Plattform
linux
Komponente
novumos
Behoben in
0.24.1
CVE-2026-40572 is a critical vulnerability affecting NovumOS, a custom operating system. It arises from insufficient validation within the MemoryMapRange syscall, enabling user-mode processes to map arbitrary memory regions, including sensitive kernel structures. Successful exploitation allows a local attacker to escalate privileges to kernel context, potentially gaining complete control of the system. This vulnerability impacts NovumOS versions prior to 0.24, and a fix is available in version 0.24.
The impact of CVE-2026-40572 is severe due to its potential for privilege escalation. An attacker exploiting this vulnerability can directly modify critical kernel structures, including the Interrupt Descriptor Table (IDT), Global Descriptor Table (GDT), Thread-Specific Storage (TSS), and page tables. This allows them to hijack interrupt handlers, effectively gaining kernel-level access. The attacker could then execute arbitrary code with the highest privileges, leading to complete system compromise, data theft, and denial of service. This vulnerability is particularly concerning given NovumOS's custom nature, which may limit available security tooling and monitoring capabilities compared to more mainstream operating systems.
CVE-2026-40572 was publicly disclosed on 2026-04-18. The vulnerability is not currently listed on CISA KEV, and its EPSS score is pending evaluation. No public proof-of-concept (PoC) code has been released at the time of writing, but the potential for exploitation is high given the direct impact on kernel memory management. Active exploitation campaigns are not currently confirmed.
Exploit-Status
EPSS
0.02% (4% Perzentil)
CISA SSVC
CVSS-Vektor
The primary mitigation for CVE-2026-40572 is to immediately upgrade NovumOS to version 0.24 or later, which includes the necessary fix. If upgrading is not immediately feasible due to compatibility concerns or system downtime requirements, consider implementing strict access controls to limit user-mode processes' ability to interact with system memory. While a WAF or proxy is unlikely to be effective against this kernel-level vulnerability, reviewing and hardening system configuration to minimize the attack surface is recommended. There are no specific Sigma or YARA rules readily available for this vulnerability due to its custom nature, but monitoring system calls, particularly Syscall 15 (MemoryMapRange), is advised.
Aktualisieren Sie NovumOS auf Version 0.24 oder höher, um die Vulnerabilität zu mindern. Dieses Update behebt das Fehlen der Validierung von beliebigen Speicherbereichen bei der Verwendung der Systemaufruf MemoryMapRange und verhindert so die Privilegienerhöhung.
Schwachstellenanalysen und kritische Warnungen direkt in deinen Posteingang.
NovumOS is a custom 32-bit operating system written in Zig and x86 Assembly.
It allows privilege escalation from user to kernel mode, meaning an attacker can gain complete control of the system.
If you are using a version of NovumOS prior to 0.24, you are vulnerable.
Implement strict access controls and monitor system logs for suspicious activity.
Currently, there are no specific tools available, but updating to version 0.24 is the recommended solution.
Lade deine Abhängigkeitsdatei hoch und erfahre sofort, ob dich diese und andere CVEs treffen.