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CVE-2026-59845 is a local denial-of-service vulnerability in libssh affecting code paths that use ProxyCommand. If a fork() call fails and the error is not properly checked, the resulting process identifier value of -1 can be retained as though it were a valid child process ID. During subsequent cleanup, libssh may send signals based on that invalid PID state, causing signal delivery across processes accessible to the caller rather than only to the intended child process. The flaw is rooted in improper handling of a failed system call in the ProxyCommand process-management logic.
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What an attacker gets, and what they’ve been doing with it.
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No public exploits tracked yet. Mallory keeps watching.
No public exploit code observed for this vulnerability.
Products and vendors Mallory has correlated with this vulnerability. Open in Mallory to drill down to specific CPE configurations and version ranges.
Vendor-confirmed product mapping. Mallory continuously reconciles this list against your asset inventory.
1 sources tracked across advisories and community write-ups. News coverage will land here when it surfaces.
No news coverage yet. Advisories and community discussion only.
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Every observed campaign linking this CVE to a named adversary.
Malware families riding this exploit, with evidence and IOCs.
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Cross-references every affected SKU, including bundled OEM variants.
Community discussion across Reddit, Mastodon, and other social sources.