ubuntu-cve-2026-35433
Vulnerability from osv_ubuntu
Published
2026-05-12 18:17
Modified
2026-06-30 16:20
Summary
Details

Improper input validation in .NET allows an unauthorized attacker to elevate privileges locally.

Severity
7.3 (High)
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:L
7.3 (High)
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:L
N/A (UNKNOWN)
medium
References
To clipboard 

{
  "affected": [
    {
      "ecosystem_specific": {
        "binaries": [
          {
            "binary_name": "aspnetcore-runtime-7.0",
            "binary_version": "7.0.119-0ubuntu1~22.04.1"
          },
          {
            "binary_name": "aspnetcore-targeting-pack-7.0",
            "binary_version": "7.0.119-0ubuntu1~22.04.1"
          },
          {
            "binary_name": "dotnet-apphost-pack-7.0",
            "binary_version": "7.0.119-0ubuntu1~22.04.1"
          },
          {
            "binary_name": "dotnet-host-7.0",
            "binary_version": "7.0.119-0ubuntu1~22.04.1"
          },
          {
            "binary_name": "dotnet-hostfxr-7.0",
            "binary_version": "7.0.119-0ubuntu1~22.04.1"
          },
          {
            "binary_name": "dotnet-runtime-7.0",
            "binary_version": "7.0.119-0ubuntu1~22.04.1"
          },
          {
            "binary_name": "dotnet-sdk-7.0",
            "binary_version": "7.0.119-0ubuntu1~22.04.1"
          },
          {
            "binary_name": "dotnet-sdk-7.0-source-built-artifacts",
            "binary_version": "7.0.119-0ubuntu1~22.04.1"
          },
          {
            "binary_name": "dotnet-targeting-pack-7.0",
            "binary_version": "7.0.119-0ubuntu1~22.04.1"
          },
          {
            "binary_name": "dotnet-templates-7.0",
            "binary_version": "7.0.119-0ubuntu1~22.04.1"
          },
          {
            "binary_name": "dotnet7",
            "binary_version": "7.0.119-0ubuntu1~22.04.1"
          },
          {
            "binary_name": "netstandard-targeting-pack-2.1-7.0",
            "binary_version": "7.0.119-0ubuntu1~22.04.1"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:22.04:LTS",
        "name": "dotnet7",
        "purl": "pkg:deb/ubuntu/dotnet7@7.0.119-0ubuntu1~22.04.1?arch=source\u0026distro=jammy"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "7.0.105-0ubuntu1~22.04.1",
        "7.0.107-0ubuntu1~22.04.1",
        "7.0.108-0ubuntu1~22.04.1",
        "7.0.109-0ubuntu1~22.04.1",
        "7.0.110-0ubuntu1~22.04.1",
        "7.0.111-0ubuntu1~22.04.1",
        "7.0.112-0ubuntu1~22.04.1",
        "7.0.113-0ubuntu1~22.04.1",
        "7.0.114-0ubuntu1~22.04.1",
        "7.0.115-0ubuntu1~22.04.1",
        "7.0.116-0ubuntu1~22.04.1",
        "7.0.117-0ubuntu1~22.04.1",
        "7.0.117-0ubuntu1~22.04.2",
        "7.0.119-0ubuntu1~22.04.1"
      ]
    }
  ],
  "aliases": [],
  "details": "Improper input validation in .NET allows an unauthorized attacker to elevate privileges locally.",
  "id": "UBUNTU-CVE-2026-35433",
  "modified": "2026-06-30T16:20:57Z",
  "published": "2026-05-12T18:17:00Z",
  "references": [
    {
      "type": "REPORT",
      "url": "https://ubuntu.com/security/CVE-2026-35433"
    },
    {
      "type": "REPORT",
      "url": "https://www.cve.org/CVERecord?id=CVE-2026-35433"
    },
    {
      "type": "REPORT",
      "url": "https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-35433"
    },
    {
      "type": "REPORT",
      "url": "https://devblogs.microsoft.com/dotnet/dotnet-and-dotnet-framework-may-2026-servicing-updates"
    },
    {
      "type": "REPORT",
      "url": "https://github.com/dotnet/announcements/issues/398"
    }
  ],
  "related": [],
  "schema_version": "1.7.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:L",
      "type": "CVSS_V3"
    },
    {
      "score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:L",
      "type": "CVSS_V3"
    },
    {
      "score": "medium",
      "type": "Ubuntu"
    }
  ],
  "upstream": [
    "CVE-2026-35433"
  ]
}



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Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.

Sightings

Author Source Type Date Other

Nomenclature

  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
  • Confirmed: The vulnerability has been validated from an analyst's perspective.
  • Published Proof of Concept: A public proof of concept is available for this vulnerability.
  • Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
  • Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
  • Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
  • Not confirmed: The user expressed doubt about the validity of the vulnerability.
  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.


Detection rules are retrieved from Rulezet.