CVE-2019-10229: An issue was discovered in MailStore Server (and Service Provider Edition) 9.x through 11.x before 11.2.2

This month

HIGH 8.8UPGRADEUPGRADE

CVE-2019-10229 is a high-severity flaw (CVSS 8.8) affecting mailstore, mailstore server. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

An issue was discovered in MailStore Server (and Service Provider Edition) 9.x through 11.x before 11.2.2. When the directory service (for synchronizing and authenticating users) is set to Generic LDAP, an attacker is able to login as an existing user with an arbitrary password on the second login attempt.

Why this priority

High severity

A fixed release or distro patch exists.

Risk facts

CVSS score	8.8 (High)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	Low
User interaction	None
EPSS exploit chance	0.8% (top 42%)
CISA exploited list	No
Weakness	CWE-613
Published	2019-12-31
Last modified	2026-06-17

Publisher (CNA): MITRE · Vendor: mailstore

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

Am I affected?

Timeline

2019-12-31 15:15 UTCPublished CVE record published
2026-06-17 02:10 UTCUpdated Record last modified

mailstore mailstore UPGRADE

Affected: >= 9.6 and <= 11.2.1

Fixed in: newer than 11.2.1

Safe to downgrade to: a release before 9.6

1. Check installed version

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

2. UPGRADE to newer than 11.2.1 (Debian / Ubuntu)

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

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade mailstore

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 9.6 (Debian / Ubuntu)

apt-cache madison mailstore sudo apt install mailstore=<VERSION_BEFORE_9.6> sudo apt-mark hold mailstore

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

dnf --showduplicates list mailstore sudo dnf downgrade mailstore-<VERSION_BEFORE_9.6> sudo dnf versionlock add mailstore

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.

mailstore mailstore server UPGRADE

Affected: >= 9.6 and <= 11.2.1

Fixed in: newer than 11.2.1

Safe to downgrade to: a release before 9.6

1. Check installed version

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

2. UPGRADE to newer than 11.2.1 (Debian / Ubuntu)

sudo apt update && sudo apt install --only-upgrade mailstore-server

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade mailstore-server

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 9.6 (Debian / Ubuntu)

apt-cache madison mailstore-server sudo apt install mailstore-server=<VERSION_BEFORE_9.6> sudo apt-mark hold mailstore-server

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

dnf --showduplicates list mailstore-server sudo dnf downgrade mailstore-server-<VERSION_BEFORE_9.6> sudo dnf versionlock add mailstore-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-2019-10229?

mailstore: upgrade to newer than 11.2.1; mailstore server: upgrade to newer than 11.2.1. Exact commands for each OS are on this page.

Is CVE-2019-10229 being exploited?

CVE-2019-10229 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-2019-10229 affect?

CVE-2019-10229 affects mailstore, mailstore server. Severity is high (CVSS 8.8). An issue was discovered in MailStore Server (and Service Provider Edition) 9.x through 11.x before 11.2.2. When the directory service (for synchronizing and authenticating users) is set to Generic LDAP, an attacker is able to login as an ex

How urgent is CVE-2019-10229?

Priority 45/100. High severity

References

← Back to latest CVEs