CVE-2026-82552Public exploitNetwork attack vectorHinoki check available

5G registration denial via stale AMF contexts

Published Aug 30, 2026 · Updated Aug 30, 2026

Improper resource release in Linux Foundation Magma 1.9.0 allows remote authenticated users to block 5G device registrations. The AMF termination path fails to remove gNB and UE contexts, leaving a reused RAN_UE_NGAP_ID permanently marked as occupied. The flaw requires a gNB association and reused identifier; affected devices remain unable to register until the AMF context is reset.

CVSS severity4.3
Medium
EPSS probability0.30%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkAvailable
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Summary

What happened

Improper resource release in Linux Foundation Magma 1.9.0 allows remote authenticated users to block 5G device registrations. The AMF termination path fails to remove gNB and UE contexts, leaving a reused RAN_UE_NGAP_ID permanently marked as occupied. The flaw requires a gNB association and reused identifier; affected devices remain unable to register until the AMF context is reset.

The record

CVE
CVE-2026-82552
Published
Aug 30, 2026
Updated
Aug 30, 2026
Vendor
Linux Foundation
Product
Magma
Classifications
CWE-404, T1499
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Aug 30, 2026CVE publishedPublication date reported by the CVE source.
  2. Aug 30, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=1.9.0

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

Linux Foundation · Magmaversion=1.9.0

Published CVSS scores

4.3VulDBCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L
4.0VulDBAV:N/AC:L/Au:S/C:N/I:N/A:P
5.3VulDBCVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N
4.3VulDBCVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

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No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-404Improper Resource Shutdown or Release
T1499Endpoint Denial of Service

Public exploit references

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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