CVE-2026-9301Public exploitNetwork attack vector

Remote service crash via nil Cause dereference

Published May 23, 2026 · Updated May 23, 2026

Nil-pointer dereference in the NGReset handler in Aether SD-Core Project AMF 2.1.0 through 2.1.1 allows remote authenticated users to crash AMF. The handler passes a missing or malformed NGAP Cause value to printAndGetCause, which dereferences a nil pointer and triggers a Go panic. An established NGAP connection with low privileges is sufficient; one crafted message terminates the serving process and interrupts 5G control-plane service.

CVSS severity6.3
Medium
EPSS probability0.23%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Nil-pointer dereference in the NGReset handler in Aether SD-Core Project AMF 2.1.0 through 2.1.1 allows remote authenticated users to crash AMF. The handler passes a missing or malformed NGAP Cause value to printAndGetCause, which dereferences a nil pointer and triggers a Go panic. An established NGAP connection with low privileges is sufficient; one crafted message terminates the serving process and interrupts 5G control-plane service.

The record

CVE
CVE-2026-9301
Published
May 23, 2026
Updated
May 23, 2026
Vendor
Aether SD-Core Project
Product
AMF
Classifications
CWE-119, T1499.004
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. May 23, 2026CVE publishedPublication date reported by the CVE source.
  2. May 23, 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=2.1.0
  2. Affected versionversion=2.1.1

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

Aether SD-Core Project · AMFversion=2.1.0; version=2.1.1

Published CVSS scores

6.3VulDBCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L
2.1VulDBCVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:P
6.5VulDBAV:N/AC:L/Au:S/C:P/I:P/A: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.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

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-119Improper Restriction of Operations within the Bounds of a Memory Buffer
T1499.004Application or System Exploitation

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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