CVE-2026-55653
⚪ Do wiadomości
Podwójne zwolnienie pamięci w OpenSSH umożliwia atakującemu zdalne wywołanie DoS.
CVSS
4.3
EPSS
0.5%
Exploit
poc
Vendor
redhat
Opis źródłowy (NVD)
A flaw was found in OpenSSH. A malicious SSH server can exploit a double free vulnerability in the Diffie-Hellman Group Exchange (DH-GEX) client path. This occurs during FIPS (Federal Information Processing Standards) mode known-group validation when the client processes attacker-controlled DH-GEX group parameters. Successful exploitation leads to client-side process termination, resulting in a Denial of Service (DoS).
dos exploit
Brak patcha
Źródła i daty
| Źródło | Wartość |
|---|---|
| NVD – CVSS | 4.3 |
| CISA KEV (aktywnie wykorzystywane) | Nie |
| FIRST EPSS (prawdopodobieństwo exploita) | 0.5% |
| Opublikowano (NVD) | 2026-06-23 04:17:36 UTC |
| Ostatnia modyfikacja (NVD) | 2026-10-06 16:17:08 UTC |
Referencje
- https://access.redhat.com/errata/RHSA-2026:36759 ([email protected])
- https://access.redhat.com/errata/RHSA-2026:47755 ([email protected])
- https://access.redhat.com/errata/RHSA-2026:47756 ([email protected])
- https://access.redhat.com/errata/RHSA-2026:47757 ([email protected])
- https://access.redhat.com/errata/RHSA-2026:54387 ([email protected])
- https://access.redhat.com/errata/RHSA-2026:58981 ([email protected])
- https://access.redhat.com/errata/RHSA-2026:76748 ([email protected])
- https://access.redhat.com/security/cve/CVE-2026-55653 ([email protected]) [Vendor Advisory]
- https://bugzilla.redhat.com/show_bug.cgi?id=2462351 ([email protected]) [Exploit, Issue Tracking, Vendor Advisory]