CVE-2026-66032
A remote, anonymous attacker can exploit multiple vulnerabilities in libssh2 to potentially disclose confidential information, cause a Denial-of-Service condition, or execute arbitrary code.
CSIRTS triage
- What
- Multiple vulnerabilities can be exploited by a remote, anonymous attacker to disclose confidential information, cause a Denial-of-Service condition, or execute arbitrary code.
- Who is affected
- Deployments of libssh2.
- Urgency
- Remediation is high urgency due to the severity and potential for exploitation.
- Action
- Update to the latest version of libssh2 immediately.
AI-assisted analysis generated from the source advisory — verify against the original.
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Exploitation outlook
- Low exploitation risk0.29% 30-day exploitation probability — currently an unlikely target, but scores change as exploit code circulates. Riskier than 21% of all EPSS-scored CVEs.
Advisory coverage (3)
- high[NEW] [high] libssh2: Multiple vulnerabilitiescert-bund · 2026-07-28
- highCVE-2026-66032: libssh2 through 1.11.1, fixed in commit 5e47761, contains a double-free vulnerability in the s…nvd · 2026-07-24
- highCVE-2026-66032: libssh2 Double-Free Heap Corruption via sftp_open()msrc · 2026-07-14
External references
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