Medium severity · published Sep 23, 2026
CVE-2026-91807
Foxit PDF Editor/Reader PDF File Parsing Out-Of-Bounds Read Information Disclosure Vulnerability
6.1
CVSS
0.2%
EPSS
No
On KEV
Description
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.
CVSS vector
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:H
Attack vector
Local
Complexity
Low
Privileges
None
User interaction
Required
Confidentiality
Low
Integrity
None
Availability
High
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.2% · higher than 4% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
FP
Foxit PDF Editor · Foxit Software Inc.
Versions 2026.2 and earlier; Versions 14.0.7 and earlier; Versions 2026.2 and earlier; Versions 14.0.7 and earlier; Versions 13.2.6 and earlier · source: vendor
FP
Foxit PDF Reader · Foxit Software Inc.
Versions 2026.2 and earlier · source: vendor
PE
Pdf Editor · Foxit
through 13.2.5.63482; 14.0.0.33046 through 14.0.7.33751; 2023.1.0.15510 through 2023.3.0.23028; 2024.1.0.23997 through 2024.4.1.27687; 2025.1.0.27937 through 2025.3.0.35737; 2026.1.0.36452 through 2026.2.0.39747; +6 more · source: NVD
PR
Pdf Reader · Foxit
through 2026.2.0.39747; through 2026.2.1.39815 · source: NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-91807
CVE.org
https://www.cve.org/CVERecord?id=CVE-2026-91807
Vendor Advisory
https://www.foxit.com/support/security-bulletins.html
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