NovumOS has Arbitrary Memory Mapping via Syscall 15 (MemoryMapRange)_CVE-2026-40572

{
    "lastseen": "",
    "description": "NovumOS is a custom 32-bit operating system written in Zig and x86 Assembly. In versions prior to 0.24, Syscall 15 (MemoryMapRange) allows Ring 3 user-mode processes to map arbitrary virtual address ranges into their address space without validating against forbidden regions, including critical kernel structures such as the IDT, GDT, TSS, and page tables. A local attacker can exploit this to modify kernel interrupt handlers, resulting in privilege escalation from user mode to kernel context. This issue has been fixed in version 0.24.",
    "published": "2026-04-18T00:16:02.590Z",
    "modified": "2026-04-18T00:16:02.590Z",
    "type": "cve",
    "title": "NovumOS has Arbitrary Memory Mapping via Syscall 15 (MemoryMapRange)",
    "source": "GitHub_M",
    "references": "https://github.com/MinecAnton209/NovumOS/security/advisories/GHSA-rg7m-6vh7-f4v2\nhttps://github.com/MinecAnton209/NovumOS/releases/tag/v0.24",
    "id": "CVE-2026-40572",
    "bulletinFamily": "",
    "cwe": [
        "CWE-269"
    ],
    "cvelist": null,
    "sourceData": "MinecAnton209 NovumOS < 0.24",
    "sourceHref": "",
    "cvss": {
        "score": 9,
        "severity": "CRITICAL",
        "vector": "CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:N",
        "version": "3.1"
    },
    "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": "NovumOS",
    "version": "< 0.24",
    "vendor": "MinecAnton209",
    "ai_description": "Arbitrary memory mapping vulnerability via Syscall 15, allowing privilege escalation from user mode to kernel context",
    "ai_severity": "Critical",
    "ai_vendor": "MinecAnton209",
    "ai_product": "NovumOS",
    "ai_version": "< 0.24",
    "ai_score": 9
}