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CVE-2026-55200

Reported by 3 distinct sources tracked by ThreatFilter. First reported 2026-06-17 20:17 UTC, most recent 2026-06-29 07:06 UTC.

HIGH 8.3

Corroboration timeline

Each row is the first time that source reported this CVE, so the lag column shows how long each took relative to the earliest report. Corroboration across distinct sources is a confidence signal that a single advisory cannot give you.

  1. nvd-cve2026-06-17 20:17 UTCfirst report

    CVE-2026-55200 — libssh2 1.11.1, fixed in commit 97acf3d, contains an out-of-bounds write vulnerability in ssh2_transport_read() that fails to enforce upper

  2. microsoft-msrc2026-06-28 08:49 UTC+11d

    CVE-2026-55200 libssh2 - Out-of-Bounds Write via Unchecked packet_length in transport.c

  3. thehackernews2026-06-29 07:06 UTC+11d

    Public PoC Released for Critical libssh2 CVE-2026-55200 Client-Side SSH Flaw

How this page is built

ThreatFilter ingests 52 public threat-intelligence feeds. A page is published here only when at least 3 distinct sources report the same CVE — roughly 0.2% of the CVEs seen. Everything above is derived from those feeds; nothing is hand-written, and the timeline is the raw record of what each source published and when.

See the live advisory feed, the full source list, or the analyst tools.