Vulnerability-Lookup

FKIE_CVE-2026-91817

Vulnerability from fkie_nvd - Published: 2026-09-23 08:17 - Updated: 2026-10-01 20:23

Severity

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

Summary

A heap-based out-of-bounds read vulnerability exists in Foxit PDF Editor/Reader’s handling of wide strings in embedded PDF JavaScript. Insufficient validation of string-deletion ranges can cause an integer underflow, resulting in an out-of-bounds read and application crash.

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_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 2026.2 and earlier"
            },
            {
              "status": "affected",
              "version": "Versions 14.0.7 and earlier"
            },
            {
              "status": "affected",
              "version": "Versions 13.2.6 and earlier"
            }
          ]
        },
        {
          "defaultStatus": "unaffected",
          "platforms": [
            "Windows"
          ],
          "product": "Foxit PDF Reader",
          "vendor": "Foxit Software Inc.",
          "versions": [
            {
              "status": "affected",
              "version": "Versions 2026.2 and earlier"
            }
          ]
        }
      ],
      "source": "14984358-7092-470d-8f34-ade47a7658a2"
    }
  ],
  "configurations": [
    {
      "nodes": [
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          "cpeMatch": [
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              "criteria": "cpe:2.3:a:foxit:pdf_editor:*:*:*:*:*:*:*:*",
              "matchCriteriaId": "F56A28CE-B170-4EF6-9252-DAAAE95C8EFC",
              "versionEndIncluding": "13.2.5.63482",
              "vulnerable": true
            },
            {
              "criteria": "cpe:2.3:a:foxit:pdf_editor:*:*:*:*:*:*:*:*",
              "matchCriteriaId": "ACB35909-C2E9-45E0-A63D-A80DCD8ECC24",
              "versionEndIncluding": "14.0.7.33751",
              "versionStartIncluding": "14.0.0.33046",
              "vulnerable": true
            },
            {
              "criteria": "cpe:2.3:a:foxit:pdf_editor:*:*:*:*:*:*:*:*",
              "matchCriteriaId": "0C75FEE6-54F3-49C6-BAEA-A09D23BE5D64",
              "versionEndIncluding": "2023.3.0.23028",
              "versionStartIncluding": "2023.1.0.15510",
              "vulnerable": true
            },
            {
              "criteria": "cpe:2.3:a:foxit:pdf_editor:*:*:*:*:*:*:*:*",
              "matchCriteriaId": "2C06BC41-9831-4AE3-B10B-3FC313D01580",
              "versionEndIncluding": "2024.4.1.27687",
              "versionStartIncluding": "2024.1.0.23997",
              "vulnerable": true
            },
            {
              "criteria": "cpe:2.3:a:foxit:pdf_editor:*:*:*:*:*:*:*:*",
              "matchCriteriaId": "AD0AAFC0-5B9B-4A11-8967-4699792850F1",
              "versionEndIncluding": "2025.3.0.35737",
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              "vulnerable": true
            },
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              "matchCriteriaId": "757FC908-7C20-4D94-B5E4-83590D451EA1",
              "versionEndIncluding": "2026.2.0.39747",
              "versionStartIncluding": "2026.1.0.36452",
              "vulnerable": true
            },
            {
              "criteria": "cpe:2.3:a:foxit:pdf_reader:*:*:*:*:*:*:*:*",
              "matchCriteriaId": "379C8399-B43C-47AE-BA7B-0FAC7682BF7B",
              "versionEndIncluding": "2026.2.0.39747",
              "vulnerable": true
            }
          ],
          "negate": false,
          "operator": "OR"
        }
      ]
    }
  ],
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "A heap-based out-of-bounds read vulnerability exists in Foxit PDF Editor/Reader\u2019s handling of wide strings in embedded PDF JavaScript. Insufficient validation of string-deletion ranges can cause an integer underflow, resulting in an out-of-bounds read and application crash."
    }
  ],
  "id": "CVE-2026-91817",
  "lastModified": "2026-10-01T20:23:59.847",
  "metrics": {
    "cvssMetricV31": [
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        "cvssData": {
          "attackComplexity": "LOW",
          "attackVector": "LOCAL",
          "availabilityImpact": "HIGH",
          "baseScore": 6.1,
          "baseSeverity": "MEDIUM",
          "confidentialityImpact": "LOW",
          "integrityImpact": "NONE",
          "privilegesRequired": "NONE",
          "scope": "UNCHANGED",
          "userInteraction": "REQUIRED",
          "vectorString": "CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:H",
          "version": "3.1"
        },
        "exploitabilityScore": 1.8,
        "impactScore": 4.2,
        "source": "14984358-7092-470d-8f34-ade47a7658a2",
        "type": "Secondary"
      }
    ],
    "ssvcV203": [
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        "ssvcData": {
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          "options": [
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            },
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            },
            {
              "technicalImpact": "partial"
            }
          ],
          "role": "CISA Coordinator",
          "timestamp": "2026-09-23T14:22:00.125904Z",
          "version": "2.0.3"
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  "published": "2026-09-23T08:17:14.010",
  "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": [
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        {
          "lang": "en",
          "value": "CWE-125"
        }
      ],
      "source": "14984358-7092-470d-8f34-ade47a7658a2",
      "type": "Secondary"
    }
  ]
}

CVE-2026-91817 (GCVE-0-2026-91817)

Vulnerability from cvelistv5 – Published: 2026-09-23 07:49 – Updated: 2026-09-23 14:22

Title

Foxit PDF Editor/Reader AcroForm Out-of-Bounds Read Remote Code Execution Vulnerability

Summary

Severity

6.1 (Medium)


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

SSVC

Exploitation: none Automatable: no Technical Impact: partial

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2026-09-23 14:22 UTC

CWE

CWE-125 - Out-of-bounds Read (CWE-125)

Assigner

Foxit mitre root Scorecard

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 2026.2 and earlier Affected: Versions 14.0.7 and earlier Affected: Versions 13.2.6 and earlier
Foxit Software Inc.	Foxit PDF Reader	Affected: Versions 2026.2 and earlier

Credits

Anonymous working with TrendAI Zero Day Initiative

Show details on NVD website

JSON

To clipboard

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                "id": "CVE-2026-91817",
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                  },
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                  },
                  {
                    "Technical Impact": "partial"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2026-09-23T14:22:00.125904Z",
                "version": "2.0.3"
              },
              "type": "ssvc"
            }
          }
        ],
        "providerMetadata": {
          "dateUpdated": "2026-09-23T14:22:36.779Z",
          "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
          "shortName": "CISA-ADP"
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    "cna": {
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            {
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              "version": "Versions 2026.2 and earlier"
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              "status": "affected",
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            },
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            {
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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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FKIE_CVE-2026-91817

CVE-2026-91817 (GCVE-0-2026-91817)

Tags

Sightings

Nomenclature

Related by attack behaviour