Unidocs ezPDF DRM Reader/ezPDF Reader SHFOLDER.dll uncontrolled search path

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Summary

CVECVE-2026-2516
StatePUBLISHED
AssignerVulDB
Source PriorityCVE Program / NVD first with legacy fallback
Published2026-02-15 13:16:16 UTC
Updated2026-04-13 07:16:45 UTC
DescriptionA vulnerability was identified in Unidocs ezPDF DRM Reader and ezPDF Reader 2.0/3.0.0.4. This affects an unknown part in the library SHFOLDER.dll. Such manipulation leads to uncontrolled search path. The attack needs to be performed locally. Attacks of this nature are highly complex. It is indicated that the exploitability is difficult. The exploit is publicly available and might be used. Upgrading the affected component is recommended. The vendor explains: "[W]e have already addressed similar DLL search path vulnerability patterns through prior security updates. (...) Users are advised to use the latest version provided by the vendor."

Risk And Classification

Primary CVSS: v4.0 7.3 HIGH from [email protected]

CVSS:4.0/AV:L/AC:H/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:P/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

EPSS: 0.000140000 probability, percentile 0.023870000 (date 2026-04-15)

Problem Types: CWE-426 | CWE-427 | CWE-427 Uncontrolled Search Path | CWE-426 Untrusted Search Path

VersionSourceTypeScoreSeverityVector
4.0[email protected]Secondary7.3HIGHCVSS:4.0/AV:L/AC:H/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:P/C...
4.0CNADECLARED7.3HIGHCVSS:4.0/AV:L/AC:H/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:P
3.1[email protected]Secondary7HIGHCVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H
3.1CNADECLARED7HIGHCVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H/E:P/RL:O/RC:C
3.0CNADECLARED7HIGHCVSS:3.0/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H/E:P/RL:O/RC:C
2.0[email protected]Secondary6AV:L/AC:H/Au:S/C:C/I:C/A:C
2.0CNADECLARED6AV:L/AC:H/Au:S/C:C/I:C/A:C/E:POC/RL:OF/RC:C

CVSS v4.0 Breakdown

Attack Vector
Local
Attack Complexity
High
Attack Requirements
None
Privileges Required
Low
User Interaction
None
Confidentiality
High
Integrity
High
Availability
High
Sub Conf.
None
Sub Integrity
None
Sub Availability
None

CVSS:4.0/AV:L/AC:H/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:P/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 v3.1 Breakdown

Attack Vector
Local
Attack Complexity
High
Privileges Required
Low
User Interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
High
Availability
High

CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H

CVSS v3.0 Breakdown

Attack Vector
Local
Attack Complexity
High
Privileges Required
Low
User Interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
High
Availability
High

CVSS:3.0/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H/E:P/RL:O/RC:C

Vendor Declared Affected Products

SourceVendorProductVersionPlatforms
CNA Unidocs EzPDF DRM Reader affected 2.0 Not specified
CNA Unidocs EzPDF DRM Reader affected 3.0.0.4 Not specified
CNA Unidocs EzPDF Reader affected 2.0 Not specified
CNA Unidocs EzPDF Reader affected 3.0.0.4 Not specified

References

ReferenceSourceLinkTags
vuldb.com/vuln/346107 [email protected] vuldb.com
vuldb.com/submit/736172 [email protected] vuldb.com
gofile.me/7bU54/ZG47Lh7Yx [email protected] gofile.me
www.unidocs.com/programs/ezPDF_DRM_Reader [email protected] www.unidocs.com
vuldb.com/vuln/346107/cti [email protected] vuldb.com
CVE Program record CVE.ORG www.cve.org canonical
NVD vulnerability detail NVD nvd.nist.gov canonical, analysis

Vendor Comments And Credit

Discovery Credit

CNA: RoyalSnek (VulDB User) (en)

CNA: VulDB CNA Team (en)

Additional Advisory Data

SourceTimeEvent
CNA2026-02-14T00:00:00.000ZAdvisory disclosed
CNA2026-02-14T01:00:00.000ZVulDB entry created
CNA2026-04-13T08:47:28.000ZVulDB entry last update
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