Vulnerability · Published Jun 30, 2026 · Assigned by icscert
CVE-2026-35505OFFIS DCMTK Toolkit Missing Release of Memory after Effective Lifetime
High 7.5
In plain English
A high-severity memory leak in DCMTK Toolkit from OFFIS DICOM. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.6% (higher than 51% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.
Severity (CVSS 3.1)7.5High
Exploit odds (30 days)0.6%top 48.8% of all CVEs
Exploited in the wildNo reportsCISA SSVC: none
Attack toolingNoneno public tooling known
Official description
An unauthenticated remote attacker can repeatedly send crafted connection requests to leak memory. In single-process deployments the memory grows until the service is killed and the port stops responding until restart.
Affected packages & fixed versions
| Ecosystem | Package | Fixed in | Advisory |
|---|---|---|---|
| Debian:12 | dcmtk | no fix listed | DEBIAN-CVE-2026-35505 |
| Debian:13 | dcmtk | 3.6.9-5+deb13u3 | DEBIAN-CVE-2026-35505 |
| Debian:14 | dcmtk | 3.7.0+really3.7.0-7 | DEBIAN-CVE-2026-35505 |
| Ubuntu:25.10 | dcmtk | no fix listed | UBUNTU-CVE-2026-35505 |
| Ubuntu:26.04:LTS | dcmtk | no fix listed | UBUNTU-CVE-2026-35505 |
| Ubuntu:26.10 | dcmtk | no fix listed | UBUNTU-CVE-2026-35505 |
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| OFFIS DICOM | DCMTK Toolkit | 0 – through 3.7.0 |
Weakness: CWE-401 · Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N