ZDF
Sign inSign up

Vulnerabilities

Security fix · CVE-2025-54804

Russh is a Rust SSH client & server library.

Published Aug 5, 2025 · catalog updated Aug 5, 2025 · Eugeny

Check this week

CVE-2025-54804 is not in CISA KEV. FIRST estimates a 40.00% chance of exploitation in the next 30 days. Check whether you run Eugeny.

Gaps on this record

  • No vendor fix or required action is stored. Compare the linked advisory before you change production.
Severity
Medium6.5
Known exploitation
Not in CISA/VulnCheck KEV
EPSS
40.00%
Remediation
Version ranges on file
Affected products
vendor Eugeny russh < 0.54.1

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.

Are you affected?

Enter the version you run. The result uses only the ranges stored on this record.

The check returns affected, not affected, or incomplete. It does not guess a version that is missing from the record.

  • vendor Eugeny russh < 0.54.1< 0.54.1

How to fix CVE-2025-54804

What to do

Three questions, each answered from this record only. Confirm the vendor advisory before you patch.

Should you patch?

CVE-2025-54804 is not in CISA KEV. FIRST estimates a 40.00% chance of exploitation in the next 30 days. Check whether you run Eugeny.

Which versions are affected?

Compare what you have installed with Eugeny russh < 0.54.1 < 0.54.1. Compare the installed version with the linked vendor advisory before you change production.

What should an analyst verify?

No weakness class is stored. EPSS 40.00%. There is no CISA KEV listing. No Exploit-DB or Metasploit reference is linked. Use the source links for the original advisory.

Code

The project this record applies to. Exploit listings stay in References.

Timeline

Detection, updates, and resolution for this record.

  1. Aug 5, 2025 · EUVD

    Detected

    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 che

  2. Aug 5, 2025 · EUVD

    Updated

    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 che

Sources

  • CVE.orgVulnerability recordCVE-2025-54804

    Official CVE identifier

    cve.org
  • EUVDVulnerability recordEUVD-2025-23576

    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 a

    euvd.enisa.europa.eu

References

Freshness

Last verified in this catalog Aug 5, 2025. Significant claims (KEV, EPSS, CVSS, affected ranges) come from the source rows above — open the original publisher for the authoritative advisory.