Free5GC SMF SessionDeletionResponse null pointer dereference_CVE-2026-1976

6.9 / 10

MEDIUM

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

Description

A weakness has been identified in Free5GC up to 4.1.0. Affected is the function SessionDeletionResponse of the component SMF. This manipulation causes null pointer dereference. The attack is possible to be carried out remotely. The exploit has been made available to the public and could be used for attacks. It is suggested to install a patch to address this issue.

Basic Information

ID CVE-2026-1976

Source VulDB

Published Feb 6, 2026 at 03:02

Affected Product

Vendor n/a

Product Free5GC

Version 4.0

Affected Versions n/a Free5GC 4.0
n/a Free5GC 4.1.0

CWE Classification

CWE-476 CWE-404

References

{
    "lastseen": "",
    "description": "A weakness has been identified in Free5GC up to 4.1.0. Affected is the function SessionDeletionResponse of the component SMF. This manipulation causes null pointer dereference. The attack is possible to be carried out remotely. The exploit has been made available to the public and could be used for attacks. It is suggested to install a patch to address this issue.",
    "published": "2026-02-06T03:02:11.211Z",
    "modified": "2026-02-06T03:02:11.211Z",
    "type": "cve",
    "title": "Free5GC SMF SessionDeletionResponse null pointer dereference",
    "source": "VulDB",
    "references": "https://vuldb.com/?id.344498\nhttps://vuldb.com/?ctiid.344498\nhttps://vuldb.com/?submit.743239\nhttps://github.com/free5gc/free5gc/issues/817\nhttps://github.com/free5gc/free5gc/issues/817#issue-3832188092\nhttps://github.com/free5gc/smf/pull/189\nhttps://github.com/free5gc/free5gc/",
    "id": "CVE-2026-1976",
    "bulletinFamily": "",
    "cwe": [
        "CWE-476",
        "CWE-404"
    ],
    "cvelist": null,
    "sourceData": "n/a Free5GC 4.0\nn/a Free5GC 4.1.0",
    "sourceHref": "",
    "cvss": {
        "score": 6.9,
        "severity": "MEDIUM",
        "vector": "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:P",
        "version": "4.0"
    },
    "cvss2": [],
    "cvss3": {
        "version": "",
        "vectorString": "",
        "baseScore": 0,
        "baseSeverity": "",
        "attackVector": "",
        "attackComplexity": "",
        "privilegesRequired": "",
        "userInteraction": "",
        "scope": "",
        "confidentialityImpact": "",
        "integrityImpact": "",
        "availabilityImpact": "",
        "cvssV3": {
            "version": "",
            "vectorString": "",
            "baseScore": 0,
            "baseSeverity": "",
            "attackVector": "",
            "attackComplexity": "",
            "privilegesRequired": "",
            "userInteraction": "",
            "scope": "",
            "confidentialityImpact": "",
            "integrityImpact": "",
            "availabilityImpact": ""
        }
    },
    "href": "",
    "category_name": "CVE",
    "post_link": "",
    "product": "Free5GC",
    "version": "4.0",
    "vendor": "n/a",
    "ai_description": "",
    "ai_severity": "",
    "ai_vendor": "",
    "ai_product": "",
    "ai_version": "",
    "ai_score": 0
}