USN-8519-1: Go Cryptography vulnerabilities

unknownCVE-2025-47913 CVE-2025-22869

Jakub Ciolek and Nicola Murino discovered that Go Cryptography incorrectly handled SSH agent responses. An attacker could use this to cause a denial of service. (CVE-2025-47913) Yuichi Watanabe discovered that Go Cryptography incorrectly handled SSH key exchanges. An attacker could use this to cause a denial of service. This issue did not affect Ubuntu 16.04 LTS. (CVE-2025-22869)

CSIRTS triage

vendor: Go product: Go Cryptography Denial of service

What: Vulnerabilities in Go Cryptography can be exploited to cause a denial of service.
Who is affected: Users of Go Cryptography are affected.
Urgency: Remediation is of unknown urgency due to the severity not being specified.
Action: Monitor for updates and apply patches as they become available.

AI-assisted analysis generated from the source advisory — verify against the original.

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Details

Source: Ubuntu Security Notices (INTL · vendor-psirt · site)
Severity: unknown
Published: 2026-07-09
Exploitation: Not in CISA KEV at last sync

Original advisory: https://ubuntu.com/security/notices/USN-8519-1

Exploitation outlook

EPSS (FIRST.org) estimates each CVE’s probability of exploitation in the next 30 days — here is the CSIRTS.com read on those numbers.

Low exploitation riskCVE-2025-479130.59% 30-day exploitation probability — currently an unlikely target, but scores change as exploit code circulates. Riskier than 44% of all scored CVEs.
Low exploitation riskCVE-2025-228690.87% 30-day exploitation probability — currently an unlikely target, but scores change as exploit code circulates. Riskier than 54% of all scored CVEs.

Referenced CVEs

CVE	CSIRTS overview	External
CVE-2025-47913	coverage & exploitation status	NVD · CVE.org
CVE-2025-22869	coverage & exploitation status	NVD · CVE.org

Same CVEs, other sources

How other CERTs, PSIRTs and databases cover the vulnerabilities in this advisory.

medium[UPDATE] [medium] Golang Go: Vulnerability allows Denial of Servicecert-bund
medium[UPDATE] [medium] Red Hat Enterprise Linux (Gatekeeper): Multiple vulnerabilities allow Denial of Servicecert-bund