CVE-2024-9312: Authd, through version 0.3.6, did not sufficiently randomize user IDs to prevent collisions

Q: How do I fix CVE-2024-9312?

authd: upgrade to 0.3.6. Exact commands for each OS are on this page.

Q: Is CVE-2024-9312 being exploited?

CVE-2024-9312 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

Q: What does CVE-2024-9312 affect?

CVE-2024-9312 affects authd. Severity is high (CVSS 7.5). Authd, through version 0.3.6, did not sufficiently randomize user IDs to prevent collisions. A local attacker who can register user names could spoof another user's ID and gain their privileges.

Q: How urgent is CVE-2024-9312?

Priority 36/100. High severity; Public exploit reference

Routine

HIGH 7.5UPGRADE

CVE-2024-9312 is a high-severity flaw (CVSS 7.5) affecting authd. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

Authd, through version 0.3.6, did not sufficiently randomize user IDs to prevent collisions. A local attacker who can register user names could spoof another user's ID and gain their privileges.

Why this priority

High severity
Public exploit reference

A fixed release or distro patch exists.

Risk facts

CVSS score	7.5 (High)
Attack vector	Local
Attack complexity	High
Privileges needed	High
User interaction	None
EPSS exploit chance	0.3% (top 79%)
CISA exploited list	No
Weakness	CWE-286, CWE-335
Published	2024-10-10
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

2024-10-10 14:15 UTCPublished CVE record published
2026-06-17 08:24 UTCUpdated Record last modified

canonical authd UPGRADE

Affected: < 0.3.6

Fixed in: 0.3.6

Safe to downgrade to: no unaffected older release

1. Check installed version

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

2. UPGRADE to 0.3.6 (Debian / Ubuntu)

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

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade authd

Note

Distros often backport fixes without changing the version number. Confirm with the distro advisory or changelog.

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-2024-9312?

authd: upgrade to 0.3.6. Exact commands for each OS are on this page.

Is CVE-2024-9312 being exploited?

CVE-2024-9312 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-2024-9312 affect?

CVE-2024-9312 affects authd. Severity is high (CVSS 7.5). Authd, through version 0.3.6, did not sufficiently randomize user IDs to prevent collisions. A local attacker who can register user names could spoof another user's ID and gain their privileges.

How urgent is CVE-2024-9312?

Priority 36/100. High severity; Public exploit reference

Related CVEs

CVE-2025-5689 HIGH 8.5 UPGRADE A flaw was found in the temporary user record that authd uses in the pre-auth NSS
CVE-2024-9313 HIGH 8.8 UPGRADE Authd PAM module before version 0.3.5 can allow broker-managed users to impersonate any other user managed by

References

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