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CVE-2026-7601

Open5GS AMF gmm-handler.c denial of service

MEDIUM
4.3
CVSS Score
Published: May 2, 2026 at 02:00 AM UTC
Updated: June 17, 2026 at 11:02 AM UTC
1 product affected across 1 vendorOpen5GS

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Severity
MEDIUM4.3
Exploit prediction
EPSS 0.4%
SSVC
No known exploit

Description

A vulnerability has been found in Open5GS up to 2.7.6. Affected is an unknown function of the file src/amf/gmm-handler.c of the component AMF. The manipulation of the argument reg_type leads to denial of service. The attack is possible to be carried out remotely. Upgrading to version 2.7.7 is able to address this issue. The identifier of the patch is ebc66942b6f8f1fab2d640e71cf4e9f1a423b426. It is advisable to upgrade the affected component.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

Open5GS· OPEN5GS
95%
2.7.02.7.12.7.22.7.32.7.42.7.52.7.6
Vendor states this is fixed in 2.7.7 (unaffected)

Remediation

No guide yet

No remediation guidance has been written for this CVE yet. What the record does show:

Patch and advisory references

References (7)

VDB EntryTechnical Description
Source: cverecord
https://vuldb.com/vuln/360558
SignaturePermissions Required
Source: cverecord
https://vuldb.com/vuln/360558/cti
Third Party Advisory
Source: cverecord
https://vuldb.com/submit/805675
Issue Tracking
Source: cverecord
https://github.com/open5gs/open5gs/issues/4321
Patch
Source: cverecord
https://github.com/open5gs/open5gs/commit/ebc66942b6f8f1fab2d640e71cf4e9f1a423b426
Patch
Source: cverecord
https://github.com/open5gs/open5gs/releases/tag/v2.7.7
Product
Source: cverecord
https://github.com/open5gs/open5gs/

SSVC — Action Prioritization

SSVCNo known exploitNot automatablePartial impact

SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.

CVSS

4.3MEDIUMVulDB
Vector?

Quick Info

StatusDEFERRED
CWE
CWE-404

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