#VU105459 Resource exhaustion in crypto - CVE-2025-22869

Vulnerability identifier: #VU105459

Vulnerability risk: Low

CVSSv4.0: 1.3 [CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:U/U:Clear]

CVE-ID: CVE-2025-22869

CWE-ID: CWE-400

Exploitation vector: Network

Exploit availability: No

Vulnerable software:
crypto
Universal components / Libraries / Libraries used by multiple products

Vendor: Go

Description

The vulnerability allows a remote user to perform a denial of service (DoS) attack.

The vulnerability exists due to application does not properly control consumption of internal resources within the ssh package when handling clients that complete the key exchange slowly, or not at all. A remote user can trigger resource exhaustion and perform a denial of service (DoS) attack.

Mitigation
Install updates from vendor's website.

Vulnerable software versions

crypto: 0.0.0-0.20190320223903-b7391e95e576 - 0.34.0

---

External links
https://go.dev/cl/652135
https://go.dev/issue/71931
https://pkg.go.dev/vuln/GO-2025-3487
https://pkg.go.dev/golang.org/x/crypto/ssh

---

Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote authenticated user via the Internet.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.