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CVE-2026-59843

Estado: ModificadaMedia (6.5)—

A flaw was found in libssh. A remote authenticated peer can advertise a zero maximum packet size in SSH_MSG_CHANNEL_OPEN, causing later channel writes to loop indefinitely and consume CPU, leading to denial of service.

CVSS

Probabilidad de explotación (EPSS)

EPSS (Exploit Prediction Scoring System, de FIRST) estima la probabilidad de que una vulnerabilidad sea explotada en 30 días. Complementa a CVSS (impacto) y a CISA KEV (explotación confirmada).

Tecnologías afectadas (3)

Libssh — LibsshRedhat — Enterprise LinuxRedhat — Hardened Images

CWE

Referencias

JSON original (NVD)

Mostrar
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          "options": [
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              "exploitation": "none"
            },
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              "automatable": "no"
            },
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              "technicalImpact": "partial"
            }
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          "version": "2.0.3",
          "timestamp": "2026-07-21T12:08:16.810909Z"
        }
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          "vendor": "Red Hat",
          "product": "Red Hat Hardened Images",
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  "published": "2026-07-21T12:18:57.860",
  "references": [
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  "weaknesses": [
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      "source": "secalert@redhat.com",
      "description": [
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      "value": "A flaw was found in libssh. A remote authenticated peer can advertise a zero maximum packet size in SSH_MSG_CHANNEL_OPEN, causing later channel writes to loop indefinitely and consume CPU, leading to denial of service."
    }
  ],
  "lastModified": "2026-09-01T21:18:34.337",
  "configurations": [
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