Open5GS UDR nudr-handler.c udr_nudr_dr_handle_subscription_context denial of service_CVE-2026-7707

5.3 / 10

MEDIUM

CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:P

Description

A vulnerability was found in Open5GS up to 2.7.7. Impacted is the function udr_nudr_dr_handle_subscription_context of the file /src/udr/nudr-handler.c of the component UDR. The manipulation of the argument pei results in denial of service. The attack can be launched remotely. The exploit has been made public and could be used. The project was informed of the problem early through an issue report but has not responded yet.

Basic Information

ID CVE-2026-7707

Source VulDB

Published May 3, 2026 at 22:30

Affected Product

Vendor n/a

Product Open5GS

Version 2.7.0

Affected Versions n/a Open5GS 2.7.0
n/a Open5GS 2.7.1
n/a Open5GS 2.7.2
n/a Open5GS 2.7.3
n/a Open5GS 2.7.4
n/a Open5GS 2.7.5
n/a Open5GS 2.7.6
n/a Open5GS 2.7.7

CWE Classification

CWE-404

References

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    "lastseen": "",
    "description": "A vulnerability was found in Open5GS up to 2.7.7. Impacted is the function udr_nudr_dr_handle_subscription_context of the file /src/udr/nudr-handler.c of the component UDR. The manipulation of the argument pei results in denial of service. The attack can be launched remotely. The exploit has been made public and could be used. The project was informed of the problem early through an issue report but has not responded yet.",
    "published": "2026-05-03T22:30:12.651Z",
    "modified": "2026-05-03T22:30:12.651Z",
    "type": "cve",
    "title": "Open5GS UDR nudr-handler.c udr_nudr_dr_handle_subscription_context denial of service",
    "source": "VulDB",
    "references": "https://vuldb.com/vuln/360883\nhttps://vuldb.com/vuln/360883/cti\nhttps://vuldb.com/submit/805699\nhttps://vuldb.com/submit/805700\nhttps://github.com/open5gs/open5gs/issues/4410\nhttps://github.com/open5gs/open5gs/issues/4411\nhttps://github.com/open5gs/open5gs/",
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    "sourceData": "n/a Open5GS 2.7.0\nn/a Open5GS 2.7.1\nn/a Open5GS 2.7.2\nn/a Open5GS 2.7.3\nn/a Open5GS 2.7.4\nn/a Open5GS 2.7.5\nn/a Open5GS 2.7.6\nn/a Open5GS 2.7.7",
    "sourceHref": "",
    "cvss": {
        "score": 5.3,
        "severity": "MEDIUM",
        "vector": "CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:P",
        "version": "4.0"
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    "product": "Open5GS",
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