CVE-2026-5437— Out-of-Bounds Read in DicomStreamReader
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I. Basic Information for CVE-2026-5437
Vulnerability Information
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Vulnerability Title
Out-of-Bounds Read in DicomStreamReader
Source: NVD (National Vulnerability Database)
Vulnerability Description
An out-of-bounds read vulnerability exists in `DicomStreamReader` during DICOM meta-header parsing. When processing malformed metadata structures, the parser may read beyond the bounds of the allocated metadata buffer. Although this issue does not typically crash the server or expose data directly to the attacker, it reflects insufficient input validation in the parsing logic.
Source: NVD (National Vulnerability Database)
CVSS Information
N/A
Source: NVD (National Vulnerability Database)
Vulnerability Type
N/A
Source: NVD (National Vulnerability Database)
Vulnerability Title
Orthanc 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Orthanc是Orthanc公司的一款免费的开源软件。 Orthanc存在安全漏洞，该漏洞源于DicomStreamReader在解析DICOM元标头时存在越界读取，可能导致解析器读取超出分配的元数据缓冲区边界。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)
Affected Products
| Vendor | Product | Affected Versions | CPE | Subscribe |
|---|---|---|---|---|
| Orthanc | DICOM Server | 0 ~ 1.12.10 | - |
II. Public POCs for CVE-2026-5437
| # | POC Description | Source Link | Shenlong Link |
|---|
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Same Patch Batch · Orthanc · 2026-04-09 · 9 CVEs total
| CVE-2026-5444 | Heap Buffer Overflow in PAM Image Buffer Allocation | |
| CVE-2026-5442 | Heap Buffer Overflow in DICOM Image Decoder via VR UL Dimensions | |
| CVE-2026-5441 | Out-of-Bounds Read in DicomImageDecoder (PMSCT_RLE1 Decompression) | |
| CVE-2026-5445 | Out-of-Bounds Read in DicomImageDecoder (DecodeLookupTable) | |
| CVE-2026-5440 | Memory Exhaustion via Unbounded Content-Length | |
| CVE-2026-5443 | Heap Buffer Overflow in DICOM Image Decoder (Palette Color Decode) | |
| CVE-2026-5438 | Gzip Decompression Bomb via Content-Encoding Header | |
| CVE-2026-5439 | Memory Exhaustion via Forged ZIP Metadata |
IV. Related Vulnerabilities
Same product: DICOM Server
- CVE-2026-5439
Memory Exhaustion via Forged ZIP Metadata - CVE-2026-5438
Gzip Decompression Bomb via Content-Encoding Header - CVE-2026-5440
Memory Exhaustion via Unbounded Content-Length - CVE-2026-5442
Heap Buffer Overflow in DICOM Image Decoder via VR UL Dimens - CVE-2026-5443
Heap Buffer Overflow in DICOM Image Decoder (Palette Color D
Same vendor: Orthanc
- CVE-2026-5439
Memory Exhaustion via Forged ZIP Metadata - CVE-2026-5438
Gzip Decompression Bomb via Content-Encoding Header - CVE-2026-5440
Memory Exhaustion via Unbounded Content-Length - CVE-2026-5442
Heap Buffer Overflow in DICOM Image Decoder via VR UL Dimens - CVE-2026-5443
Heap Buffer Overflow in DICOM Image Decoder (Palette Color D
V. Comments for CVE-2026-5437
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