CVE-2024-45394: Authenticator is a browser extension that generates two-step verification codes

Q: How do I fix CVE-2024-45394?

authenticator: upgrade to 8.0.0. Exact commands for each OS are on this page.

Q: Is CVE-2024-45394 being exploited?

CVE-2024-45394 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-2024-45394 affect?

CVE-2024-45394 affects authenticator. Severity is high (CVSS 8.8). Authenticator is a browser extension that generates two-step verification codes. In versions 7.0.0 and below, encryption keys for user data were stored encrypted at-rest using only AES-256 and the EVP_BytesToKey KDF. Therefore, attackers wi

Routine

HIGH 8.8UPGRADE

CVE-2024-45394 is a high-severity flaw (CVSS 8.8) affecting authenticator. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

Authenticator is a browser extension that generates two-step verification codes. In versions 7.0.0 and below, encryption keys for user data were stored encrypted at-rest using only AES-256 and the EVP_BytesToKey KDF. Therefore, attackers with a copy of a user's data are able to brute-force the user's encryption key. Users on version 8.0.0 and above are automatically migrated away from the weak encoding on first login. Users should destroy encrypt

Why this priority

High severity

A fixed release or distro patch exists.

Risk facts

CVSS score	8.8 (High)
Attack vector	Local
Attack complexity	Low
Privileges needed	Low
User interaction	None
EPSS exploit chance	0.1% (top 100%)
CISA exploited list	No
Weakness	CWE-261, CWE-327, CWE-326
Published	2024-09-03
Last modified	2026-06-17

Publisher (CNA): GitHub, Inc. · Vendor: authenticator

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

Am I affected?

Timeline

2024-09-03 21:15 UTCPublished CVE record published
2026-06-17 07:54 UTCUpdated Record last modified

authenticator authenticator UPGRADE

Affected: < 8.0.0

Fixed in: 8.0.0

Safe to downgrade to: no unaffected older release

1. Check installed version

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

2. UPGRADE to 8.0.0 (Debian / Ubuntu)

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

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade authenticator

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-2024-45394?

authenticator: upgrade to 8.0.0. Exact commands for each OS are on this page.

Is CVE-2024-45394 being exploited?

CVE-2024-45394 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-2024-45394 affect?

CVE-2024-45394 affects authenticator. Severity is high (CVSS 8.8). Authenticator is a browser extension that generates two-step verification codes. In versions 7.0.0 and below, encryption keys for user data were stored encrypted at-rest using only AES-256 and the EVP_BytesToKey KDF. Therefore, attackers wi

How urgent is CVE-2024-45394?

Priority 31/100. High severity

Related CVEs

CVE-2026-33875 CRITICAL 9.3 UPGRADE Gematik Authenticator securely authenticates users for login to digital health applications
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CVE-2026-33874 HIGH 7.8 UPGRADE Gematik Authenticator securely authenticates users for login to digital health applications
CVE-2025-54154 MEDIUM 6.8 UPGRADE An improper authentication vulnerability has been reported to affect QNAP Authenticator
CVE-2026-80097 HIGH 8.6 UPGRADE Improper authentication in Microsoft Authenticator allows an unauthorized attacker to elevate privileges local

References

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