Vulnerability database
Every flaw the U.S. government’s cybersecurity agency (CISA) has confirmed attackers are using, plus the new WordPress plugin and theme bugs published each day, sorted by what they mean for a small business. We refresh it twice a day. If you see something your website or office runs, tell us.
13 results
Sep 11, 2026An integer overflow in a specified pitch and buffer-size computation leads to a heap out-of-bounds write when Orthanc DICOM Server decodes an attacker-supplied CVE-2026-87020 · Other software · Orthanc · reported by ics-cert@hq.dhs.govHigh 7.2
An integer overflow in a specified pitch and buffer-size computation leads to a heap out-of-bounds write when Orthanc DICOM Server decodes an attacker-supplied PNG.
- Product
- DICOM Server
- What to do
- Apply the vendor’s update. The NVD record links to the advisory.
Full record and what to do →NVD recordgithub.comorthanc.uclouvain.be
Jun 1, 2026A security flaw has been discovered in Orthanc DICOM Server up to 1.12.11.CVE-2026-10528 · Other software · Orthanc · reported by VulDBLow 1.9
A security flaw has been discovered in Orthanc DICOM Server up to 1.12.11. This issue affects the function DcmItem::read of the file OrthancFramework/Sources/DicomParsing/FromDcmtkBridge.cpp of the component DCMTK Parser. Performing a manipulation results in stack-based buffer overflow. Attacking locally is a requirement. The exploit has been released to the public and may be used for attacks. The patch is named bae99026ca97. To fix this issue, it is recommended to deploy a patch.
- Product
- DICOM Server
- What to do
- Apply the vendor’s update. The NVD record links to the advisory.
Full record and what to do →NVD recordorthanc.uclouvain.beorthanc.uclouvain.be
Apr 9, 2026An out-of-bounds read vulnerability exists in the `DecodeLookupTable` function within `DicomImageDecoder.cpp`.CVE-2026-5445 · Other software · Orthanc · reported by cret@cert.orgCritical 9.1
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.
- Product
- DICOM Server
- What to do
- Apply the vendor’s update. The NVD record links to the advisory.
Full record and what to do →NVD recordkb.cert.orgmachinespirits.de
Apr 9, 2026A heap buffer overflow vulnerability exists in the PAM image parsing logic.CVE-2026-5444 · Other software · Orthanc · reported by cret@cert.orgHigh 7.1
A heap buffer overflow vulnerability exists in the PAM image parsing logic. When Orthanc processes a crafted PAM image embedded in a DICOM file, image dimensions are multiplied using 32-bit unsigned arithmetic. Specially chosen values can cause an integer overflow during buffer size calculation, resulting in the allocation of a small buffer followed by a much larger write operation during pixel processing.
- Product
- DICOM Server
- What to do
- Apply the vendor’s update. The NVD record links to the advisory.
Full record and what to do →NVD recordkb.cert.orgmachinespirits.de
Apr 9, 2026A heap buffer overflow vulnerability exists during the decoding of `PALETTE COLOR` DICOM images.CVE-2026-5443 · Other software · Orthanc · reported by cret@cert.orgCritical 9.8
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.
- Product
- DICOM Server
- What to do
- Apply the vendor’s update. The NVD record links to the advisory.
Full record and what to do →NVD recordkb.cert.orgmachinespirits.de
Apr 9, 2026A heap buffer overflow vulnerability exists in the DICOM image decoder.CVE-2026-5442 · Other software · Orthanc · reported by cret@cert.orgCritical 9.8
A heap buffer overflow vulnerability exists in the DICOM image decoder. Dimension fields are encoded using Value Representation (VR) Unsigned Long (UL), instead of the expected VR Unsigned Short (US), which allows extremely large dimensions to be processed. This causes an integer overflow during frame size calculation and results in out-of-bounds memory access during image decoding.
- Product
- DICOM Server
- What to do
- Apply the vendor’s update. The NVD record links to the advisory.
Full record and what to do →NVD recordkb.cert.orgmachinespirits.de
Apr 9, 2026An out-of-bounds read vulnerability exists in the `DecodePsmctRle1` function of `DicomImageDecoder.cpp`.CVE-2026-5441 · Other software · Orthanc · reported by cret@cert.orgHigh 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 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 output.
- Product
- DICOM Server
- What to do
- Apply the vendor’s update. The NVD record links to the advisory.
Full record and what to do →NVD recordkb.cert.orgmachinespirits.de
Apr 9, 2026A memory exhaustion vulnerability exists in the HTTP server due to unbounded use of the `Content-Length` header.CVE-2026-5440 · Other software · Orthanc · reported by cret@cert.orgHigh 7.5
A memory exhaustion vulnerability exists in the HTTP server due to unbounded use of the `Content-Length` header. The server allocates memory directly based on the attacker supplied header value without enforcing an upper limit. A crafted HTTP request containing an extremely large `Content-Length` value can trigger excessive memory allocation and server termination, even without sending a request body.
- Product
- DICOM Server
- What to do
- Apply the vendor’s update. The NVD record links to the advisory.
Full record and what to do →NVD recordkb.cert.orgmachinespirits.de
Apr 9, 2026A memory exhaustion vulnerability exists in ZIP archive processing.CVE-2026-5439 · Other software · Orthanc · reported by cret@cert.orgHigh 7.5
A memory exhaustion vulnerability exists in ZIP archive processing. Orthanc automatically extracts ZIP archives uploaded to certain endpoints and trusts metadata fields describing the uncompressed size of archived files. An attacker can craft a small ZIP archive containing a forged size value, causing the server to allocate extremely large buffers during extraction.
- Product
- DICOM Server
- What to do
- Apply the vendor’s update. The NVD record links to the advisory.
Full record and what to do →NVD recordkb.cert.orgmachinespirits.de
Apr 9, 2026A gzip decompression bomb vulnerability exists when Orthanc processes HTTP request with `Content-Encoding: gzip`.CVE-2026-5438 · Other software · Orthanc · reported by cret@cert.orgHigh 7.5
A gzip decompression bomb vulnerability exists when Orthanc processes HTTP request with `Content-Encoding: gzip`. The server does not enforce limits on decompressed size and allocates memory based on attacker-controlled compression metadata. A specially crafted gzip payload can trigger excessive memory allocation and exhaust system memory.
- Product
- DICOM Server
- What to do
- Apply the vendor’s update. The NVD record links to the advisory.
Full record and what to do →NVD recordkb.cert.orgmachinespirits.de
Apr 9, 2026An out-of-bounds read vulnerability exists in `DicomStreamReader` during DICOM meta-header parsing.CVE-2026-5437 · Other software · Orthanc · reported by cret@cert.orgHigh 7.5
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.
- Product
- DICOM Server
- What to do
- Apply the vendor’s update. The NVD record links to the advisory.
Full record and what to do →NVD recordkb.cert.orgmachinespirits.de
Feb 5, 2026Rubo DICOM Viewer 2.0 contains a buffer overflow vulnerability in the DICOM server name input field that allows attackers to overwrite Structured Exception HandCVE-2020-37120 · Other software · Rubo Medical Imaging · reported by VulnCheckHigh 8.4
Rubo DICOM Viewer 2.0 contains a buffer overflow vulnerability in the DICOM server name input field that allows attackers to overwrite Structured Exception Handler (SEH). Attackers can craft a malicious text file with carefully constructed payload to execute arbitrary code by overwriting SEH and triggering remote code execution.
- Product
- Rubo DICOM Viewer
- What to do
- Apply the vendor’s update. The NVD record links to the advisory.
Full record and what to do →NVD recordweb.archive.orgexploit-db.com
Mar 31, 2021CONQUEST DICOM SERVER before 1.5.0 has a code execution vulnerability which can be exploited by attackers to execute malicious code.CVE-2020-35308 · Other software · Conquest Dicom Server Project · reported by MITRECritical 9.8
CONQUEST DICOM SERVER before 1.5.0 has a code execution vulnerability which can be exploited by attackers to execute malicious code.
- Product
- Conquest Dicom Server
- What to do
- Apply the vendor’s update. The NVD record links to the advisory.
Full record and what to do →NVD recordcnvd.org.cncnvd.org.cn
Where this comes from: the exploited list is CISA’s Known Exploited Vulnerabilities catalog. Everything else is the whole National Vulnerability Database, where each record is published by the team that found the bug (Wordfence, Patchstack, WPScan, the vendors themselves and others); we show who. Exploit odds are FIRST’s EPSS, updated daily. Titles and categories are ours, so check the linked record before acting on a detail. For a write-up of the big ones, see our advisories. Every vendor, and every WordPress plugin and theme with a recorded flaw, also has its own page. All of it is free to reuse as JSON, CSV or RSS.
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