Vulnerability-Lookup

FKIE_CVE-2026-5943

Vulnerability from fkie_nvd - Published: 2026-04-27 12:16 - Updated: 2026-06-17 10:59

Severity

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

Summary

Document structural anomalies caused inconsistencies between page element relationships and internal index states. When scripts triggered document modifications, object reference validity was not properly maintained, leading to a crash when accessing an invalid pointer during page information queries.

References

	URL	Tags
	14984358-7092-470d-8f34-ade47a7658a2	https://www.foxit.com/support/security-bulletins.html	Vendor Advisory

Impacted products

Vendor	Product	Version
foxit	pdf_editor	*
foxit	pdf_editor	*
foxit	pdf_editor	*
foxit	pdf_reader	*

JSON

To clipboard

{
  "affected": [
    {
      "affectedData": [
        {
          "defaultStatus": "unaffected",
          "platforms": [
            "Windows"
          ],
          "product": "Foxit PDF Editor",
          "vendor": "Foxit Software Inc.",
          "versions": [
            {
              "status": "affected",
              "version": "Versions 2026.1 and earlier"
            },
            {
              "status": "affected",
              "version": "Versions 14.0.3 and earlier"
            },
            {
              "status": "affected",
              "version": "Versions 13.2.3 and earlier"
            }
          ]
        },
        {
          "defaultStatus": "unaffected",
          "product": "Foxit PDF Reader",
          "vendor": "Foxit Software Inc.",
          "versions": [
            {
              "status": "affected",
              "version": "Versions 2026.1 and earlier"
            }
          ]
        }
      ],
      "source": "14984358-7092-470d-8f34-ade47a7658a2"
    }
  ],
  "configurations": [
    {
      "nodes": [
        {
          "cpeMatch": [
            {
              "criteria": "cpe:2.3:a:foxit:pdf_editor:*:*:*:*:*:*:*:*",
              "matchCriteriaId": "388A59F0-28A7-436B-BC75-C77E58F4ECDE",
              "versionEndExcluding": "13.2.4",
              "vulnerable": true
            },
            {
              "criteria": "cpe:2.3:a:foxit:pdf_editor:*:*:*:*:*:*:*:*",
              "matchCriteriaId": "6C4B8779-474C-43FC-B02E-3754BFAB2432",
              "versionEndExcluding": "14.0.4",
              "versionStartIncluding": "14.0.0",
              "vulnerable": true
            },
            {
              "criteria": "cpe:2.3:a:foxit:pdf_editor:*:*:*:*:*:*:*:*",
              "matchCriteriaId": "D3D204C5-D29B-4341-B48E-6F634E41126E",
              "versionEndExcluding": "2026.1.1",
              "versionStartIncluding": "2023.0.0",
              "vulnerable": true
            },
            {
              "criteria": "cpe:2.3:a:foxit:pdf_reader:*:*:*:*:*:*:*:*",
              "matchCriteriaId": "C18DA4A1-62E6-4734-840D-B5280B765A9E",
              "versionEndExcluding": "2026.1.1",
              "vulnerable": true
            }
          ],
          "negate": false,
          "operator": "OR"
        }
      ]
    }
  ],
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "Document structural anomalies caused inconsistencies between page element relationships and internal index states. When scripts triggered document modifications, object reference validity was not properly maintained, leading to a crash when accessing an invalid pointer during page information queries."
    }
  ],
  "id": "CVE-2026-5943",
  "lastModified": "2026-06-17T10:59:55.963",
  "metrics": {
    "cvssMetricV31": [
      {
        "cvssData": {
          "attackComplexity": "LOW",
          "attackVector": "LOCAL",
          "availabilityImpact": "HIGH",
          "baseScore": 7.8,
          "baseSeverity": "HIGH",
          "confidentialityImpact": "HIGH",
          "integrityImpact": "HIGH",
          "privilegesRequired": "NONE",
          "scope": "UNCHANGED",
          "userInteraction": "REQUIRED",
          "vectorString": "CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H",
          "version": "3.1"
        },
        "exploitabilityScore": 1.8,
        "impactScore": 5.9,
        "source": "14984358-7092-470d-8f34-ade47a7658a2",
        "type": "Secondary"
      }
    ],
    "ssvcV203": [
      {
        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "ssvcData": {
          "id": "CVE-2026-5943",
          "options": [
            {
              "exploitation": "none"
            },
            {
              "automatable": "no"
            },
            {
              "technicalImpact": "total"
            }
          ],
          "role": "CISA Coordinator",
          "timestamp": "2026-04-27T00:00:00+00:00",
          "version": "2.0.3"
        }
      }
    ]
  },
  "published": "2026-04-27T12:16:24.717",
  "references": [
    {
      "source": "14984358-7092-470d-8f34-ade47a7658a2",
      "tags": [
        "Vendor Advisory"
      ],
      "url": "https://www.foxit.com/support/security-bulletins.html"
    }
  ],
  "sourceIdentifier": "14984358-7092-470d-8f34-ade47a7658a2",
  "vulnStatus": "Analyzed",
  "weaknesses": [
    {
      "description": [
        {
          "lang": "en",
          "value": "CWE-416"
        }
      ],
      "source": "14984358-7092-470d-8f34-ade47a7658a2",
      "type": "Secondary"
    }
  ]
}

CVE-2026-5943 (GCVE-0-2026-5943)

Vulnerability from cvelistv5 – Published: 2026-04-27 11:00 – Updated: 2026-04-28 03:55

Title

Foxit PDF Editor/Reader AcroForm Annotation Use-After-Free Remote Code Execution Vulnerability

Summary

Severity

7.8 (High)


                        
                          CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

SSVC

Exploitation: none Automatable: no Technical Impact: total

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2026-04-27 00:00 UTC

CWE

CWE-416 - Use after free

Assigner

Foxit mitre root

References

1 reference

URL	Tags
https://www.foxit.com/support/security-bulletins.html

Impacted products

2 products

Vendor	Product	Version
Foxit Software Inc.	Foxit PDF Editor	Affected: Versions 2026.1 and earlier Affected: Versions 14.0.3 and earlier Affected: Versions 13.2.3 and earlier
Foxit Software Inc.	Foxit PDF Reader	Affected: Versions 2026.1 and earlier

Credits

Anonymous working with TrendAI Zero Day Initiative

Show details on NVD website

JSON

To clipboard

{
  "containers": {
    "adp": [
      {
        "metrics": [
          {
            "other": {
              "content": {
                "id": "CVE-2026-5943",
                "options": [
                  {
                    "Exploitation": "none"
                  },
                  {
                    "Automatable": "no"
                  },
                  {
                    "Technical Impact": "total"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2026-04-27T00:00:00+00:00",
                "version": "2.0.3"
              },
              "type": "ssvc"
            }
          }
        ],
        "providerMetadata": {
          "dateUpdated": "2026-04-28T03:55:23.507Z",
          "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
          "shortName": "CISA-ADP"
        },
        "title": "CISA ADP Vulnrichment"
      }
    ],
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "platforms": [
            "Windows"
          ],
          "product": "Foxit PDF Editor",
          "vendor": "Foxit Software Inc.",
          "versions": [
            {
              "status": "affected",
              "version": "Versions 2026.1 and earlier"
            },
            {
              "status": "affected",
              "version": "Versions 14.0.3 and earlier"
            },
            {
              "status": "affected",
              "version": "Versions 13.2.3 and earlier"
            }
          ]
        },
        {
          "defaultStatus": "unaffected",
          "product": "Foxit PDF Reader",
          "vendor": "Foxit Software Inc.",
          "versions": [
            {
              "status": "affected",
              "version": "Versions 2026.1 and earlier"
            }
          ]
        }
      ],
      "credits": [
        {
          "lang": "en",
          "type": "finder",
          "value": "Anonymous working with TrendAI Zero Day Initiative"
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "supportingMedia": [
            {
              "base64": false,
              "type": "text/html",
              "value": "Document structural anomalies caused inconsistencies between page element relationships and internal index states. When scripts triggered document modifications, object reference validity was not properly maintained, leading to a crash when accessing an invalid pointer during page information queries."
            }
          ],
          "value": "Document structural anomalies caused inconsistencies between page element relationships and internal index states. When scripts triggered document modifications, object reference validity was not properly maintained, leading to a crash when accessing an invalid pointer during page information queries."
        }
      ],
      "impacts": [
        {
          "descriptions": [
            {
              "lang": "en",
              "value": "Potential arbitrary code execution"
            }
          ]
        }
      ],
      "metrics": [
        {
          "cvssV3_1": {
            "attackComplexity": "LOW",
            "attackVector": "LOCAL",
            "availabilityImpact": "HIGH",
            "baseScore": 7.8,
            "baseSeverity": "HIGH",
            "confidentialityImpact": "HIGH",
            "integrityImpact": "HIGH",
            "privilegesRequired": "NONE",
            "scope": "UNCHANGED",
            "userInteraction": "REQUIRED",
            "vectorString": "CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H",
            "version": "3.1"
          },
          "format": "CVSS",
          "scenarios": [
            {
              "lang": "en",
              "value": "GENERAL"
            }
          ]
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "cweId": "CWE-416",
              "description": "CWE-416 Use after free",
              "lang": "en",
              "type": "CWE"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-04-27T11:00:31.554Z",
        "orgId": "14984358-7092-470d-8f34-ade47a7658a2",
        "shortName": "Foxit"
      },
      "references": [
        {
          "url": "https://www.foxit.com/support/security-bulletins.html"
        }
      ],
      "source": {
        "discovery": "UNKNOWN"
      },
      "title": "Foxit PDF Editor/Reader AcroForm Annotation Use-After-Free Remote Code Execution Vulnerability",
      "x_generator": {
        "engine": "Vulnogram 1.0.1"
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "14984358-7092-470d-8f34-ade47a7658a2",
    "assignerShortName": "Foxit",
    "cveId": "CVE-2026-5943",
    "datePublished": "2026-04-27T11:00:31.554Z",
    "dateReserved": "2026-04-09T03:42:20.240Z",
    "dateUpdated": "2026-04-28T03:55:23.507Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2"
}

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.

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.

Related by attack behaviour

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.