CVE-2026-40572

{"id": "CVE-2026-40572", "cveTags": [], "metrics": {"cvssMetricV31": [{"type": "Secondary", "source": "security-advisories@github.com", "cvssData": {"scope": "CHANGED", "version": "3.1", "baseScore": 9.0, "attackVector": "LOCAL", "baseSeverity": "CRITICAL", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:N", "integrityImpact": "HIGH", "userInteraction": "NONE", "attackComplexity": "LOW", "availabilityImpact": "NONE", "privilegesRequired": "NONE", "confidentialityImpact": "HIGH"}, "impactScore": 5.8, "exploitabilityScore": 2.5}]}, "published": "2026-04-18T01:16:19.663", "references": [{"url": "https://github.com/MinecAnton209/NovumOS/releases/tag/v0.24", "tags": ["Release Notes"], "source": "security-advisories@github.com"}, {"url": "https://github.com/MinecAnton209/NovumOS/security/advisories/GHSA-rg7m-6vh7-f4v2", "tags": ["Exploit", "Vendor Advisory"], "source": "security-advisories@github.com"}], "vulnStatus": "Analyzed", "weaknesses": [{"type": "Primary", "source": "security-advisories@github.com", "description": [{"lang": "en", "value": "CWE-269"}]}], "descriptions": [{"lang": "en", "value": "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."}], "lastModified": "2026-04-27T14:13:28.607", "configurations": [{"nodes": [{"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:o:minecanton209:novumos:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "A40C9D50-FA65-41F9-859B-D8C31D3E55AC", "versionEndExcluding": "0.24"}], "operator": "OR"}]}], "sourceIdentifier": "security-advisories@github.com"}