CVE-2026-4434 | Devolutions Server up to 2026.0 TLS Certificate Verification certificate validation (DEVO-2026-0005)

VDB-352066 · CVE-2026-4434 · DEVO-2026-0005 DEVOLUTIONS SERVER UP TO 2026.0 TLS CERTIFICATE VERIFICATION CERTIFICATE VALIDATION HISTORYDIFFRELATEJSONXMLCTI CVSS Meta Temp Score Current Exploit Price (≈) CTI Interest Score 3.6 $0-$5k 1.96+ Summaryinfo A vulnerability categorized as critical has been discovered in Devolutions Server up to 2026.0. Affected by this vulnerability is an unknown functionality of the component TLS Certificate Verification. Executing a manipulation can lead to certificate validation. This vulnerability is handled as CVE-2026-4434. The attack can be executed remotely. There is not any exploit available. It is advisable to upgrade the affected component. Detailsinfo A vulnerability has been found in Devolutions Server up to 2026.0 and classified as problematic. This vulnerability affects an unknown functionality of the component TLS Certificate Verification. The manipulation with an unknown input leads to a certificate validation vulnerability. The CWE definition for the vulnerability is CWE-295. The product does not validate, or incorrectly validates, a certificate. As an impact it is known to affect integrity. CVE summarizes: Improper certificate validation in the PAM propagation WinRM connections allows a network attacker to perform a man-in-the-middle attack via disabled TLS certificate verification. The advisory is available at devolutions.net. This vulnerability was named CVE-2026-4434 since 03/19/2026. The exploitation appears to be difficult. The attack can be initiated remotely. No form of authentication is required for a successful exploitation. The technical details are unknown and an exploit is not available. This vulnerability is assigned to T1587.003 by the MITRE ATT&CK project. Upgrading to version 2026.1 eliminates this vulnerability. Productinfo Vendor Devolutions Name Server Version 2026 CPE 2.3info 🔒 CPE 2.2info 🔒 CVSSv4info VulDB Vector: 🔒 VulDB Reliability: 🔍 CVSSv3info VulDB Meta Base Score: 3.7 VulDB Meta Temp Score: 3.6 VulDB Base Score: 3.7 VulDB Temp Score: 3.6 VulDB Vector: 🔒 VulDB Reliability: 🔍 CVSSv2info Vector Complexity Authentication Confidentiality Integrity Availability Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock VulDB Base Score: 🔒 VulDB Temp Score: 🔒 VulDB Reliability: 🔍 Exploitinginfo Class: Certificate validation CWE: CWE-295 / CWE-287 CAPEC: 🔒 ATT&CK: 🔒 Physical: No Local: No Remote: Yes Availability: 🔒 Status: Not defined 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: Server 2026.1 Timelineinfo 03/19/2026 CVE reserved 03/20/2026 +1 days Advisory disclosed 03/20/2026 +0 days VulDB entry created 03/20/2026 +0 days VulDB entry last update Sourcesinfo Advisory: DEVO-2026-0005 Status: Confirmed CVE: CVE-2026-4434 (🔒) GCVE (CVE): GCVE-0-2026-4434 GCVE (VulDB): GCVE-100-352066 Entryinfo Created: 03/20/2026 14:58 Changes: 03/20/2026 14:58 (56) Complete: 🔍 Cache ID: 99:238:101 Discussion No comments yet. Languages: en. Please log in to comment. ◂ PreviousOverviewNext ▸