CVE-2026-5443 | Orthanc DICOM Server up to 1.12.10 DICOM Image Parser integer overflow

VDB-356595 · CVE-2026-5443 · GCVE-0-2026-5443 ORTHANC DICOM SERVER UP TO 1.12.10 DICOM IMAGE PARSER INTEGER OVERFLOW HISTORYDIFFRELATEJSONXMLCTI CVSS Meta Temp Score Current Exploit Price (≈) CTI Interest Score 6.3 $0-$5k 0.98+ Summaryinfo A vulnerability, which was classified as critical, has been found in Orthanc DICOM Server up to 1.12.10. This affects an unknown function of the component DICOM Image Parser. Performing a manipulation results in integer overflow. This vulnerability is known as CVE-2026-5443. Remote exploitation of the attack is possible. No exploit is available. Detailsinfo A vulnerability was found in Orthanc DICOM Server up to 1.12.10. It has been classified as critical. This affects an unknown functionality of the component DICOM Image Parser. The manipulation with an unknown input leads to a integer overflow vulnerability. CWE is classifying the issue as CWE-190. The product performs a calculation that can produce an integer overflow or wraparound, when the logic assumes that the resulting value will always be larger than the original value. This can introduce other weaknesses when the calculation is used for resource management or execution control. This is going to have an impact on confidentiality, integrity, and availability. The summary by CVE is: A heap buffer overflow vulnerability exists during the decoding of `PALETTE COLOR` DICOM images. Pixel length validation uses 32-bit multiplication for width and height calculations. If these values overflow, the validation check incorrectly succeeds, allowing the decoder to read and write to memory beyond allocated buffers. This vulnerability is uniquely identified as CVE-2026-5443 since 04/02/2026. The exploitability is told to be easy. It is possible to initiate the attack remotely. No form of authentication is needed for exploitation. It demands that the victim is doing some kind of user interaction. The technical details are unknown and an exploit is not publicly available. The pricing for an exploit might be around USD $0-$5k at the moment (estimation calculated on 04/09/2026). 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: 6.3 VulDB Meta Temp Score: 6.3 VulDB Base Score: 6.3 VulDB Temp Score: 6.3 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: Integer overflow CWE: CWE-190 / CWE-189 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-2026-5443 (🔒) GCVE (CVE): GCVE-0-2026-5443 GCVE (VulDB): GCVE-100-356595 Entryinfo Created: 04/09/2026 17:41 Changes: 04/09/2026 17:41 (51) Complete: 🔍 Cache ID: 99:FB7:101 Discussion No comments yet. Languages: en. Please log in to comment. ◂ PreviousOverviewNext ▸