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    CVE-2025-54804

    Russh is a Rust SSH client & server library. In versions 0.54.0 and below, the channel window adjust message of the SSH protocol is used to track the free space in the receive buffer of the other side of a channel. The current implementation takes the value from the message and adds it to an internal state value. This can result in a integer overflow. If the Rust code is compiled with overflow checks, it will panic. A malicious client can crash a server. This is fixed in version 0.54.1.

    Published:Aug 5, 2025
    Last Modified:Aug 13, 2025
    EPS:Aug 5, 2025
    EPSS Score:0.00054
    CVSS Score:6.5

    Affected Products

    Vendor
    Eugeny
    Product
    Russh
    Vendor
    Russh Project
    Product
    Russh
    Vendor
    Rust-lang
    Product
    Russh
    Vendor
    Warpgate Project
    Product
    Warpgate

    Exploits

    https://github.com/Eugeny/russh/security/advisories/GHSA-h5rc-j5f5-3gcmhttps://github.com/Eugeny/russh/security/advisories/GHSA-h5rc-j5f5-3gcm

    Common Weakness Enumeration

    CWE-190 Integer Overflow or Wraparound

    Common Attack Pattern Enumeration and Classification (CAPEC)

    CAPEC-92 Forced Integer Overflow

    Related CVEs

    CVE-2026-73489 (CVSS 4.3) — Russh is a Rust SSH client & server library. Prior to 0.62.4, an authenticated SSH client can cause a denial o…
    CVE-2026-73430 (CVSS 5.3) — Russh is a Rust SSH client & server library. Prior to 0.62.4, an unauthenticated SSH client can cause a denial…
    CVE-2026-73429 (CVSS 5.3) — Russh is a Rust SSH client & server library. Prior to 0.62.4, a malicious SSH server can crash a russh client …
    CVE-2026-68930 (CVSS 6.5) — Russh is a Rust SSH client & server library. Prior to 0.62.5, russh dispatches channel-scoped Handler callback…
    CVE-2026-48110 (CVSS 7.5) — Russh is a Rust SSH client & server library. From version 0.34.0 to before version 0.61.0, several russh clien…
    CVE-2026-48108 (CVSS 5.3) — Russh is a Rust SSH client & server library. From version 0.34.0-beta.1 to before version 0.61.0, russh did no…
    CVE-2026-48107 (CVSS 6.5) — Russh is a Rust SSH client & server library. From version 0.37.0 to before version 0.61.0, in the russh client…
    CVE-2026-46705 (CVSS 5.3) — Russh is a Rust SSH client & server library. From version 0.34.0-beta.1 to before version 0.61.0, the russh se…
    CVE-2026-46702 (CVSS 7.5) — Russh is a Rust SSH client & server library. From version 0.34.0 to before version 0.61.1, when SSH compressio…
    CVE-2026-46673 (CVSS 7.5) — Russh is a Rust SSH client & server library. Prior to version 0.60.3, CryptoVec used unchecked capacity growth…

    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