certfr_avis - certfr-2026-avi-0429

CERTFR-2026-AVI-0429

Vulnerability from certfr_avis

Une vulnérabilité a été découverte dans Adobe Acrobat. Elle permet à un attaquant de provoquer une exécution de code arbitraire.

Adobe indique que la vulnérabilité CVE-2026-34621 est activement exploitée.

Solutions

Se référer au bulletin de sécurité de l'éditeur pour l'obtention des correctifs (cf. section Documentation).

Impacted products

Vendor	Product	Description
Adobe	Acrobat	Acrobat 2024 versions antérieures à 24.001.30360 sur macOS
Adobe	Acrobat Reader	Acrobat Reader DC versions antérieures à 26.001.21411 sur Windows et macOS
Adobe	Acrobat	Acrobat DC versions antérieures à 26.001.21411 sur Windows et macOS
Adobe	Acrobat	Acrobat 2024 versions antérieures à 24.001.30362 sur Windows

References

Title

Publication Time

Tags

Bulletin de sécurité Adobe APSB26-43

2026-04-11

vendor-advisory

Show details on source website

JSON

To clipboard

{
  "$ref": "https://www.cert.ssi.gouv.fr/openapi.json",
  "affected_systems": [
    {
      "description": "Acrobat 2024 versions ant\u00e9rieures \u00e0 24.001.30360 sur macOS",
      "product": {
        "name": "Acrobat",
        "vendor": {
          "name": "Adobe",
          "scada": false
        }
      }
    },
    {
      "description": "Acrobat Reader DC versions ant\u00e9rieures \u00e0 26.001.21411 sur Windows et macOS",
      "product": {
        "name": "Acrobat Reader",
        "vendor": {
          "name": "Adobe",
          "scada": false
        }
      }
    },
    {
      "description": "Acrobat DC versions ant\u00e9rieures \u00e0 26.001.21411 sur Windows et macOS",
      "product": {
        "name": "Acrobat",
        "vendor": {
          "name": "Adobe",
          "scada": false
        }
      }
    },
    {
      "description": "Acrobat 2024 versions ant\u00e9rieures \u00e0 24.001.30362 sur Windows",
      "product": {
        "name": "Acrobat",
        "vendor": {
          "name": "Adobe",
          "scada": false
        }
      }
    }
  ],
  "affected_systems_content": "",
  "content": "## Solutions\n\nSe r\u00e9f\u00e9rer au bulletin de s\u00e9curit\u00e9 de l\u0027\u00e9diteur pour l\u0027obtention des correctifs (cf. section Documentation).",
  "cves": [
    {
      "name": "CVE-2026-34621",
      "url": "https://www.cve.org/CVERecord?id=CVE-2026-34621"
    }
  ],
  "initial_release_date": "2026-04-13T00:00:00",
  "last_revision_date": "2026-04-13T00:00:00",
  "links": [],
  "reference": "CERTFR-2026-AVI-0429",
  "revisions": [
    {
      "description": "Version initiale",
      "revision_date": "2026-04-13T00:00:00.000000"
    }
  ],
  "risks": [
    {
      "description": "Ex\u00e9cution de code arbitraire"
    }
  ],
  "summary": "Une vuln\u00e9rabilit\u00e9 a \u00e9t\u00e9 d\u00e9couverte dans Adobe Acrobat. Elle permet \u00e0 un attaquant de provoquer une ex\u00e9cution de code arbitraire.\n\nAdobe indique que la vuln\u00e9rabilit\u00e9 CVE-2026-34621 est activement exploit\u00e9e.",
  "title": "Vuln\u00e9rabilit\u00e9 dans Adobe Acrobat",
  "vendor_advisories": [
    {
      "published_at": "2026-04-11",
      "title": "Bulletin de s\u00e9curit\u00e9 Adobe APSB26-43",
      "url": "https://helpx.adobe.com/security/products/acrobat/apsb26-43.html"
    }
  ]
}

CVE-2026-34621 (GCVE-0-2026-34621)

Vulnerability from cvelistv5

Published

2026-04-11 06:45

Modified

2026-04-14 03:55

Severity ?

8.6 (High) - CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:H

CWE

CWE-1321 - Improperly Controlled Modification of Object Prototype Attributes ('Prototype Pollution') ()

Summary

Acrobat Reader versions 24.001.30356, 26.001.21367 and earlier are affected by an Improperly Controlled Modification of Object Prototype Attributes ('Prototype Pollution') vulnerability that could result in arbitrary code execution in the context of the current user. Exploitation of this issue requires user interaction in that a victim must open a malicious file.

References

URL

Tags

https://helpx.adobe.com/security/products/acrobat/apsb26-43.html

vendor-advisory

Impacted products

	Vendor	Product	Version
	Adobe	Acrobat Reader	Version: 0 ≤ 26.001.21367

Show details on NVD website

JSON

To clipboard

{
  "containers": {
    "adp": [
      {
        "metrics": [
          {
            "other": {
              "content": {
                "id": "CVE-2026-34621",
                "options": [
                  {
                    "Exploitation": "active"
                  },
                  {
                    "Automatable": "no"
                  },
                  {
                    "Technical Impact": "total"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2026-04-11T00:00:00+00:00",
                "version": "2.0.3"
              },
              "type": "ssvc"
            }
          },
          {
            "other": {
              "content": {
                "dateAdded": "2026-04-13",
                "reference": "https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2026-34621"
              },
              "type": "kev"
            }
          }
        ],
        "providerMetadata": {
          "dateUpdated": "2026-04-14T03:55:27.955Z",
          "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
          "shortName": "CISA-ADP"
        },
        "references": [
          {
            "tags": [
              "government-resource"
            ],
            "url": "https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2026-34621"
          }
        ],
        "timeline": [
          {
            "lang": "en",
            "time": "2026-04-13T00:00:00.000Z",
            "value": "CVE-2026-34621 added to CISA KEV"
          }
        ],
        "title": "CISA ADP Vulnrichment"
      }
    ],
    "cna": {
      "affected": [
        {
          "defaultStatus": "affected",
          "product": "Acrobat Reader",
          "vendor": "Adobe",
          "versions": [
            {
              "lessThanOrEqual": "26.001.21367",
              "status": "affected",
              "version": "0",
              "versionType": "semver"
            }
          ]
        }
      ],
      "datePublic": "2026-04-10T17:00:00.000Z",
      "descriptions": [
        {
          "lang": "en",
          "value": "Acrobat Reader versions 24.001.30356, 26.001.21367 and earlier are affected by an Improperly Controlled Modification of Object Prototype Attributes (\u0027Prototype Pollution\u0027) vulnerability that could result in arbitrary code execution in the context of the current user. Exploitation of this issue requires user interaction in that a victim must open a malicious file."
        }
      ],
      "metrics": [
        {
          "cvssV3_1": {
            "attackComplexity": "LOW",
            "attackVector": "LOCAL",
            "availabilityImpact": "HIGH",
            "availabilityRequirement": "NOT_DEFINED",
            "baseScore": 8.6,
            "baseSeverity": "HIGH",
            "confidentialityImpact": "HIGH",
            "confidentialityRequirement": "NOT_DEFINED",
            "environmentalScore": 8.6,
            "environmentalSeverity": "HIGH",
            "exploitCodeMaturity": "NOT_DEFINED",
            "integrityImpact": "HIGH",
            "integrityRequirement": "NOT_DEFINED",
            "modifiedAttackComplexity": "LOW",
            "modifiedAttackVector": "LOCAL",
            "modifiedAvailabilityImpact": "HIGH",
            "modifiedConfidentialityImpact": "HIGH",
            "modifiedIntegrityImpact": "HIGH",
            "modifiedPrivilegesRequired": "NONE",
            "modifiedScope": "CHANGED",
            "modifiedUserInteraction": "REQUIRED",
            "privilegesRequired": "NONE",
            "remediationLevel": "NOT_DEFINED",
            "reportConfidence": "NOT_DEFINED",
            "scope": "CHANGED",
            "temporalScore": 8.6,
            "temporalSeverity": "HIGH",
            "userInteraction": "REQUIRED",
            "vectorString": "CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:H",
            "version": "3.1"
          },
          "format": "CVSS",
          "scenarios": [
            {
              "lang": "en",
              "value": "GENERAL"
            }
          ]
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "cweId": "CWE-1321",
              "description": "Improperly Controlled Modification of Object Prototype Attributes (\u0027Prototype Pollution\u0027) (CWE-1321)",
              "lang": "en",
              "type": "CWE"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-04-12T04:20:33.694Z",
        "orgId": "078d4453-3bcd-4900-85e6-15281da43538",
        "shortName": "adobe"
      },
      "references": [
        {
          "tags": [
            "vendor-advisory"
          ],
          "url": "https://helpx.adobe.com/security/products/acrobat/apsb26-43.html"
        }
      ],
      "source": {
        "discovery": "EXTERNAL"
      },
      "title": "Acrobat Reader | Improperly Controlled Modification of Object Prototype Attributes (\u0027Prototype Pollution\u0027) (CWE-1321)"
    }
  },
  "cveMetadata": {
    "assignerOrgId": "078d4453-3bcd-4900-85e6-15281da43538",
    "assignerShortName": "adobe",
    "cveId": "CVE-2026-34621",
    "datePublished": "2026-04-11T06:45:43.512Z",
    "dateReserved": "2026-03-30T17:30:36.490Z",
    "dateUpdated": "2026-04-14T03:55:27.955Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2"
}

Sightings

Author	Source	Type	Date

Nomenclature

Seen: The vulnerability was mentioned, discussed, or seen somewhere by the user.
Confirmed: The vulnerability is confirmed from an analyst perspective.
Published Proof of Concept: A public proof of concept is available for this vulnerability.
Exploited: This vulnerability was exploited and seen by the user reporting the sighting.
Patched: This vulnerability was successfully patched by the user reporting the sighting.
Not exploited: This vulnerability was not exploited or seen by the user reporting the sighting.
Not confirmed: The user expresses doubt about the veracity of the vulnerability.
Not patched: This vulnerability was not successfully patched by the user reporting the sighting.

Action not permitted

CERTFR-2026-AVI-0429

Vulnerability from certfr_avis

Solutions

CVE-2026-34621 (GCVE-0-2026-34621)

Vulnerability from cvelistv5

Tags

Sightings

Nomenclature