VDB-346107 · CVE-2026-2516 · Submit #346107

Unidocs ezPDF DRM Reader/ezPDF Reader 2.0/3.0.0.4 SHFOLDER.dll uncontrolled search path

CVSS Meta Temp Score CVSS is a standardized scoring system to determine possibilities of attacks. The Temp Score considers temporal factors like disclosure, exploit and countermeasures. The unique Meta Score calculates the average score of different sources to provide a normalized scoring system.	Current Exploit Price (≈) Our analysts are monitoring exploit markets and are in contact with vulnerability brokers. The range indicates the observed or calculated exploit price to be seen on exploit markets. A good indicator to understand the monetary effort required for and the popularity of an attack.	CTI Interest Score Our Cyber Threat Intelligence team is monitoring different web sites, mailing lists, exploit markets and social media networks. The CTI Interest Score identifies the interest of attackers and the security community for this specific vulnerability in real-time. A high score indicates an elevated risk to be targeted for this vulnerability.
6.6	$0-$5k	0.19

Summaryinfo

A vulnerability classified as problematic has been found in Unidocs ezPDF DRM Reader and ezPDF Reader 2.0/3.0.0.4. This vulnerability affects unknown code in the library SHFOLDER.dll. Performing a manipulation results in uncontrolled search path. This vulnerability is reported as CVE-2026-2516. The attack requires a local approach. Moreover, an exploit is present. It is recommended to upgrade the affected component. 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."

Detailsinfo

A vulnerability, which was classified as critical, was found in Unidocs ezPDF DRM Reader and ezPDF Reader 2.0/3.0.0.4 (Document Management Software). This affects some unknown processing in the library SHFOLDER.dll. The manipulation with an unknown input leads to a uncontrolled search path vulnerability. CWE is classifying the issue as CWE-427. The product uses a fixed or controlled search path to find resources, but one or more locations in that path can be under the control of unintended actors. This is going to have an impact on confidentiality, integrity, and availability.

It is possible to read the advisory at gofile.me. This vulnerability is uniquely identified as CVE-2026-2516. The exploitability is told to be difficult. Attacking locally is a requirement. Technical details and a public exploit are known. The attack technique deployed by this issue is T1574 according to MITRE ATT&CK.

The exploit is shared for download at gofile.me. It is declared as proof-of-concept. 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."

Upgrading eliminates this vulnerability. The upgrade is hosted for download at unidocs.com.

The vulnerability is also documented in the vulnerability database at EUVD (EUVD-2026-5829). Statistical analysis made it clear that VulDB provides the best quality for vulnerability data.

Affected

Unidocs ezPDF Reader 2.0
Unidocs ezPDF DRM Reader 3.0.0.4 32-bit

Productinfo

Type

Document Management Software

Vendor

Unidocs

Name

Version

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔒
VulDB Reliability: 🔍

CNA CVSS-B Score: 🔒
CNA CVSS-BT Score: 🔒
CNA Vector: 🔒

CVSSv3info

VulDB Meta Base Score: 7.0
VulDB Meta Temp Score: 6.6

VulDB Base Score: 7.0
VulDB Temp Score: 6.3
VulDB Vector: 🔒
VulDB Reliability: 🔍

CNA Base Score: 7.0
CNA Vector: 🔒

CVSSv2info

AV	AC	Au	C	I	A
💳	💳	💳	💳	💳	💳
💳	💳	💳	💳	💳	💳
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Vector	Complexity	Authentication	Confidentiality	Integrity	Availability
Unlock	Unlock	Unlock	Unlock	Unlock	Unlock
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Unlock	Unlock	Unlock	Unlock	Unlock	Unlock

VulDB Base Score: 🔒
VulDB Temp Score: 🔒
VulDB Reliability: 🔍

Exploitinginfo

Class: Uncontrolled search path
CWE: CWE-427 / CWE-426
CAPEC: 🔒
ATT&CK: 🔒

Physical: Partially
Local: Yes
Remote: No

Availability: 🔒
Access: Public
Status: Proof-of-Concept
Download: 🔒

EPSS Score: 🔒
EPSS Percentile: 🔒

Price Prediction: 🔍
Current Price Estimation: 🔒

0-Day	Unlock	Unlock	Unlock	Unlock
Today	Unlock	Unlock	Unlock	Unlock

Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔒

Upgrade: unidocs.com

Timelineinfo

02/14/2026 Advisory disclosed
02/14/2026 +0 days VulDB entry created
04/13/2026 +58 days VulDB entry last update

Sourcesinfo

Advisory: gofile.me
Status: Confirmed

CVE: CVE-2026-2516 (🔒)
GCVE (CVE): GCVE-0-2026-2516
GCVE (VulDB): GCVE-100-346107
EUVD: 🔒
scip Labs: https://www.scip.ch/en/?labs.20161013

Entryinfo

Created: 02/14/2026 20:47
Updated: 04/13/2026 08:47
Changes: 02/14/2026 20:47 (57), 02/15/2026 16:14 (30), 02/19/2026 16:00 (1), 02/19/2026 22:17 (1), 04/13/2026 08:47 (12)
Complete: 🔍
Submitter: RoyalSnek
Cache ID: 216::103

Submitinfo

Accepted

Submit #736172: Unidocs Inc. ezPDF DRM Reader / ezPDF Reader v3.0.0.4 / v2.0 Uncontrolled Search Path (by RoyalSnek)

Statistical analysis made it clear that VulDB provides the best quality for vulnerability data.