CVE-2026-4531Free5GC AMF handler.go HandleRegistrationComplete denial of service
Updated under an hour ago ()
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It affects n/a Free5GC. Add what you run to find out whether that includes you.
No exploitation reported and no EPSS estimate yet.
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A weakness has been identified in Free5GC 4.1.0. Affected is the function HandleRegistrationComplete of the file internal/gmm/handler.go of the component AMF. Executing a manipulation can lead to denial of service. The attack may be performed from remote. This patch is called 52e9386401ce56ea773c5aa587d4cdf7d53da799. It is best practice to apply a patch to resolve this issue.
- CVSS
- 5.3 MEDIUM (v3.1, CNA)CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L/E:X/RL:O/RC:C
- Weakness (CWE)
- CWE-404
- Known exploited
- Not in CISA's KEV catalog
- EPSS (exploitation in the next 30 days)
- Not loaded for this CVE
- Assigned by
- VulDB
- NVD analysis
- Deferred
- Record last updated
- Mar 23, 2026
- First seen by InfoSec Signals
- Oct 9, 2026
Affected products
n/a Free5GC free5gc:free5gc | 4.1.0 | CNA record |
References
- https://vuldb.com/?id.352319vdb-entry, technical-description
- https://vuldb.com/?ctiid.352319signature, permissions-required
- https://vuldb.com/?submit.774073third-party-advisory
- https://github.com/free5gc/free5gc/issues/792issue-tracking
- https://github.com/free5gc/amf/pull/198issue-tracking, patch
- https://github.com/free5gc/amf/commit/52e9386401ce56ea773c5aa587d4cdf7d53da799patch
- https://github.com/free5gc/free5gc/product
The CVE record on cve.org NVD's entry
The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.