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    CVE-2026-3564

    A condition in the ScreenConnect server component may allow an actor with access to server-level cryptographic material used for authentication to obtain unauthorized access, including elevated privileges, in certain scenarios. ScreenConnect host and guest client agents are not independently affected by this CVE.

    Published:Mar 17, 2026
    Last Modified:Jul 9, 2026
    EPS:Mar 17, 2026
    EPSS Score:0.00362
    CVSS Score:9

    Affected Products

    Vendor
    Connectwise
    Product
    Screenconnect

    Exploits

    No exploit reference

    Common Attack Pattern Enumeration and Classification (CAPEC)

    CAPEC-463 Padding Oracle Crypto Attack
    CAPEC-475 Signature Spoofing by Improper Validation

    Related CVEs

    CVE-2026-11596 (CVSS 4.7) — In ScreenConnect™ versions prior to 26.2, input validation within the Host Pass creation functionality could a…
    CVE-2025-14823 (CVSS 5.3) — In deployments using the ScreenConnect™ Certificate Signing Extension, encrypted configuration values includin…
    CVE-2025-14265 (CVSS 9.1) — In versions of ScreenConnect™ prior to 25.8, server-side validation and integrity checks within the extension …
    CVE-2025-3935 (CVSS 8.1) — ScreenConnect versions 25.2.3 and earlier versions may be susceptible to a ViewState code injection attack. AS…
    CVE-2024-1709 (CVSS 10) — ConnectWise ScreenConnect 23.9.7 and prior are affected by an Authentication Bypass Using an Alternate Path or…
    CVE-2024-1708 (CVSS 8.4) — ConnectWise ScreenConnect 23.9.7 and prior are affected by path-traversal vulnerability, which may allow an at…
    CVE-2023-47256 (CVSS 5.5) — ConnectWise ScreenConnect through 23.8.4 allows local users to connect to arbitrary relay servers via implicit…
    CVE-2023-47257 (CVSS 8.1) — ConnectWise ScreenConnect through 23.8.4 allows man-in-the-middle attackers to achieve remote code execution v…
    CVE-2022-36781 (CVSS 5.3) — ConnectWise ScreenConnect versions 22.6 and below contained a flaw allowing potential brute force attacks on c…

    Common Vulnerability Scoring System

    Attack Vector
    Network
    Adjacent
    Local
    Physical
    Privileges Required
    None
    Low
    High
    User Interaction
    None
    Required
    Scope
    Unchanged
    Changed
    Confidentiality
    None
    Low
    High
    Integrity
    None
    Low
    High
    Availability
    None
    Low
    High