CVE-2022-24732: Maddy Mail Server is an open source SMTP compatible email server

Routine

MEDIUM 6.3UPGRADE

CVE-2022-24732 is a medium-severity flaw (CVSS 6.3) affecting maddy. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

Maddy Mail Server is an open source SMTP compatible email server. Versions of maddy prior to 0.5.4 do not implement password expiry or account expiry checking when authenticating using PAM. Users are advised to upgrade. Users unable to upgrade should manually remove expired accounts via existing filtering mechanisms.

Why this priority

No elevated risk signals yet

A fixed release or distro patch exists.

Risk facts

CVSS score	6.3 (Medium)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	Low
User interaction	None
EPSS exploit chance	0.4% (top 65%)
CISA exploited list	No
Weakness	CWE-324, CWE-613
Published	2022-03-09
Last modified	2026-06-17

Publisher (CNA): GitHub, Inc. · Vendor: maddy project

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

Am I affected?

Timeline

2022-03-09 20:15 UTCPublished CVE record published
2026-06-17 04:32 UTCUpdated Record last modified

maddy project maddy UPGRADE

Affected: >= 0.5.0 and < 0.5.4

Fixed in: 0.5.4

Safe to downgrade to: a release before 0.5.0

1. Check installed version

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

2. UPGRADE to 0.5.4 (Debian / Ubuntu)

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

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade maddy

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 0.5.0 (Debian / Ubuntu)

apt-cache madison maddy sudo apt install maddy=<VERSION_BEFORE_0.5.0> sudo apt-mark hold maddy

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

dnf --showduplicates list maddy sudo dnf downgrade maddy-<VERSION_BEFORE_0.5.0> sudo dnf versionlock add maddy

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-2022-24732?

maddy: upgrade to 0.5.4. Exact commands for each OS are on this page.

Is CVE-2022-24732 being exploited?

CVE-2022-24732 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-2022-24732 affect?

CVE-2022-24732 affects maddy. Severity is medium (CVSS 6.3). Maddy Mail Server is an open source SMTP compatible email server. Versions of maddy prior to 0.5.4 do not implement password expiry or account expiry checking when authenticating using PAM. Users are advised to upgrade. Users unable to upgr

How urgent is CVE-2022-24732?

Priority 31/100. No elevated risk signals yet.

Related CVEs

CVE-2026-40193 HIGH 8.2 UPGRADE maddy is a composable, all-in-one mail server
CVE-2023-27582 CRITICAL 9.1 UPGRADE maddy is a composable, all-in-one mail server
CVE-2021-42583 HIGH 7.5 UPGRADE A Broken or Risky Cryptographic Algorithm exists in Max Mazurov Maddy before 0.5.2, which is an unnecessary ri

References

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