CVE-2026-82589 (CVSS 4.3)

Description

A security flaw has been discovered in Open5GS up to 2.7.7. Impacted is the function amf_namf_comm_handle_n1_n2_message_transfer of the file src/amf/namf-handler.c of the component N1-N2 Message Handler. Performing a manipulation of the argument N1N2MessageTransferReqData.n2InfoContainer.smInfo.n2InfoContent.ngapIeType results in denial of service. The attack may be initiated remotely. The exploit has been released to the public and may be used for attacks. Upgrading to version 2.8.0 is recommended to address this issue. The patch is named abf8a836564b966b5141110fc25ed413c4f17522. It is advisable to upgrade the affected component.

Is your site exposed to CVE-2026-82589?

Run a free security scan — no signup, results in seconds.

CVSS v3.1 Score

4.3

MEDIUM

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L

EPSS — Exploit Prediction

0.0031

Probability of exploitation

0.24%

Percentile rank

EPSS estimates the probability that this vulnerability will be exploited in the wild within the next 30 days. A higher score means more likely to be exploited.

Weakness Type (CWE)

CWE-404 CWE-404

References

Other References

https://github.com/open5gs/open5gs/ https://github.com/open5gs/open5gs/commit/abf8a836564b966b5141110fc25ed413c4f17522 https://github.com/open5gs/open5gs/issues/4396 https://github.com/open5gs/open5gs/releases/tag/v2.8.0 https://vuldb.com/cve/CVE-2026-82589 https://vuldb.com/submit/891892 https://vuldb.com/vuln/397084 https://vuldb.com/vuln/397084/cti

Frequently Asked Questions

What is CVE-2026-82589? +

A security flaw has been discovered in Open5GS up to 2.7.7. Impacted is the function amf_namf_comm_handle_n1_n2_message_transfer of the file src/amf/namf-handler.c of the component N1-N2 Message Handler. Performing a manipulation of the argument N1N2MessageTransferReqData.n2InfoContainer.smInfo.n2InfoContent.ngapIeType results in denial of service. The attack may be initiated remotely. The exploit has been released to the public and may be used for attacks. Upgrading to version 2.8.0 is recommended to address this issue. The patch is named abf8a836564b966b5141110fc25ed413c4f17522. It is advisable to upgrade the affected component. It has a CVSS v3.1 base score of 4.3 (MEDIUM).

How severe is CVE-2026-82589? +

CVE-2026-82589 has a CVSS v3.1 score of 4.3 out of 10, rated MEDIUM. This is a medium-severity vulnerability that should be remediated as part of regular maintenance. The EPSS score is 0.0031, placing it in the 0th percentile for exploitation probability.

How do I check if I'm vulnerable to CVE-2026-82589? +

You can use Secably's free Website Scanner to check your website for known vulnerabilities. For infrastructure scanning, use the Port Scanner to identify exposed services that may be affected. Check the vendor advisories linked above for specific patch and version information.

Related Vulnerabilities

CVE-2025-6202

Vulnerability in SK Hynix DDR5 on x86 allows a local attacker to trigger Rowhammer bit flips impacting the Hardware Integrity …

CVE-2026-45174

Idira Endpoint Privilege Manager Linux Agent versions prior to 26.5 allow a local attacker to potentially compromise the agent daemon …

CVE-2026-17610

In SiSDK v2026.6.0 and earlier, high network traffic loads can cause a dropped ACK leading to a denial of service. …

CVE-2026-11317

A denial of service security issue exists in the affected product. The security issue stems from a fault occurring when …

CVE-2024-31611 9.1

SeaCMS 12.9 has a file deletion vulnerability via admin_template.php.

CVE-2026-41869 9.1

Missing Authorization, Improper Resource Shutdown and Job Interruption vulnerability in Apache Nutch Server (Nutch REST API). This issue affects Apache …

CVE-2026-82589