CVE-2026-55200
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Wykryta podatność w libssh2 umożliwia zdalne wykonanie kodu przez nadmiarowe zapisy w pamięci.
CVSS
8.1
EPSS
4.0%
Exploit
poc
Vendor
libssh2
Opis źródłowy (NVD)
libssh2 through 1.11.1, fixed in commit 7acf3df contains an out-of-bounds write vulnerability in ssh2_transport_read() that fails to enforce upper bounds on packet_length field. Remote attackers can send crafted SSH packets with excessively large packet_length values to corrupt heap memory and achieve remote code execution.
exploit rce
Brak patcha
Źródła i daty
| Źródło | Wartość |
|---|---|
| NVD – CVSS | 8.1 |
| CISA KEV (aktywnie wykorzystywane) | Nie |
| FIRST EPSS (prawdopodobieństwo exploita) | 4.0% |
| Opublikowano (NVD) | 2026-06-17 20:17:28 UTC |
| Ostatnia modyfikacja (NVD) | 2026-09-17 17:04:42 UTC |
Referencje
- https://github.com/libssh2/libssh2/commit/97acf3dfda80c91c3a8c9f2372546301d4a1a7a8 ([email protected]) [Patch]
- https://github.com/libssh2/libssh2/pull/2052 ([email protected]) [Patch]
- https://www.vulncheck.com/advisories/libssh2-out-of-bounds-write-via-unchecked-packet-length-in-transport-c ([email protected]) [Third Party Advisory]
- https://web.archive.org/web/20260623211210/https://github.com/bikini/exploitarium/tree/main/libssh2-cve-2026-55200-poc (134c704f-9b21-4f2e-91b3-4a467353bcc0) [Exploit, Third Party Advisory]