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CVE-2026-50003

OFFIS DCMTK Toolkit Path Traversal

9.3 CriticalFix available

A malicious or compromised server can make a DCMTK client using bit-preserving C-GET storage mode write files outside the chosen output directory, using both relative (../) paths and absolute paths.

Attack profile

How easy it is to exploit

Attack vector
Network
Complexity
Low
Privileges needed
None
User interaction
None

What an attacker can affect

Confidentiality
High
Integrity
High
Availability
High

Exploit likelihood

0.66%Up 0.2 points since Jul 1, 2026
90%50%10%1%

What each source reports

CVE List Score used 9.3

OFFIS DCMTK Toolkit Path Traversal

A malicious or compromised server can make a DCMTK client using bit-preserving C-GET storage mode write files outside the chosen output directory, using both relative (../) paths and absolute paths.

Record
CVE-2026-50003
CVSS 4.0
9.3 CriticalCVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N
CVSS 3.1
9.8 CriticalCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Weakness
CWE-22
Updated
2026-11-02
EUVDEUVD-2026-40422 9.3

A malicious or compromised server can make a DCMTK client using bit-preserving C-GET storage mode write files outside the chosen output directory, using both relative (../) paths and absolute paths.

Record
EUVD-2026-40422
CVSS 4.0
9.3 CriticalCVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N
Updated
2026-11-02
GitHub AdvisoriesGHSA-rmv2-5p78-8fvq 9.3

A malicious or compromised server can make a DCMTK client using bit-preserving C-GET storage mode...

A malicious or compromised server can make a DCMTK client using bit-preserving C-GET storage mode write files outside the chosen output directory, using both relative (../) paths and absolute paths.

Record
GHSA-rmv2-5p78-8fvq
CVSS 4.0
9.3 CriticalCVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
CVSS 3.1
9.8 CriticalCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Weakness
CWE-22
Updated
2026-11-02
NVD 9.3

A malicious or compromised server can make a DCMTK client using bit-preserving C-GET storage mode write files outside the chosen output directory, using both relative (../) paths and absolute paths.

Record
CVE-2026-50003
CVSS 4.0
9.3 CriticalCVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
CVSS 3.1
9.8 CriticalCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Weakness
CWE-22
Updated
2026-11-02
OSV 9.3

OFFIS DCMTK Toolkit Path Traversal

A malicious or compromised server can make a DCMTK client using bit-preserving C-GET storage mode write files outside the chosen output directory, using both relative (../) paths and absolute paths.

Record
CVE-2026-50003
CVSS 4.0
9.3 CriticalCVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N
Weakness
CWE-22
Updated
2026-11-02
OSVDEBIAN-CVE-2026-50003 9.3

A malicious or compromised server can make a DCMTK client using bit-preserving C-GET storage mode write files outside the chosen output directory, using both relative (../) paths and absolute paths.

Record
DEBIAN-CVE-2026-50003
CVSS 4.0
9.3 CriticalCVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
Updated
2026-11-02
OSVUBUNTU-CVE-2026-50003 9.3

A malicious or compromised server can make a DCMTK client using bit-preserving C-GET storage mode write files outside the chosen output directory, using both relative (../) paths and absolute paths.

Record
UBUNTU-CVE-2026-50003
CVSS 4.0
9.3 CriticalCVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N
CVSS 3.1
9.8 CriticalCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Updated
2026-11-02

Affected products

Affected packages

Affected packages
PackageAffectedFixed
dcmtk
Debian:12
 All versions, plus listed versions
3.6.7-113.6.7-123.6.7-133.6.7-143.6.7-15
Show 35 moreShow less
3.6.7-83.6.7-93.6.7-9.13.6.7-9~deb12u13.6.7-9~deb12u23.6.7-9~deb12u33.6.7-9~deb12u43.6.8-13.6.8-23.6.8-33.6.8-43.6.8-53.6.8-63.6.8-73.6.8~git20221024.b8950f9-13.6.8~git20221024.b8950f9-23.6.8~git20221024.b8950f9-33.6.8~git20231027.1549d8c-13.6.8~git20231027.1549d8c-23.6.9-13.6.9-23.6.9-33.6.9-43.6.9-53.6.9-63.7.0+really3.6.9-13.7.0+really3.7.0-0+exp13.7.0+really3.7.0-13.7.0+really3.7.0-23.7.0+really3.7.0-33.7.0+really3.7.0-43.7.0+really3.7.0-53.7.0+really3.7.0-63.7.0+really3.7.0-73.7.0-1
 None known
dcmtk
Debian:13
 before 3.6.9-5+deb13u3, plus listed versions
3.6.9-53.6.9-5+deb13u13.6.9-5+deb13u2
3.6.9-5+deb13u3
dcmtk
Debian:14
 before 3.7.0+really3.7.0-7, plus listed versions
3.6.9-53.6.9-63.7.0+really3.6.9-13.7.0+really3.7.0-0+exp13.7.0+really3.7.0-1
Show 6 moreShow less
3.7.0+really3.7.0-23.7.0+really3.7.0-33.7.0+really3.7.0-43.7.0+really3.7.0-53.7.0+really3.7.0-63.7.0-1
3.7.0+really3.7.0-7
dcmtk
Ubuntu:Pro:16.04:LTS
 All versions, plus listed versions
3.6.0-15.13.6.1~20150629-53.6.1~20150924-43.6.1~20150924-53.6.1~20150924-5ubuntu0.1~esm13.6.1~20150924-5ubuntu0.1~esm23.6.1~20150924-5ubuntu0.1~esm3
 None known
dcmtk
Ubuntu:Pro:18.04:LTS
 All versions, plus listed versions
3.6.2-23.6.2-2build13.6.2-33.6.2-3build13.6.2-3build2
Show 4 moreShow less
3.6.2-3build33.6.2-3ubuntu0.1~esm13.6.2-3ubuntu0.1~esm23.6.2-3ubuntu0.1~esm3
 None known
dcmtk
Ubuntu:Pro:20.04:LTS
 All versions, plus listed versions
3.6.4-2.13.6.4-2.1build13.6.4-2.1build23.6.4-2.1ubuntu0.1~esm13.6.4-2.1ubuntu0.13.6.4-2.1ubuntu0.1+esm13.6.4-2.1ubuntu0.23.6.4-2.1ubuntu0.2+esm1
 None known
dcmtk
Ubuntu:Pro:22.04:LTS
 All versions, plus listed versions
3.6.5-13.6.6-3ubuntu13.6.6-3ubuntu23.6.6-43.6.6-53.6.6-5ubuntu0.1~esm13.6.6-5ubuntu0.1~esm2
 None known
dcmtk
Ubuntu:Pro:24.04:LTS
 All versions, plus listed versions
3.6.7-93.6.7-9.1build23.6.7-9.1build33.6.7-9.1build43.6.7-9.1ubuntu0.1~esm1
 None known
dcmtk
Ubuntu:25.10
 All versions, plus listed versions
3.6.9-43.6.9-53.6.9-5build1
 None known
dcmtk
Ubuntu:26.10
 All versions, plus listed versions
3.7.0+really3.6.9-13.7.0+really3.7.0-23.7.0+really3.7.0-53.7.0+really3.7.0-63.7.0+really3.7.0-7ubuntu1
 None known
dcmtk
Ubuntu:26.04:LTS
 All versions, plus listed versions
3.6.9-5build13.6.9-63.7.0+really3.6.9-1
 None known

History

History
RecordedChangedSources
first indexedCVE List, EUVD, GitHub Advisories, NVD, OSV

Dates are when Every CVE recorded each change. Upstream dates may differ.

In short

CVE-2026-50003 is a critical vulnerability (CVSS 9.3) in Offis Dicom Dcmtk Toolkit, published June 30, 2026. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 0.66%, the 52nd percentile. Fixed in dcmtk 3.6.9-5+deb13u3.

References

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