf versionlock add mail-server

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-2017-12844?

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

Is CVE-2017-12844 being exploited?

CVE-2017-12844 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-2017-12844 affect?

CVE-2017-12844 affects mail server. Severity is medium (CVSS 4.8). Cross-site scripting (XSS) vulnerability in the admin panel in IceWarp Mail Server 10.4.4 allows remote authenticated domain administrators to inject arbitrary web script or HTML via a crafted user name.

How urgent is CVE-2017-12844?

Priority 36/100. Public exploit reference

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References

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