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    CVE-2025-27090

    Sliver is an open source cross-platform adversary emulation/red team framework, it can be used by organizations of all sizes to perform security testing. The reverse port forwarding in sliver teamserver allows the implant to open a reverse tunnel on the sliver teamserver without verifying if the operator instructed the implant to do so. The only impact that has been shown is the exposure of the server's IP address to a third party. This issue has been addressed in version 1.5.43 and all users are advised to upgrade. There are no known workarounds for this vulnerability.

    Published:Feb 19, 2025
    Last Modified:Feb 27, 2025
    EPS:Feb 19, 2025
    EPSS Score:0.00199
    CVSS Score:5.3

    Affected Products

    Vendor
    Bishopfox
    Product
    Sliver

    Exploits

    https://github.com/BishopFox/sliver/security/advisories/GHSA-fh4v-v779-4g2w

    Common Attack Pattern Enumeration and Classification (CAPEC)

    CAPEC-664 Server Side Request Forgery

    Related CVEs

    CVE-2026-34227 (CVSS 5.9) — Sliver is a command and control framework that uses a custom Wireguard netstack. Prior to version 1.7.4, a sin…
    CVE-2026-32941 (CVSS 5.7) — Sliver is a command and control framework that uses a custom Wireguard netstack. Versions 1.7.3 and below cont…
    CVE-2026-29781 (CVSS 2.1) — Sliver is a command and control framework that uses a custom Wireguard netstack. In versions from 1.7.3 and pr…
    CVE-2026-25791 (CVSS 7.5) — Sliver is a command and control framework that uses a custom Wireguard netstack. Prior to 1.7.0, the DNS C2 li…
    CVE-2026-25760 (CVSS 6.5) — Sliver is a command and control framework that uses a custom Wireguard netstack. Prior to 1.6.11, a path trave…
    CVE-2025-27093 (CVSS 6.3) — Sliver is a command and control framework that uses a custom Wireguard netstack. In versions 1.5.43 and earlie…
    CVE-2024-41111 (CVSS 7.2) — Sliver is an open source cross-platform adversary emulation/red team framework, it can be used by organization…
    CVE-2023-34758 (CVSS 8.1) — Sliver from v1.5.x to v1.5.39 has an improper cryptographic implementation, which allows attackers to execute …

    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