CVE-2026-110926

Status: Awaiting AnalysisMedium (5.3)—

Severity5.3Medium · CVSS 3.1

Exploitation probability0.30 %higher than 22% of CVEs

Active exploitationNonot in the CISA catalog

Public exploitNot knownno public code found

A flaw was found in OpenSSH. When compression is negotiated, channels on the same connection share one LZ77 dictionary. A peer who can write on one channel can recover plaintext from another channel by chosen-plaintext lengths.

CVSS

Base score: 5.3
Version: 3.1
Vector: CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:N/A:N

Exploitation probability (EPSS)

Probability of exploitation in the next 30 days: 0.30 %
Percentile among all scored CVEs: 22
Score date: 10/20/2026

EPSS (Exploit Prediction Scoring System, FIRST) estimates how likely a vulnerability is to be exploited in the wild within 30 days. It complements CVSS (impact) and CISA KEV (confirmed exploitation).

ATT&CK techniques

How this vulnerability is exploited and what the attacker gains, in MITRE ATT&CK terms.

ExploitationT1210 Exploitation of Remote Serviceslateral movement80 %
Primary impactT1005 Data from Local Systemcollection40 %

El vector AV:N/PR:L indica explotación remota con credenciales; el texto dice que un par puede recuperar texto plano de otro canal, lo que sugiere lectura de datos, aunque no especifica qué datos.

Inferred by our analysis agent from the official description, CVSS vector and CWE, and checked by a supervisor. May contain errors.

ATT&CK mitigations that cover these techniques

Vulnerability Scanning Threat Intelligence Program Privileged Account Management Network Segmentation Disable or Remove Feature or Program Application Isolation and Sandboxing

Affected technologies (1)

⚠ AI-inferred from the description — NVD hasn't analyzed this CVE yet, these aren't verified CPEs.

Openbsd — Openssh^AI

CWEs

CWE-203

References

Show 3 references

Raw JSON (NVD)

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{
  "id": "CVE-2026-110926",
  "cveTags": [],
  "metrics": {
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          "options": [
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              "automatable": "no"
            },
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            }
          ],
          "version": "2.0.3",
          "timestamp": "2026-10-15T13:15:00.361119Z"
        }
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    "cvssMetricV31": [
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        "cvssData": {
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          "attackVector": "NETWORK",
          "baseSeverity": "MEDIUM",
          "vectorString": "CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:N/A:N",
          "integrityImpact": "NONE",
          "userInteraction": "NONE",
          "attackComplexity": "HIGH",
          "availabilityImpact": "NONE",
          "privilegesRequired": "LOW",
          "confidentialityImpact": "HIGH"
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        "impactScore": 3.6,
        "exploitabilityScore": 1.6
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          "packageName": "openshell",
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          "cpes": [
            "cpe:/a:redhat:openshift:4"
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          "vendor": "Red Hat",
          "product": "Red Hat OpenShift Container Platform 4",
          "packageName": "openshift/ose-rhel-coreos-8",
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          "vendor": "Red Hat",
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          "packageName": "openshift/ose-rhel-coreos-9",
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  "published": "2026-10-15T06:17:01.440",
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      "source": "secalert@redhat.com"
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      "url": "https://access.redhat.com/security/cve/CVE-2026-110926",
      "source": "secalert@redhat.com"
    },
    {
      "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2553035",
      "source": "secalert@redhat.com"
    }
  ],
  "vulnStatus": "Awaiting Analysis",
  "weaknesses": [
    {
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      "source": "secalert@redhat.com",
      "description": [
        {
          "lang": "en",
          "value": "CWE-203"
        }
      ]
    }
  ],
  "descriptions": [
    {
      "lang": "en",
      "value": "A flaw was found in OpenSSH. When compression is negotiated, channels on the same connection share one LZ77 dictionary. A peer who can write on one channel can recover plaintext from another channel by chosen-plaintext lengths."
    }
  ],
  "lastModified": "2026-10-19T22:17:03.610",
  "sourceIdentifier": "secalert@redhat.com"
}