CVE-2025-6224: Certificate generation in juju/utils using the cert.NewLeaf function could include private information

Routine

MEDIUM 6.5UPGRADE

CVE-2025-6224 is a medium-severity flaw (CVSS 6.5) affecting juju\/utils. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

Certificate generation in juju/utils using the cert.NewLeaf function could include private information. If this certificate were then transferred over the network in plaintext, an attacker listening on that network could sniff the certificate and trivially extract the private key from it.

Why this priority

Public exploit reference

A fixed release or distro patch exists.

Risk facts

CVSS score	6.5 (Medium)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	None
User interaction	Required
EPSS exploit chance	0.2% (top 95%)
CISA exploited list	No
Weakness	CWE-312
Published	2025-07-01
Last modified	2026-06-17

Publisher (CNA): Canonical Ltd. · Vendor: canonical

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

Am I affected?

Timeline

2025-07-01 11:15 UTCPublished CVE record published
2026-06-17 10:01 UTCUpdated Record last modified

canonical juju\/utils UPGRADE

Affected: >= 4.0.0 and < 4.0.4

Fixed in: 4.0.4

Safe to downgrade to: a release before 4.0.0

1. Check installed version

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

2. UPGRADE to 4.0.4 (Debian / Ubuntu)

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

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade jujuutils

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 4.0.0 (Debian / Ubuntu)

apt-cache madison jujuutils sudo apt install jujuutils=<VERSION_BEFORE_4.0.0> sudo apt-mark hold jujuutils

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

dnf --showduplicates list jujuutils sudo dnf downgrade jujuutils-<VERSION_BEFORE_4.0.0> sudo dnf versionlock add jujuutils

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-2025-6224?

juju\/utils: upgrade to 4.0.4. Exact commands for each OS are on this page.

Is CVE-2025-6224 being exploited?

CVE-2025-6224 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-2025-6224 affect?

CVE-2025-6224 affects juju\/utils. Severity is medium (CVSS 6.5). Certificate generation in juju/utils using the cert.NewLeaf function could include private information. If this certificate were then transferred over the network in plaintext, an attacker listening on that network could sniff the certifica

How urgent is CVE-2025-6224?

Priority 29/100. Public exploit reference

References

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