CVE-2026-5360: A vulnerability has been found in Free5GC 4.2.0

Routine

LOW 3.7REMOTEDOWNGRADE

CVE-2026-5360 is a low-severity flaw (CVSS 3.7) affecting free5gc. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

A vulnerability has been found in Free5GC 4.2.0. The affected element is an unknown function of the component aper. Such manipulation leads to type confusion. The attack may be launched remotely. This attack is characterized by high complexity. The exploitability is described as difficult. The exploit has been disclosed to the public and may be used. The name of the patch is 26205eb01705754b7b902ad6c4b613c96c881e29. It is best practice to apply a

Why this priority

Remotely exploitable, no login, no user action

No fix is published yet: follow the downgrade or mitigation steps.

Risk facts

CVSS score	3.7 (Low)
Attack vector	Network (remote)
Attack complexity	High
Privileges needed	None
User interaction	None
EPSS exploit chance	0.4% (top 63%)
CISA exploited list	No
Weakness	CWE-843
Published	2026-04-02
Last modified	2026-07-24

Publisher (CNA): VulDB · Vendor: free5gc

Last updated 2026-07-24 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2026-04-02 17:16 UTCPublished CVE record published
2026-07-24 20:10 UTCUpdated Record last modified

free5gc free5gc DOWNGRADE

Affected: 4.2.0

Fixed in: no fixed release known

Safe to downgrade to: a release before 4.2.0

1. Check installed version

apt-cache policy free5gc || rpm -q free5gc || free5gc --version

2. No fixed release: DOWNGRADE to a release before 4.2.0 (Debian / Ubuntu)

apt-cache madison free5gc sudo apt install free5gc=<VERSION_BEFORE_4.2.0> sudo apt-mark hold free5gc

2. No fixed release: DOWNGRADE (RHEL / Amazon Linux / Fedora)

dnf --showduplicates list free5gc sudo dnf downgrade free5gc-<VERSION_BEFORE_4.2.0> sudo dnf versionlock add free5gc

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-2026-5360?

free5gc: downgrade or apply the listed mitigation. Exact commands for each OS are on this page.

Is CVE-2026-5360 being exploited?

CVE-2026-5360 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-2026-5360 affect?

CVE-2026-5360 affects free5gc. Severity is low (CVSS 3.7). A vulnerability has been found in Free5GC 4.2.0. The affected element is an unknown function of the component aper. Such manipulation leads to type confusion. The attack may be launched remotely. This attack is characterized by high complex

How urgent is CVE-2026-5360?

Priority 27/100. Remotely exploitable, no login, no user action

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References

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