PatchTheCVECVE-2026-5441: An out-of-bounds read vulnerability exists in the `DecodePsmctRle1` function of `DicomImageDecoder.cpp`
CVE-2026-5441 is a high-severity flaw (CVSS 7.1) affecting orthanc. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.
An out-of-bounds read vulnerability exists in the `DecodePsmctRle1` function of `DicomImageDecoder.cpp`. The `PMSCT_RLE1` decompression routine, which decodes the proprietary Philips Compression format, does not properly validate escape markers placed near the end of the compressed data stream. A crafted sequence at the end of the buffer can cause the decoder to read beyond the allocated memory region and leak heap data into the rendered image ou
Why this priority
- High severity
A fixed release or distro patch exists.
Risk facts
| CVSS score | 7.1 (High) |
| Attack vector | Local |
| Attack complexity | Low |
| Privileges needed | None |
| User interaction | Required |
| EPSS exploit chance | 0.1% (top 97%) |
| CISA exploited list | No |
| Weakness | CWE-125 |
| Published | 2026-04-09 |
| Last modified | 2026-10-26 |
Last updated 2026-10-26 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score
Am I affected?
Timeline
- Published CVE record published
- Updated Record last modified
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.
Quick answers
How do I fix CVE-2026-5441?
orthanc: upgrade to 1.12.11. Exact commands for each OS are on this page.
Is CVE-2026-5441 being exploited?
CVE-2026-5441 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.
What does CVE-2026-5441 affect?
CVE-2026-5441 affects orthanc. Severity is high (CVSS 7.1). An out-of-bounds read vulnerability exists in the `DecodePsmctRle1` function of `DicomImageDecoder.cpp`. The `PMSCT_RLE1` decompression routine, which decodes the proprietary Philips Compression format, does not properly validate escape mar
How urgent is CVE-2026-5441?
Priority 26/100. High severity
Related CVEs
- CVE-2026-5442 CRITICAL 9.8 UPGRADE A heap buffer overflow vulnerability exists in the DICOM image decoder
- CVE-2026-5443 CRITICAL 9.8 UPGRADE A heap buffer overflow vulnerability exists during the decoding of `PALETTE COLOR` DICOM images
- CVE-2026-5445 CRITICAL 9.1 UPGRADE An out-of-bounds read vulnerability exists in the `DecodeLookupTable` function within `DicomImageDecoder.cpp`
- CVE-2026-5437 HIGH 7.5 UPGRADE An out-of-bounds read vulnerability exists in `DicomStreamReader` during DICOM meta-header parsing
- CVE-2026-5440 HIGH 7.5 UPGRADE A memory exhaustion vulnerability exists in the HTTP server due to unbounded use of the `Content-Length` heade