WID-SEC-W-2026-1334

Vulnerability from csaf_certbund - Published: 2026-05-03 22:00 - Updated: 2026-05-21 22:00
Summary
Exim und cPanel/WHM: Mehrere Schwachstellen
Severity
Mittel
Notes
Das BSI ist als Anbieter für die eigenen, zur Nutzung bereitgestellten Inhalte nach den allgemeinen Gesetzen verantwortlich. Nutzerinnen und Nutzer sind jedoch dafür verantwortlich, die Verwendung und/oder die Umsetzung der mit den Inhalten bereitgestellten Informationen sorgfältig im Einzelfall zu prüfen.
Produktbeschreibung: Exim (EXperimental Internet Mailer) ist ein Mailserver und Mail Transfer Agent. cPanel ist eine Software für die Verwaltung von Webhosting Auftritten. Die Software ermöglicht es dem Endanwender, Statistiken einzusehen, neue Benutzeraccounts anzulegen, Maileinstellungen zu verändern und vieles mehr.
Angriff: Ein entfernter, anonymer Angreifer kann mehrere Schwachstellen in Exim und cPanel cPanel/WHM ausnutzen, um einen Denial of Service Angriff durchzuführen, Daten zu manipulieren oder vertrauliche Informationen offenzulegen.
Betroffene Betriebssysteme: - Sonstiges - UNIX
CVE-2026-40684
Affected products
Product Identifier Version Remediation
cPanel cPanel/WHM <118.0.64
cPanel / cPanel/WHM
 <118.0.64
cPanel cPanel/WHM <126.0.56
cPanel / cPanel/WHM
 <126.0.56
cPanel cPanel/WHM 126.0.63
cPanel / cPanel/WHM
 cpe:/a:cpanel:cpanel_whm:126.0.63 126.0.63
Open Source Exim <4.99.2
Open Source / Exim
 <4.99.2
cPanel cPanel/WHM <110.0.112
cPanel / cPanel/WHM
 <110.0.112
cPanel cPanel/WHM <134.0.30
cPanel / cPanel/WHM
 <134.0.30
Debian Linux
Debian
 cpe:/o:debian:debian_linux:- —
cPanel cPanel/WHM <136.0.14
cPanel / cPanel/WHM
 <136.0.14
Ubuntu Linux
Ubuntu
 cpe:/o:canonical:ubuntu_linux:- —
cPanel cPanel/WHM <134.0.23
cPanel / cPanel/WHM
 <134.0.23
cPanel cPanel/WHM <136.0.7
cPanel / cPanel/WHM
 <136.0.7
CVE-2026-40685
Affected products
Product Identifier Version Remediation
cPanel cPanel/WHM <118.0.64
cPanel / cPanel/WHM
 <118.0.64
cPanel cPanel/WHM <126.0.56
cPanel / cPanel/WHM
 <126.0.56
cPanel cPanel/WHM 126.0.63
cPanel / cPanel/WHM
 cpe:/a:cpanel:cpanel_whm:126.0.63 126.0.63
Open Source Exim <4.99.2
Open Source / Exim
 <4.99.2
cPanel cPanel/WHM <110.0.112
cPanel / cPanel/WHM
 <110.0.112
cPanel cPanel/WHM <134.0.30
cPanel / cPanel/WHM
 <134.0.30
Debian Linux
Debian
 cpe:/o:debian:debian_linux:- —
cPanel cPanel/WHM <136.0.14
cPanel / cPanel/WHM
 <136.0.14
Ubuntu Linux
Ubuntu
 cpe:/o:canonical:ubuntu_linux:- —
cPanel cPanel/WHM <134.0.23
cPanel / cPanel/WHM
 <134.0.23
cPanel cPanel/WHM <136.0.7
cPanel / cPanel/WHM
 <136.0.7
CVE-2026-40686
Affected products
Product Identifier Version Remediation
cPanel cPanel/WHM <118.0.64
cPanel / cPanel/WHM
 <118.0.64
cPanel cPanel/WHM <126.0.56
cPanel / cPanel/WHM
 <126.0.56
cPanel cPanel/WHM 126.0.63
cPanel / cPanel/WHM
 cpe:/a:cpanel:cpanel_whm:126.0.63 126.0.63
Open Source Exim <4.99.2
Open Source / Exim
 <4.99.2
cPanel cPanel/WHM <110.0.112
cPanel / cPanel/WHM
 <110.0.112
cPanel cPanel/WHM <134.0.30
cPanel / cPanel/WHM
 <134.0.30
Debian Linux
Debian
 cpe:/o:debian:debian_linux:- —
cPanel cPanel/WHM <136.0.14
cPanel / cPanel/WHM
 <136.0.14
Ubuntu Linux
Ubuntu
 cpe:/o:canonical:ubuntu_linux:- —
cPanel cPanel/WHM <134.0.23
cPanel / cPanel/WHM
 <134.0.23
cPanel cPanel/WHM <136.0.7
cPanel / cPanel/WHM
 <136.0.7
CVE-2026-40687
Affected products
Product Identifier Version Remediation
cPanel cPanel/WHM <118.0.64
cPanel / cPanel/WHM
 <118.0.64
cPanel cPanel/WHM <126.0.56
cPanel / cPanel/WHM
 <126.0.56
cPanel cPanel/WHM 126.0.63
cPanel / cPanel/WHM
 cpe:/a:cpanel:cpanel_whm:126.0.63 126.0.63
Open Source Exim <4.99.2
Open Source / Exim
 <4.99.2
cPanel cPanel/WHM <110.0.112
cPanel / cPanel/WHM
 <110.0.112
cPanel cPanel/WHM <134.0.30
cPanel / cPanel/WHM
 <134.0.30
Debian Linux
Debian
 cpe:/o:debian:debian_linux:- —
cPanel cPanel/WHM <136.0.14
cPanel / cPanel/WHM
 <136.0.14
Ubuntu Linux
Ubuntu
 cpe:/o:canonical:ubuntu_linux:- —
cPanel cPanel/WHM <134.0.23
cPanel / cPanel/WHM
 <134.0.23
cPanel cPanel/WHM <136.0.7
cPanel / cPanel/WHM
 <136.0.7
References
To clipboard 

{
  "document": {
    "aggregate_severity": {
      "text": "mittel"
    },
    "category": "csaf_base",
    "csaf_version": "2.0",
    "distribution": {
      "tlp": {
        "label": "WHITE",
        "url": "https://www.first.org/tlp/"
      }
    },
    "lang": "de-DE",
    "notes": [
      {
        "category": "legal_disclaimer",
        "text": "Das BSI ist als Anbieter f\u00fcr die eigenen, zur Nutzung bereitgestellten Inhalte nach den allgemeinen Gesetzen verantwortlich. Nutzerinnen und Nutzer sind jedoch daf\u00fcr verantwortlich, die Verwendung und/oder die Umsetzung der mit den Inhalten bereitgestellten Informationen sorgf\u00e4ltig im Einzelfall zu pr\u00fcfen."
      },
      {
        "category": "description",
        "text": "Exim (EXperimental Internet Mailer) ist ein Mailserver und Mail Transfer Agent.\r\ncPanel ist eine Software f\u00fcr die Verwaltung von Webhosting Auftritten. Die Software erm\u00f6glicht es dem Endanwender, Statistiken einzusehen, neue Benutzeraccounts anzulegen, Maileinstellungen zu ver\u00e4ndern und vieles mehr.",
        "title": "Produktbeschreibung"
      },
      {
        "category": "summary",
        "text": "Ein entfernter, anonymer Angreifer kann mehrere Schwachstellen in Exim und cPanel cPanel/WHM ausnutzen, um einen Denial of Service Angriff durchzuf\u00fchren, Daten zu manipulieren oder vertrauliche Informationen offenzulegen.",
        "title": "Angriff"
      },
      {
        "category": "general",
        "text": "- Sonstiges\n- UNIX",
        "title": "Betroffene Betriebssysteme"
      }
    ],
    "publisher": {
      "category": "other",
      "contact_details": "csaf-provider@cert-bund.de",
      "name": "Bundesamt f\u00fcr Sicherheit in der Informationstechnik",
      "namespace": "https://www.bsi.bund.de"
    },
    "references": [
      {
        "category": "self",
        "summary": "WID-SEC-W-2026-1334 - CSAF Version",
        "url": "https://wid.cert-bund.de/.well-known/csaf/white/2026/wid-sec-w-2026-1334.json"
      },
      {
        "category": "self",
        "summary": "WID-SEC-2026-1334 - Portal Version",
        "url": "https://wid.cert-bund.de/portal/wid/securityadvisory?name=WID-SEC-2026-1334"
      },
      {
        "category": "external",
        "summary": "Exim Announce vom 2026-05-03",
        "url": "https://lists.exim.org/lurker/message/20260429.121733.f58d9686.en.html"
      },
      {
        "category": "external",
        "summary": "cPanel Change Log vom 2026-05-03",
        "url": "https://docs.cpanel.net/changelogs/110-change-log/"
      },
      {
        "category": "external",
        "summary": "cPanel Change Log vom 2026-05-03",
        "url": "https://docs.cpanel.net/changelogs/118-change-log/"
      },
      {
        "category": "external",
        "summary": "cPanel Change Log vom 2026-05-03",
        "url": "https://docs.cpanel.net/changelogs/126-change-log/"
      },
      {
        "category": "external",
        "summary": "cPanel Change Log vom 2026-05-03",
        "url": "https://docs.cpanel.net/changelogs/134-change-log/"
      },
      {
        "category": "external",
        "summary": "cPanel Change Log vom 2026-05-03",
        "url": "https://docs.cpanel.net/changelogs/136-change-log/"
      },
      {
        "category": "external",
        "summary": "Ubuntu Security Notice USN-8228-1 vom 2026-05-04",
        "url": "https://ubuntu.com/security/notices/USN-8228-1"
      },
      {
        "category": "external",
        "summary": "Debian Security Advisory DSA-6265 vom 2026-05-12",
        "url": "https://lists.debian.org/debian-security-announce/2026/msg00176.html"
      },
      {
        "category": "external",
        "summary": "cPanel \u0026 WHM Change Log vom 2026-05-21",
        "url": "https://docs.cpanel.net/changelogs/136-change-log/"
      },
      {
        "category": "external",
        "summary": "cPanel \u0026 WHM Change Log vom 2026-05-21",
        "url": "https://docs.cpanel.net/changelogs/126-change-log/"
      },
      {
        "category": "external",
        "summary": "cPanel \u0026 WHM Change Log vom 2026-05-21",
        "url": "https://docs.cpanel.net/changelogs/134-change-log/"
      }
    ],
    "source_lang": "en-US",
    "title": "Exim und cPanel/WHM: Mehrere Schwachstellen",
    "tracking": {
      "current_release_date": "2026-05-21T22:00:00.000+00:00",
      "generator": {
        "date": "2026-05-22T07:22:25.205+00:00",
        "engine": {
          "name": "BSI-WID",
          "version": "1.6.0"
        }
      },
      "id": "WID-SEC-W-2026-1334",
      "initial_release_date": "2026-05-03T22:00:00.000+00:00",
      "revision_history": [
        {
          "date": "2026-05-03T22:00:00.000+00:00",
          "number": "1",
          "summary": "Initiale Fassung"
        },
        {
          "date": "2026-05-04T22:00:00.000+00:00",
          "number": "2",
          "summary": "Neue Updates von Ubuntu aufgenommen"
        },
        {
          "date": "2026-05-12T22:00:00.000+00:00",
          "number": "3",
          "summary": "Neue Updates von Debian aufgenommen"
        },
        {
          "date": "2026-05-21T22:00:00.000+00:00",
          "number": "4",
          "summary": "Neue Updates aufgenommen"
        }
      ],
      "status": "final",
      "version": "4"
    }
  },
  "product_tree": {
    "branches": [
      {
        "branches": [
          {
            "category": "product_name",
            "name": "Debian Linux",
            "product": {
              "name": "Debian Linux",
              "product_id": "2951",
              "product_identification_helper": {
                "cpe": "cpe:/o:debian:debian_linux:-"
              }
            }
          }
        ],
        "category": "vendor",
        "name": "Debian"
      },
      {
        "branches": [
          {
            "branches": [
              {
                "category": "product_version_range",
                "name": "\u003c4.99.2",
                "product": {
                  "name": "Open Source Exim \u003c4.99.2",
                  "product_id": "T053482"
                }
              },
              {
                "category": "product_version",
                "name": "4.99.2",
                "product": {
                  "name": "Open Source Exim 4.99.2",
                  "product_id": "T053482-fixed",
                  "product_identification_helper": {
                    "cpe": "cpe:/a:exim:exim:4.99.2"
                  }
                }
              }
            ],
            "category": "product_name",
            "name": "Exim"
          }
        ],
        "category": "vendor",
        "name": "Open Source"
      },
      {
        "branches": [
          {
            "category": "product_name",
            "name": "Ubuntu Linux",
            "product": {
              "name": "Ubuntu Linux",
              "product_id": "T000126",
              "product_identification_helper": {
                "cpe": "cpe:/o:canonical:ubuntu_linux:-"
              }
            }
          }
        ],
        "category": "vendor",
        "name": "Ubuntu"
      },
      {
        "branches": [
          {
            "branches": [
              {
                "category": "product_version_range",
                "name": "\u003c110.0.112",
                "product": {
                  "name": "cPanel cPanel/WHM \u003c110.0.112",
                  "product_id": "T053483"
                }
              },
              {
                "category": "product_version",
                "name": "110.0.112",
                "product": {
                  "name": "cPanel cPanel/WHM 110.0.112",
                  "product_id": "T053483-fixed",
                  "product_identification_helper": {
                    "cpe": "cpe:/a:cpanel:cpanel_whm:110.0.112"
                  }
                }
              },
              {
                "category": "product_version_range",
                "name": "\u003c118.0.64",
                "product": {
                  "name": "cPanel cPanel/WHM \u003c118.0.64",
                  "product_id": "T053484"
                }
              },
              {
                "category": "product_version",
                "name": "118.0.64",
                "product": {
                  "name": "cPanel cPanel/WHM 118.0.64",
                  "product_id": "T053484-fixed",
                  "product_identification_helper": {
                    "cpe": "cpe:/a:cpanel:cpanel_whm:118.0.64"
                  }
                }
              },
              {
                "category": "product_version_range",
                "name": "\u003c126.0.56",
                "product": {
                  "name": "cPanel cPanel/WHM \u003c126.0.56",
                  "product_id": "T053485"
                }
              },
              {
                "category": "product_version",
                "name": "126.0.56",
                "product": {
                  "name": "cPanel cPanel/WHM 126.0.56",
                  "product_id": "T053485-fixed",
                  "product_identification_helper": {
                    "cpe": "cpe:/a:cpanel:cpanel_whm:126.0.56"
                  }
                }
              },
              {
                "category": "product_version_range",
                "name": "\u003c134.0.23",
                "product": {
                  "name": "cPanel cPanel/WHM \u003c134.0.23",
                  "product_id": "T053486"
                }
              },
              {
                "category": "product_version",
                "name": "134.0.23",
                "product": {
                  "name": "cPanel cPanel/WHM 134.0.23",
                  "product_id": "T053486-fixed",
                  "product_identification_helper": {
                    "cpe": "cpe:/a:cpanel:cpanel_whm:134.0.23"
                  }
                }
              },
              {
                "category": "product_version_range",
                "name": "\u003c136.0.7",
                "product": {
                  "name": "cPanel cPanel/WHM \u003c136.0.7",
                  "product_id": "T053487"
                }
              },
              {
                "category": "product_version",
                "name": "136.0.7",
                "product": {
                  "name": "cPanel cPanel/WHM 136.0.7",
                  "product_id": "T053487-fixed",
                  "product_identification_helper": {
                    "cpe": "cpe:/a:cpanel:cpanel_whm:136.0.7"
                  }
                }
              },
              {
                "category": "product_version_range",
                "name": "\u003c136.0.14",
                "product": {
                  "name": "cPanel cPanel/WHM \u003c136.0.14",
                  "product_id": "T054471"
                }
              },
              {
                "category": "product_version",
                "name": "136.0.14",
                "product": {
                  "name": "cPanel cPanel/WHM 136.0.14",
                  "product_id": "T054471-fixed",
                  "product_identification_helper": {
                    "cpe": "cpe:/a:cpanel:cpanel_whm:136.0.14"
                  }
                }
              },
              {
                "category": "product_version_range",
                "name": "\u003c134.0.30",
                "product": {
                  "name": "cPanel cPanel/WHM \u003c134.0.30",
                  "product_id": "T054472"
                }
              },
              {
                "category": "product_version",
                "name": "134.0.30",
                "product": {
                  "name": "cPanel cPanel/WHM 134.0.30",
                  "product_id": "T054472-fixed",
                  "product_identification_helper": {
                    "cpe": "cpe:/a:cpanel:cpanel_whm:134.0.30"
                  }
                }
              },
              {
                "category": "product_version",
                "name": "126.0.63",
                "product": {
                  "name": "cPanel cPanel/WHM 126.0.63",
                  "product_id": "T054473",
                  "product_identification_helper": {
                    "cpe": "cpe:/a:cpanel:cpanel_whm:126.0.63"
                  }
                }
              }
            ],
            "category": "product_name",
            "name": "cPanel/WHM"
          }
        ],
        "category": "vendor",
        "name": "cPanel"
      }
    ]
  },
  "vulnerabilities": [
    {
      "cve": "CVE-2026-40684",
      "product_status": {
        "known_affected": [
          "T053484",
          "T053485",
          "T054473",
          "T053482",
          "T053483",
          "T054472",
          "2951",
          "T054471",
          "T000126",
          "T053486",
          "T053487"
        ]
      },
      "release_date": "2026-05-03T22:00:00.000+00:00",
      "title": "CVE-2026-40684"
    },
    {
      "cve": "CVE-2026-40685",
      "product_status": {
        "known_affected": [
          "T053484",
          "T053485",
          "T054473",
          "T053482",
          "T053483",
          "T054472",
          "2951",
          "T054471",
          "T000126",
          "T053486",
          "T053487"
        ]
      },
      "release_date": "2026-05-03T22:00:00.000+00:00",
      "title": "CVE-2026-40685"
    },
    {
      "cve": "CVE-2026-40686",
      "product_status": {
        "known_affected": [
          "T053484",
          "T053485",
          "T054473",
          "T053482",
          "T053483",
          "T054472",
          "2951",
          "T054471",
          "T000126",
          "T053486",
          "T053487"
        ]
      },
      "release_date": "2026-05-03T22:00:00.000+00:00",
      "title": "CVE-2026-40686"
    },
    {
      "cve": "CVE-2026-40687",
      "product_status": {
        "known_affected": [
          "T053484",
          "T053485",
          "T054473",
          "T053482",
          "T053483",
          "T054472",
          "2951",
          "T054471",
          "T000126",
          "T053486",
          "T053487"
        ]
      },
      "release_date": "2026-05-03T22:00:00.000+00:00",
      "title": "CVE-2026-40687"
    }
  ]
}


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Tags
Taxonomy of the tags.





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.