CVE-2024-55402: 4C Strategies Exonaut before v22.4 was discovered to contain an access control issue.

Routine

MEDIUM 5.3REMOTEUPGRADE

CVE-2024-55402 is a medium-severity flaw (CVSS 5.3) affecting exonaut. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

4C Strategies Exonaut before v22.4 was discovered to contain an access control issue.

Why this priority

Remotely exploitable, no login, no user action

A fixed release or distro patch exists.

Risk facts

CVSS score	5.3 (Medium)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	None
User interaction	None
EPSS exploit chance	0.3% (top 73%)
CISA exploited list	No
Weakness	CWE-284
Published	2025-08-06
Last modified	2026-07-05

Publisher (CNA): MITRE · Vendor: 4cstrategies

Last updated 2026-07-05 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2025-08-06 21:15 UTCPublished CVE record published
2026-07-05 01:21 UTCUpdated Record last modified

4cstrategies exonaut UPGRADE

Affected: < 21.6.2.1-1 · >= 22.0 and < 22.4

Fixed in: 21.6.2.1-1, 22.4

Safe to downgrade to: a release before 22.0

1. Check installed version

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

2. UPGRADE to 21.6.2.1-1 (Debian / Ubuntu)

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

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade exonaut

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 22.0 (Debian / Ubuntu)

apt-cache madison exonaut sudo apt install exonaut=<VERSION_BEFORE_22.0> sudo apt-mark hold exonaut

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

dnf --showduplicates list exonaut sudo dnf downgrade exonaut-<VERSION_BEFORE_22.0> sudo dnf versionlock add exonaut

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-2024-55402?

exonaut: upgrade to 21.6.2.1-1, 22.4. Exact commands for each OS are on this page.

Is CVE-2024-55402 being exploited?

CVE-2024-55402 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-2024-55402 affect?

CVE-2024-55402 affects exonaut. Severity is medium (CVSS 5.3). 4C Strategies Exonaut before v22.4 was discovered to contain an access control issue.

How urgent is CVE-2024-55402?

Priority 30/100. Remotely exploitable, no login, no user action

Related CVEs

CVE-2024-55401 MEDIUM 6.5 UPGRADE An issue in 4C Strategies Exonaut before v22.4 allows attackers to execute a directory traversal.
CVE-2024-55399 MEDIUM 6.5 UPGRADE 4C Strategies Exonaut before v21.6.2.1-1 was discovered to contain a Server-Side Request Forgery (SSRF).
CVE-2024-55398 MEDIUM 6.5 UPGRADE 4C Strategies Exonaut before v22.4 was discovered to contain insecure permissions.
CVE-2025-46660 MEDIUM 5.3 DOWNGRADE An issue was discovered in 4C Strategies Exonaut 21.6
CVE-2025-46659 HIGH 7.5 DOWNGRADE An issue was discovered in ExonautWeb in 4C Strategies Exonaut 21.6

References

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