Vulnerability-Lookup

FKIE_CVE-2026-3776

Vulnerability from fkie_nvd - Published: 2026-04-01 02:16 - Updated: 2026-06-17 10:44

Severity

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

Summary

The application does not validate the presence of required appearance (AP) data before accessing stamp annotation resources. When a PDF contains a stamp annotation missing its AP entry, the code continues to dereference the associated object without a prior null or validity check, which allows a crafted document to trigger a null pointer dereference and crash the application, resulting in denial of service.

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_editor	*
foxit	pdf_editor	*
foxit	pdf_reader	*
microsoft	windows	-
foxit	pdf_editor	*
foxit	pdf_editor	*
foxit	pdf_editor	*
foxit	pdf_editor	*
foxit	pdf_editor	*
foxit	pdf_reader	*
apple	macos	-

JSON

To clipboard

{
  "affected": [
    {
      "affectedData": [
        {
          "defaultStatus": "unaffected",
          "platforms": [
            "Windows",
            "MacOS"
          ],
          "product": "Foxit PDF Editor",
          "vendor": "Foxit Software Inc.",
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            {
              "status": "affected",
              "version": "Versions 2025.3 and earlier"
            },
            {
              "status": "affected",
              "version": "Versions 14.0.2 and earlier"
            },
            {
              "status": "affected",
              "version": "Versions 13.2.2 and earlier"
            }
          ]
        },
        {
          "defaultStatus": "unaffected",
          "platforms": [
            "Windows",
            "MacOS"
          ],
          "product": "Foxit PDF Reader",
          "vendor": "Foxit Software Inc.",
          "versions": [
            {
              "status": "affected",
              "version": "Versions 2025.3 and earlier"
            }
          ]
        }
      ],
      "source": "14984358-7092-470d-8f34-ade47a7658a2"
    }
  ],
  "configurations": [
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              "versionEndIncluding": "13.2.2.24014",
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  ],
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "The application does not validate the presence of required appearance (AP) data before accessing stamp annotation resources. When a PDF contains a stamp annotation missing its AP entry, the code continues to dereference the associated object without a prior null or validity check, which allows a crafted document to trigger a null pointer dereference and crash the application, resulting in denial of service."
    },
    {
      "lang": "es",
      "value": "La aplicaci\u00f3n no valida la presencia de los datos de apariencia (AP) requeridos antes de acceder a los recursos de anotaci\u00f3n de sello. Cuando un PDF contiene una anotaci\u00f3n de sello a la que le falta su entrada AP, el c\u00f3digo contin\u00faa desreferenciando el objeto asociado sin una comprobaci\u00f3n previa de nulidad o validez, lo que permite que un documento manipulado active una desreferencia de puntero nulo y bloquee la aplicaci\u00f3n, lo que resulta en denegaci\u00f3n de servicio."
    }
  ],
  "id": "CVE-2026-3776",
  "lastModified": "2026-06-17T10:44:11.880",
  "metrics": {
    "cvssMetricV31": [
      {
        "cvssData": {
          "attackComplexity": "LOW",
          "attackVector": "LOCAL",
          "availabilityImpact": "HIGH",
          "baseScore": 5.5,
          "baseSeverity": "MEDIUM",
          "confidentialityImpact": "NONE",
          "integrityImpact": "NONE",
          "privilegesRequired": "NONE",
          "scope": "UNCHANGED",
          "userInteraction": "REQUIRED",
          "vectorString": "CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H",
          "version": "3.1"
        },
        "exploitabilityScore": 1.8,
        "impactScore": 3.6,
        "source": "14984358-7092-470d-8f34-ade47a7658a2",
        "type": "Secondary"
      }
    ],
    "ssvcV203": [
      {
        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "ssvcData": {
          "id": "CVE-2026-3776",
          "options": [
            {
              "exploitation": "none"
            },
            {
              "automatable": "no"
            },
            {
              "technicalImpact": "partial"
            }
          ],
          "role": "CISA Coordinator",
          "timestamp": "2026-04-01T14:16:53.743286Z",
          "version": "2.0.3"
        }
      }
    ]
  },
  "published": "2026-04-01T02:16:02.590",
  "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-476"
        }
      ],
      "source": "14984358-7092-470d-8f34-ade47a7658a2",
      "type": "Secondary"
    }
  ]
}

CVE-2026-3776 (GCVE-0-2026-3776)

Vulnerability from cvelistv5 – Published: 2026-04-01 01:40 – Updated: 2026-04-02 02:12

Title

Null pointer dereference in Foxit PDF Editor/Reader when accessing stamp annotation

Summary

Severity

5.5 (Medium)


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

SSVC

Exploitation: none Automatable: no Technical Impact: partial

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2026-04-01 14:16 UTC

CWE

CWE-476 - NULL pointer dereference

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 2025.3 and earlier Affected: Versions 14.0.2 and earlier Affected: Versions 13.2.2 and earlier
Foxit Software Inc.	Foxit PDF Reader	Affected: Versions 2025.3 and earlier

Credits

Suyue Guo from UCSB Seclab

Show details on NVD website

JSON

To clipboard

{
  "containers": {
    "adp": [
      {
        "metrics": [
          {
            "other": {
              "content": {
                "id": "CVE-2026-3776",
                "options": [
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                    "Exploitation": "none"
                  },
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                    "Automatable": "no"
                  },
                  {
                    "Technical Impact": "partial"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2026-04-01T14:16:53.743286Z",
                "version": "2.0.3"
              },
              "type": "ssvc"
            }
          }
        ],
        "providerMetadata": {
          "dateUpdated": "2026-04-01T15:50:55.555Z",
          "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
          "shortName": "CISA-ADP"
        },
        "title": "CISA ADP Vulnrichment"
      }
    ],
    "cna": {
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          "platforms": [
            "Windows",
            "MacOS"
          ],
          "product": "Foxit PDF Editor",
          "vendor": "Foxit Software Inc.",
          "versions": [
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              "status": "affected",
              "version": "Versions 2025.3 and earlier"
            },
            {
              "status": "affected",
              "version": "Versions 14.0.2 and earlier"
            },
            {
              "status": "affected",
              "version": "Versions 13.2.2 and earlier"
            }
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        },
        {
          "defaultStatus": "unaffected",
          "platforms": [
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          "product": "Foxit PDF Reader",
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      "credits": [
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          "type": "finder",
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        }
      ],
      "descriptions": [
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      "source": {
        "discovery": "UNKNOWN"
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    "dateReserved": "2026-03-08T03:43:23.264Z",
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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.

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.