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. 13, 2025, 6:32 p.m.
Remotely Exploit :
Yes !
Source :
[email protected]
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.
CVSS Scores
| Score | Version | Severity | Vector | Exploitability Score | Impact Score | Source |
|---|---|---|---|---|---|---|
| CVSS 3.1 | MEDIUM | [email protected] |
Solution
- Update Russh to version 0.54.1.
- Apply patches if updating is not possible.
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 | Patch |
| https://github.com/Eugeny/russh/security/advisories/GHSA-h5rc-j5f5-3gcm | Exploit Vendor Advisory |
| https://github.com/Eugeny/russh/security/advisories/GHSA-h5rc-j5f5-3gcm | Exploit Vendor Advisory |
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.
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.
-
Initial Analysis by [email protected]
Aug. 13, 2025
Action Type Old Value New Value Added CPE Configuration OR *cpe:2.3:a:russh_project:russh:*:*:*:*:*:rust:*:* versions up to (excluding) 0.54.1 *cpe:2.3:a:warpgate_project:warpgate:*:*:*:*:*:*:*:* versions up to (excluding) 0.16.0 Added Reference Type GitHub, Inc.: https://github.com/Eugeny/russh/commit/0eb5e406780890e21ff71dd25d731b30676478e5 Types: Patch Added Reference Type CISA-ADP: https://github.com/Eugeny/russh/security/advisories/GHSA-h5rc-j5f5-3gcm Types: Exploit, Vendor Advisory Added Reference Type GitHub, Inc.: https://github.com/Eugeny/russh/security/advisories/GHSA-h5rc-j5f5-3gcm Types: Exploit, Vendor Advisory -
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