What’s Vulnerable › Vulnerabilities

CVE-2025-47913: Potential denial of service in golang.org/x/crypto/ssh/agent

• Severity: high (CVSS 7.5 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.7% probability of exploitation in the next 30 days
• Public exploit or detection template: yes
• Published: 2025-11-13 · updated 2026-10-18
• Weakness: CWE-617

Description

SSH clients receiving SSH_AGENT_SUCCESS when expecting a typed response will panic and cause early termination of the client process.

Affected products

• Go Ssh: before 0.43.0 — fixed in 0.43.0
• Golang.Org/X/Crypto: before 0.43.0 — fixed in 0.43.0

How to fix

Upgrade to a fixed version: Go Ssh 0.43.0; Golang.Org/X/Crypto 0.43.0. Check the vendor advisory for mitigations.

References

• https://github.com/advisories/GHSA-56w8-48fp-6mgv
• https://go.dev/cl/700295
• https://go.dev/issue/75178
• https://pkg.go.dev/vuln/GO-2025-4116

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