Vulnerability-Lookup

WID-SEC-W-2026-3534

Vulnerability from csaf_certbund - Published: 2026-09-22 22:00 - Updated: 2026-09-22 22:00

Summary

GNU Emacs: Schwachstelle ermöglicht Codeausführung

Severity

Hoch

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: GNU Emacs ist Texteditor, welcher durch eine Programmierschnittstelle in der Programmiersprache Emacs Lisp mit beliebigen Erweiterungen ausgestattet werden kann.

Angriff: Ein lokaler Angreifer kann eine Schwachstelle in GNU Emacs ausnutzen, um beliebigen Programmcode auszuführen.

Betroffene Betriebssysteme: - Linux - Sonstiges - UNIX - Windows

CVE-2026-96269

Affected products

Known affected 1 product

Product	Identifier	Version	Remediation
Open Source GNU Emacs 28.1-31.1 Open Source / GNU Emacs	`cpe:/a:gnu:emacs:28.1_-_31.1`	28.1-31.1

References

4 references

URL	Category
https://wid.cert-bund.de/.well-known/csaf/white/2…	self
https://wid.cert-bund.de/portal/wid/securityadvis…	self
https://github.com/advisories/GHSA-29X7-3Q83-3X3V	external
https://euvd.enisa.europa.eu/enisa/EUVD-2026-84868	external

JSON

To clipboard

{
  "document": {
    "aggregate_severity": {
      "text": "hoch"
    },
    "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": "GNU Emacs ist Texteditor, welcher durch eine Programmierschnittstelle in der Programmiersprache Emacs Lisp mit beliebigen Erweiterungen ausgestattet werden kann.",
        "title": "Produktbeschreibung"
      },
      {
        "category": "summary",
        "text": "Ein lokaler Angreifer kann eine Schwachstelle in GNU Emacs ausnutzen, um beliebigen Programmcode auszuf\u00fchren.",
        "title": "Angriff"
      },
      {
        "category": "general",
        "text": "- Linux\n- Sonstiges\n- UNIX\n- Windows",
        "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-2026-3534 - CSAF Version",
        "url": "https://wid.cert-bund.de/.well-known/csaf/white/2026/wid-sec-w-2026-3534.json"
      },
      {
        "category": "self",
        "summary": "WID-SEC-2026-3534 - Portal Version",
        "url": "https://wid.cert-bund.de/portal/wid/securityadvisory?name=WID-SEC-2026-3534"
      },
      {
        "category": "external",
        "summary": "GitHub Advisory Database vom 2026-09-22",
        "url": "https://github.com/advisories/GHSA-29X7-3Q83-3X3V"
      },
      {
        "category": "external",
        "summary": "EU Vulnerability Database vom 2026-09-22",
        "url": "https://euvd.enisa.europa.eu/enisa/EUVD-2026-84868"
      }
    ],
    "source_lang": "en-US",
    "title": "GNU Emacs: Schwachstelle erm\u00f6glicht Codeausf\u00fchrung",
    "tracking": {
      "current_release_date": "2026-09-22T22:00:00.000+00:00",
      "generator": {
        "date": "2026-09-23T11:39:24.072+00:00",
        "engine": {
          "name": "BSI-WID",
          "version": "1.6.0"
        }
      },
      "id": "WID-SEC-W-2026-3534",
      "initial_release_date": "2026-09-22T22:00:00.000+00:00",
      "revision_history": [
        {
          "date": "2026-09-22T22:00:00.000+00:00",
          "number": "1",
          "summary": "Initiale Fassung"
        }
      ],
      "status": "final",
      "version": "1"
    }
  },
  "product_tree": {
    "branches": [
      {
        "branches": [
          {
            "branches": [
              {
                "category": "product_version",
                "name": "28.1-31.1",
                "product": {
                  "name": "Open Source GNU Emacs 28.1-31.1",
                  "product_id": "T060024",
                  "product_identification_helper": {
                    "cpe": "cpe:/a:gnu:emacs:28.1_-_31.1"
                  }
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              }
            ],
            "category": "product_name",
            "name": "GNU Emacs"
          }
        ],
        "category": "vendor",
        "name": "Open Source"
      }
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  },
  "vulnerabilities": [
    {
      "cve": "CVE-2026-96269",
      "product_status": {
        "known_affected": [
          "T060024"
        ]
      },
      "release_date": "2026-09-22T22:00:00.000+00:00",
      "title": "CVE-2026-96269"
    }
  ]
}

CVE-2026-96269 (GCVE-0-2026-96269)

Vulnerability from cvelistv5 – Published: 2026-09-22 20:32 – Updated: 2026-09-24 01:51 X_Open Source

Summary

GNU Emacs 28.1 through 31.1 allows arbitrary code execution upon opening a file, because an untrusted value of read-symbol-shorthands affects the intern and unintern functions. This affects the default configuration; no particular user settings are required to trigger it.

Severity

7.5 (High)


                        
                          CVSS:4.0/AV:L/AC:L/AT:P/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N

SSVC

Exploitation: none Automatable: no Technical Impact: total

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2026-09-22 20:47 UTC

CWE

CWE-829 - Inclusion of Functionality from Untrusted Control Sphere

Assigner

mitre mitre root Scorecard

References

4 references

URL	Tags
https://yhetil.org/emacs/jwvtsph1aoj.fsf-monnier+…
https://debbugs.gnu.org/cgi/bugreport.cgi?bug=80574#227
https://eshelyaron.com/posts/2026-08-06-emacs-arb…
https://www.openwall.com/lists/oss-security/2026/…

Impacted products

1 product

Vendor	Product	Version
GNU	Emacs	Affected: 28.1 , ≤ 31.1 (custom) cpe:2.3:a:gnu:emacs::::::::

Show details on NVD website

JSON

To clipboard

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                "id": "CVE-2026-96269",
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                  },
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                "role": "CISA Coordinator",
                "timestamp": "2026-09-22T20:47:44.364030Z",
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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.

The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base model, served locally by ML-Gateway. They have not been verified by an analyst and are provided for guidance only.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.

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Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.

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WID-SEC-W-2026-3534

CVE-2026-96269 (GCVE-0-2026-96269)

Tags

Sightings

Nomenclature

Related by attack behaviour