High severity · published Nov 13, 2025
CVE-2025-47913
Potential denial of service in golang.org/x/crypto/ssh/agent
7.5
CVSS
0.7%
EPSS
No
On KEV
Description
SSH clients receiving SSH_AGENT_SUCCESS when expecting a typed response will panic and cause early termination of the client process.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Attack vector
Network
Complexity
Low
Privileges
None
User interaction
None
Confidentiality
None
Integrity
None
Availability
High
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.7% · higher than 52% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
GO
golang.org/x/crypto/ssh/agent · golang.org/x/crypto
before 0.43.0 · source: vendor
SS
Ssh · GO
before 0.43.0 · source: NVD
Affected product
GO
golang.org/x/crypto/ssh/agent
golang.org/x/crypto
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2025-47913
CVE.org
https://www.cve.org/CVERecord?id=CVE-2025-47913
Third Party Advisory
https://github.com/advisories/GHSA-56w8-48fp-6mgv
Patch
https://go.dev/cl/700295
Exploit
https://go.dev/issue/75178
Vendor Advisory
https://pkg.go.dev/vuln/GO-2025-4116
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Invoking key constraints not enforced in golang.org/x/crypto/ssh/agent
5.3
CVE-2026-46598
Invoking pathological inputs can lead to client panic in golang.org/x/crypto/ssh/agent
5.3
CVE-2025-47914
Malformed constraint may cause denial of service in golang.org/x/crypto/ssh/agent