CVE-2025-58181

Unbounded memory consumption in golang.org/x/crypto/ssh

CVSS 5.3 MEDIUMEPSS 0.5%CWE-770

Vexday Risk Score

13Low

SSVC decision (CISA)

Track

No exploitation signal → monitor

CVSS 5.3EPSS 0.5%KEV nãoPoC —Nuclei —Metasploit —Patch —

Lifecycle

19 Nov 2025Published on NVD

Recommendation: Monitor — no exploitation signal at the moment.

SSH servers parsing GSSAPI authentication requests do not validate the number of mechanisms specified in the request, allowing an attacker to cause unbounded memory consumption.

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L

Affected products

golang.org/x/crypto · golang.org/x/crypto/ssh

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References

https://go.dev/cl/721961 https://go.dev/issue/76363 https://groups.google.com/g/golang-announce/c/w-oX3UxNcZA https://pkg.go.dev/vuln/GO-2025-4134