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Vulnerabilities/CVE-2026-91807Public Intelligence Dossier
Source: foxit · Limited verification•Last verified: •Collection Degraded
CVE-2026-91807Unknown / EvaluatingMEDIUM (raw)CVSS 6.1CWE-125

A heap-based out-of-bounds read vulnerability exists in Foxit PDF Editor/Reader’s handling of malformed image soft-mask data

Published: 23 Sept 2026•Last updated: 15 Oct 2026, 08:18 PM IST•Source identifier: 14984358-7092-470d-8f34-ade47a7658a2
Dossier completeness: source-provided sections 2 / 3 · rule guidance not available. Missing source facts count as incomplete.
Official source
CISA KEV catalog
Unknown
KEV status was not determined.
CVSS score
6.1MEDIUM (raw)
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:H
Metric source14984358-7092-470d-8f34-ade47a7658a2
EPSS probability
0.1%0.001
Percentile1st
Weakness type
CWE-125
No further CWE recorded
Remediation
Patch status unknown
No fixed version or KB recorded

Why It Matters

Analysis dossier

Why It Matters

A heap-based out-of-bounds read vulnerability exists in Foxit PDF Editor/Reader’s handling of malformed image soft-mask data. Insufficient validation of the soft-mask data attribute during image parsing may cause an arithmetic underflow, resulting in an out-of-bounds read and application crash.

SOC priority

Medium

Actively exploited

Unknown

Publicly disclosed

Unknown

Risk basis: Microsoft or Microsoft-managed product relevance; No confirmed exploitation signal in current enrichment

Affected Products & Remediation

2 source-backed products
Affected products and versions (source)
  • foxit pdf editor · <= 13.2.5.63482; >= 14.0.0.33046 <= 14.0.7.33751; >= 2023.1.0.15510 <= 2023.3.0.23028; >= 2024.1.0.23997 <= 2024.4.1.27687; >= 2025.1.0.27937 <= 2025.3.0.35737; >= 2026.1.0.36452 <= 2026.2.0.39747; <= 13.2.2.63349; >= 14.0.0.68868 <= 14.0.7.69441; >= 2023.1.0.55583 <= 2023.3.0.63083; >= 2024.1.0.63682 <= 2024.4.1.66479; >= 2025.1.0.66692 <= 2025.3.0.69570; >= 2026.1.0.70169 <= 2026.2.0.72029 · NVD CPE · Source
  • foxit pdf reader · <= 2026.2.0.39747; <= 2026.2.1.39815 · NVD CPE · Source
NVD applicability prerequisites: cpe:2.3:o:microsoft:windows:-:*:*:*:*:*:*:*, cpe:2.3:o:apple:macos:-:*:*:*:*:*:*:*. These are conditions, not proof that an environment is exposed or unaffected.
Recorded patch / KBNot provided by source

Vendor or catalog guidance (source)

Not provided by source

Known exploitation (source facts)

Only what a source states. Unknown means no source has said either way; it is not "not exploited".

CISA KEV
Unknown
Exploited (source statement)
Unknown
Publicly disclosed (source)
Unknown

Suggested hunting (rule-based inference)

SecOps Signal recommendation (rule-based inference). These steps are hunting hypotheses from the vulnerability class; they do not state or imply that exploitation occurred here or anywhere.

No rule-based guidance for this vulnerability class

CISA KEV Record

CISA KEV status was not determined for this record.

Change History & Source Data

— No recorded material change

CNA / source
14984358-7092-470d-8f34-ade47a7658a2
Record status · verification
UPDATED · NVD API
CPE
cpe:2.3:a:foxit:pdf_editor:*:*:*:*:*:*:*:*, cpe:2.3:a:foxit:pdf_reader:*:*:*:*:*:*:*:*, cpe:2.3:o:microsoft:windows:-:*:*:*:*:*:*:*, cpe:2.3:o:apple:macos:-:*:*:*:*:*:*:*

Evidence & Provenance

2 public sources
foxit.comSource recordnvd.nist.govSource record

Linked by the query's stored exact CVE association. Review required tables and validation status before use.

Detection Hunting Query
Target: DeviceTvmSoftwareVulnerabilities•Defender XDR
Detect endpoints exposed to CVE-2026-91807
Purpose: Exposure assessment (Category: Exposure Check)Why linked: Query metadata names CVE-2026-91807
DeviceTvmSoftwareVulnerabilities| where CveId == "CVE-2026-91807"| project DeviceId, DeviceName, OSPlatform, OSVersion, SoftwareVendor, SoftwareName, SoftwareVersion, CveId, VulnerabilitySeverityLevel, RecommendedSecurityUpdate, RecommendedSecurityUpdateId| sort by VulnerabilitySeverityLevel desc
Schema Checked · Not runtime validatedSource: SecOps Signal deterministic template · Limited verificationStatic screening: Passed structure and schema checks; tenant execution is not verified.
Open KQL Library

Correlated briefings

— No published briefing references this CVE

SecOps Signal surfaces public advisory facts only. A missing value means the source has not published it, not that your environment is unaffected. No tenant inventory is connected.