CVE-2026-82549Public exploitNetwork attack vectorHinoki check available

Unauthenticated integrity bypass via IA0 acceptance

Published Aug 30, 2026 · Updated Aug 30, 2026

Improper integrity validation in Magma 1.9.0 allows remote attackers to bypass 5G NAS message integrity during registration. The AMF accepts a UE advertising only IA0 and completes SecurityModeComplete with a zero MAC instead of rejecting the unsupported integrity choice. A Docker-based Access Gateway with 5G support and default configuration is exposed, permitting forged or replayed NAS messages to proceed without integrity protection.

CVSS severity8.3
High
EPSS probability0.19%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkAvailable
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Summary

What happened

Improper integrity validation in Magma 1.9.0 allows remote attackers to bypass 5G NAS message integrity during registration. The AMF accepts a UE advertising only IA0 and completes SecurityModeComplete with a zero MAC instead of rejecting the unsupported integrity choice. A Docker-based Access Gateway with 5G support and default configuration is exposed, permitting forged or replayed NAS messages to proceed without integrity protection.

The record

CVE
CVE-2026-82549
Published
Aug 30, 2026
Updated
Aug 30, 2026
Vendor
Linux Foundation
Product
Magma
Classifications
CWE-354, CWE-345, T1190
Attack vector
network
Privileges
unauthenticated

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 privilegesunauthenticated

What is affected?

Linux Foundation · Magmaversion=1.9.0

Published CVSS scores

8.3NVDCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:L/A:L
8.3VulDB CNACVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:L/A:L/E:P/RL:X/RC:R
7.5NVDAV:N/AC:L/Au:N/C:P/I:P/A:P
8.3VulDB CNACVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:L/A:L/E:P/RL:X/RC:R
7.5VulDB CNAAV:N/AC:L/Au:N/C:P/I:P/A:P/E:POC/RL:ND/RC:UR
6.9VulDB CNACVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:L/VA:L/SC:L/SI:L/SA:L/E:P

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
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-354Improper Validation of Integrity Check Value
CWE-345Insufficient Verification of Data Authenticity
T1190Exploit Public-Facing Application

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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