6.5
MEDIUM
CVE-2025-54804
Russh SSH Integer Overflow Vulnerability
Description

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.

INFO

Published Date :

Aug. 5, 2025, 1:15 a.m.

Last Modified :

Aug. 5, 2025, 3:15 p.m.

Remotely Exploitable :

Yes !

Impact Score :

3.6

Exploitability Score :

2.8
Affected Products

The following products are affected by CVE-2025-54804 vulnerability. Even if cvefeed.io is aware of the exact versions of the products that are affected, the information is not represented in the table below.

ID Vendor Product Action
1 Russh_project russh
References to Advisories, Solutions, and Tools

Here, you will find a curated list of external links that provide in-depth information, practical solutions, and valuable tools related to CVE-2025-54804.

URL Resource
https://github.com/Eugeny/russh/commit/0eb5e406780890e21ff71dd25d731b30676478e5
https://github.com/Eugeny/russh/security/advisories/GHSA-h5rc-j5f5-3gcm
https://github.com/Eugeny/russh/security/advisories/GHSA-h5rc-j5f5-3gcm

We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).

Results are limited to the first 15 repositories due to potential performance issues.

The following list is the news that have been mention CVE-2025-54804 vulnerability anywhere in the article.

The following table lists the changes that have been made to the CVE-2025-54804 vulnerability over time.

Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.

  • CVE Modified by 134c704f-9b21-4f2e-91b3-4a467353bcc0

    Aug. 05, 2025

    Action Type Old Value New Value
    Added Reference https://github.com/Eugeny/russh/security/advisories/GHSA-h5rc-j5f5-3gcm
  • New CVE Received by [email protected]

    Aug. 05, 2025

    Action Type Old Value New Value
    Added Description 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.
    Added CVSS V3.1 AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
    Added CWE CWE-190
    Added Reference https://github.com/Eugeny/russh/commit/0eb5e406780890e21ff71dd25d731b30676478e5
    Added Reference https://github.com/Eugeny/russh/security/advisories/GHSA-h5rc-j5f5-3gcm
EPSS is a daily estimate of the probability of exploitation activity being observed over the next 30 days. Following chart shows the EPSS score history of the vulnerability.
CWE - Common Weakness Enumeration

While CVE identifies specific instances of vulnerabilities, CWE categorizes the common flaws or weaknesses that can lead to vulnerabilities. CVE-2025-54804 is associated with the following CWEs:

Common Attack Pattern Enumeration and Classification (CAPEC)

Common Attack Pattern Enumeration and Classification (CAPEC) stores attack patterns, which are descriptions of the common attributes and approaches employed by adversaries to exploit the CVE-2025-54804 weaknesses.

CVSS31 - Vulnerability Scoring System
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