CVE-2026-5445 | Orthanc DICOM Server up to 1.12.10 Image Parser DicomImageDecoder.cpp DecodeLookupTable out-of-bounds

VDB-356596 · CVE-2026-5445 · GCVE-0-2026-5445 ORTHANC DICOM SERVER UP TO 1.12.10 IMAGE PARSER DICOMIMAGEDECODER.CPP DECODELOOKUPTABLE OUT-OF-BOUNDS HISTORYDIFFRELATEJSONXMLCTI CVSS Meta Temp Score Current Exploit Price (≈) CTI Interest Score 4.3 $0-$5k 0.98+ Summaryinfo A vulnerability, which was classified as problematic, was found in Orthanc DICOM Server up to 1.12.10. This impacts the function DecodeLookupTable of the file DicomImageDecoder.cpp of the component Image Parser. Executing a manipulation can lead to out-of-bounds. This vulnerability is handled as CVE-2026-5445. The attack can be executed remotely. There is not any exploit available. Detailsinfo A vulnerability was found in Orthanc DICOM Server up to 1.12.10. It has been declared as problematic. This vulnerability affects the function DecodeLookupTable of the file DicomImageDecoder.cpp of the component Image Parser. The manipulation with an unknown input leads to a out-of-bounds vulnerability. The CWE definition for the vulnerability is CWE-125. The product reads data past the end, or before the beginning, of the intended buffer. As an impact it is known to affect confidentiality. CVE summarizes: An out-of-bounds read vulnerability exists in the `DecodeLookupTable` function within `DicomImageDecoder.cpp`. The lookup-table decoding logic used for `PALETTE COLOR` images does not validate pixel indices against the lookup table size. Crafted images containing indices larger than the palette size cause the decoder to read beyond allocated lookup table memory and expose heap contents in the output image. This vulnerability was named CVE-2026-5445 since 04/02/2026. The exploitation appears to be easy. The attack can be initiated remotely. No form of authentication is required for a successful exploitation. Successful exploitation requires user interaction by the victim. There are known technical details, but no exploit is available. There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product. Productinfo Vendor Orthanc Name DICOM Server Version 1.12.0 1.12.1 1.12.2 1.12.3 1.12.4 1.12.5 1.12.6 1.12.7 1.12.8 1.12.9 1.12.10 CPE 2.3info 🔒 🔒 🔒 CPE 2.2info 🔒 🔒 🔒 CVSSv4info VulDB Vector: 🔒 VulDB Reliability: 🔍 CVSSv3info VulDB Meta Base Score: 4.3 VulDB Meta Temp Score: 4.3 VulDB Base Score: 4.3 VulDB Temp Score: 4.3 VulDB Vector: 🔒 VulDB Reliability: 🔍 CVSSv2info Vector Complexity Authentication Confidentiality Integrity Availability Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock VulDB Base Score: 🔒 VulDB Temp Score: 🔒 VulDB Reliability: 🔍 Exploitinginfo Class: Out-of-bounds CWE: CWE-125 / CWE-119 CAPEC: 🔒 ATT&CK: 🔒 Physical: No Local: No Remote: Yes Availability: 🔒 Status: Not defined Price Prediction: 🔍 Current Price Estimation: 🔒 0-Day Unlock Unlock Unlock Unlock Today Unlock Unlock Unlock Unlock Threat Intelligenceinfo Interest: 🔍 Active Actors: 🔍 Active APT Groups: 🔍 Countermeasuresinfo Recommended: no mitigation known Status: 🔍 0-Day Time: 🔒 Timelineinfo 04/02/2026 CVE reserved 04/09/2026 +7 days Advisory disclosed 04/09/2026 +0 days VulDB entry created 04/09/2026 +0 days VulDB entry last update Sourcesinfo Status: Not defined CVE: CVE-2026-5445 (🔒) GCVE (CVE): GCVE-0-2026-5445 GCVE (VulDB): GCVE-100-356596 Entryinfo Created: 04/09/2026 17:41 Changes: 04/09/2026 17:41 (54) Complete: 🔍 Cache ID: 99:97E:101 Discussion No comments yet. Languages: en. Please log in to comment. ◂ PreviousOverviewNext ▸