CVE-2026-21693

// CVE-2026-21693 PoC - Malformed ICC Profile triggering Type Confusion // This PoC demonstrates the structure needed to trigger the vulnerability #include <stdio.h> #include <stdlib.h> #include <string.h> // Malicious ICC profile structure to trigger CIccSegmentedCurveXml::ToXml() type confusion unsigned char malicious_icc_profile[] = { // ICC Profile Header (128 bytes) 0x00, 0x00, 0x02, 0x00, // Profile size (little endian) 'A', 'C', 'S', 'P', // Profile signature 0x00, 0x00, 0x00, 0x00, // Preferred CMM type 0x04, 0x00, 0x00, 0x00, // Profile version 0x00, 0x00, 0x00, 0x00, // Profile device class 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, // Color space 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, // PCS 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, // Creation date/time 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, // Profile file signature 0x00, 0x00, 0x00, 0x00, // Primary platform 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, // Profile flags 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, // Device manufacturer 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, // Device model 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, // Device attributes 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, // Rendering intent 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, // PCS illuminant 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, // Profile creator 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 // Profile ID }; int main() { printf("CVE-2026-21693 PoC for iccDEV Type Confusion\n"); printf("Target: CIccSegmentedCurveXml::ToXml() in IccMpeXml.cpp\n"); printf("This PoC generates a malformed ICC profile that triggers type confusion.\n"); printf("The attacker would need to craft specific curve data to exploit.\n"); return 0; }

{"cve": {"id": "CVE-2026-21693", "sourceIdentifier": "[email protected]", "published": "2026-01-07T22:15:45.830", "lastModified": "2026-01-12T18:29:02.290", "vulnStatus": "Analyzed", "cveTags": [], "descriptions": [{"lang": "en", "value": "iccDEV provides a set of libraries and tools that allow for the interaction, manipulation, and application of International Color Consortium (ICC) color management profiles. Versions prior to 2.3.1.2 have a Type Confusion vulnerability in `CIccSegmentedCurveXml::ToXml()` at `IccXML/IccLibXML/IccMpeXml.cpp`. This vulnerability affects users of the iccDEV library who process ICC color profiles. Version 2.3.1.2 contains a patch. No known workarounds are available."}, {"lang": "es", "value": "iccDEV proporciona un conjunto de bibliotecas y herramientas que permiten la interacción, manipulación y aplicación de perfiles de gestión de color del International Color Consortium (ICC). Las versiones anteriores a la 2.3.1.2 tienen una vulnerabilidad de confusión de tipos en 'CIccSegmentedCurveXml::ToXml()' en 'IccXML/IccLibXML/IccMpeXml.cpp'. Esta vulnerabilidad afecta a los usuarios de la biblioteca iccDEV que procesan perfiles de color ICC. La versión 2.3.1.2 contiene un parche. No se conocen soluciones alternativas disponibles."}], "metrics": {"cvssMetricV31": [{"source": "[email protected]", "type": "Secondary", "cvssData": {"version": "3.1", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H", "baseScore": 8.8, "baseSeverity": "HIGH", "attackVector": "NETWORK", "attackComplexity": "LOW", "privilegesRequired": "NONE", "userInteraction": "REQUIRED", "scope": "UNCHANGED", "confidentialityImpact": "HIGH", "integrityImpact": "HIGH", "availabilityImpact": "HIGH"}, "exploitabilityScore": 2.8, "impactScore": 5.9}]}, "weaknesses": [{"source": "[email protected]", "type": "Primary", "description": [{"lang": "en", "value": "CWE-20"}, {"lang": "en", "value": "CWE-681"}, {"lang": "en", "value": "CWE-754"}, {"lang": "en", "value": "CWE-843"}]}], "configurations": [{"nodes": [{"operator": "OR", "negate": false, "cpeMatch": [{"vulnerable": true, "criteria": "cpe:2.3:a:color:iccdev:*:*:*:*:*:*:*:*", "versionEndExcluding": "2.3.1.2", "matchCriteriaId": "D34CF745-E75A-4F1C-AD7B-9AC1A2E9F680"}]}]}], "references": [{"url": "https://github.com/InternationalColorConsortium/iccDEV/issues/389", "source": "[email protected]", "tags": ["Issue Tracking", "Exploit", "Vendor Advisory"]}, {"url": "https://github.com/InternationalColorConsortium/iccDEV/pull/432", "source": "[email protected]", "tags": ["Issue Tracking", "Patch"]}, {"url": "https://github.com/InternationalColorConsortium/iccDEV/security/advisories/GHSA-v3q7-7hw6-6jq8", "source": "[email protected]", "tags": ["Vendor Advisory"]}]}}