High severity · published Jun 29, 2023
CVE-2023-33466
Orthanc before 1.12.0 allows authenticated users with access to the Orthanc API to overwrite arbitrary files on the file system, and in specific deployment scenarios allows the…
8.8
CVSS
4.2%
EPSS
No
On KEV
Description
Orthanc before 1.12.0 allows authenticated users with access to the Orthanc API to overwrite arbitrary files on the file system, and in specific deployment scenarios allows the attacker to overwrite the configuration, which can be exploited to trigger Remote Code Execution (RCE).
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Attack vector
Network
Complexity
Low
Privileges
Low
User interaction
None
Confidentiality
High
Integrity
High
Availability
High
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)4.2% · higher than 91% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
OR
Orthanc · Orthanc-server
before 1.12.0 · source: NVD
Affected product
OR
Orthanc
Orthanc-server
More from Orthanc
9.8
CVE-2026-5442
Heap Buffer Overflow in DICOM Image Decoder via VR UL Dimensions
9.8
CVE-2026-5443
Heap Buffer Overflow in DICOM Image Decoder (Palette Color Decode)
9.8
CVE-2025-0896
Orthanc server prior to version 1.5.8 does not enable basic authentication by default when remote access is enabled
9.1
CVE-2026-5445
Out-of-Bounds Read in DicomImageDecoder (DecodeLookupTable)
7.5
CVE-2026-5439
Memory Exhaustion via Forged ZIP Metadata