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    3 vulnerabilities by MinecAnton209

    CVE-2026-40573 (GCVE-0-2026-40573)

    Vulnerability from cvelistv5 – Published: 2026-10-30 20:31 – Updated: 2026-11-05 02:46
    VLAI
    Title
    NovumOS: Nova Interpreter Privilege Escalation
    Summary
    NovumOS is a custom 32-bit operating system written in Zig and x86 Assembly. Prior to version 0.25-beta.1, the `Nova` interpreter runs in Ring 0 with unrestricted kernel-memory access. Loading a malicious `.nv` script through the shell permits a local user to execute code with kernel privileges without security checks. The advisory identifies VM initialization in `zig/nova/vm.zig` as the affected component; script execution is not isolated in a restricted Ring 3 privilege domain. This issue is fixed in version 0.25-beta.1.
    Severity
    8.6 (High)
    CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:H
    SSVC
    Exploitation: poc Automatable: no Technical Impact: total
    CISA Coordinator · CISA-ADP (v2.0.3)
    Decision recorded 2026-11-05 02:45 UTC
    CWE
    • CWE-250 - Execution with Unnecessary Privileges
    Assigner
    GitHub_M CNA
    References
    Impacted products
    Vendor Product Version
    MinecAnton209 NovumOS Affected: < 0.25-beta.1
    		Create a notification for this product.
    Show details on NVD website
    To clipboard 

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        "title": "CISA ADP Vulnrichment"
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    CVE-2026-40572 (GCVE-0-2026-40572)

    Vulnerability from cvelistv5 – Published: 2026-04-18 00:16 – Updated: 2026-04-20 14:55
    VLAI
    Title
    NovumOS has Arbitrary Memory Mapping via Syscall 15 (MemoryMapRange)
    Summary
    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.
    Severity
    9 (Critical)
    CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:N
    SSVC
    Exploitation: poc Automatable: no Technical Impact: total
    CISA Coordinator · CISA-ADP (v2.0.3)
    Decision recorded 2026-04-20 14:45 UTC
    CWE
    • CWE-269 - Improper Privilege Management
    Assigner
    GitHub_M CNA
    References
    Impacted products
    Vendor Product Version
    MinecAnton209 NovumOS Affected: < 0.24
    		Create a notification for this product.
    Show details on NVD website
    To clipboard 

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    CVE-2026-40317 (GCVE-0-2026-40317)

    Vulnerability from cvelistv5 – Published: 2026-04-18 00:12 – Updated: 2026-04-20 15:26
    VLAI
    Title
    NovumOS has Privilege Escalation in the Syscall Interface
    Summary
    NovumOS is a custom 32-bit operating system written in Zig and x86 Assembly. In versions prior to 0.24, Syscall 12 (JumpToUser) accepts an arbitrary entry point address from user-space registers without validation, allowing any Ring 3 user-mode process to jump to kernel addresses and execute arbitrary code in Ring 0 context, resulting in local privilege escalation. This issue has been fixed in version 0.24. If developers are unable to immediately update, they should restrict syscall access by running the system in single-user mode without Ring 3, and disable user-mode processes by only running kernel shell with no user processes. This issue has been fixed in version 0.24.
    Severity
    9.4 (Critical)
    CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H
    SSVC
    Exploitation: poc Automatable: no Technical Impact: total
    CISA Coordinator · CISA-ADP (v2.0.3)
    Decision recorded 2026-04-20 15:26 UTC
    CWE
    • CWE-269 - Improper Privilege Management
    • CWE-20 - Improper Input Validation
    Assigner
    GitHub_M CNA
    References
    Impacted products
    Vendor Product Version
    MinecAnton209 NovumOS Affected: < 0.24
    		Create a notification for this product.
    Show details on NVD website
    To clipboard 

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