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Vulnerabilities

Vulnerability · CVE-2026-91798

A local privilege escalation vulnerability exists in the update daemon of Foxit PDF Editor/Reader due to an insecure permission configuration that allows the configura…

Published Sep 23, 2026 · catalog updated Oct 29, 2026 · pdf editor

Last checked Oct 29, 2026. A connected source was read within the last 7 days.

Check if you run it

No confirmed exploitation is on record for CVE-2026-91798. EPSS is 0.15%. Act only if a listed version of pdf editor is installed.

Gaps on this record

  • No vendor fix or required action is stored. Compare the linked advisory before you change production.

Same product and reporting

Severity
High8.8
Known exploitation
Not in CISA/VulnCheck KEV
EPSS
0.15%
Remediation
Version ranges on file
Affected products
cpe foxit/pdf editor · cpe foxit/pdf reader

A local privilege escalation vulnerability exists in the update daemon of Foxit PDF Editor/Reader due to an insecure permission configuration that allows the configuration file to be modified by regular users, which may lead to arbitrary script execution with higher privileges.

Are you affected?

Enter the version you run. The result uses only the ranges stored on this record.

The check returns affected, not affected, or incomplete. It does not guess a version that is missing from the record.

  • cpe foxit/pdf editor<= 13.2.6.24111
  • cpe foxit/pdf editor<= 13.2.6.63484
  • cpe foxit/pdf editor>= 14.0.0.33046, <= 14.0.7.33751
  • cpe foxit/pdf editor>= 2023.1.0.15510, <= 2023.3.0.23028
  • cpe foxit/pdf editor>= 2024.1.0.23997, <= 2024.4.1.27687
  • cpe foxit/pdf editor>= 2025.1.0.27937, <= 2025.3.0.35737
  • cpe foxit/pdf editor>= 2026.1.0.36452, <= 2026.2.0.39747
  • cpe foxit/pdf reader<= 2026.2.0.39747

How to fix CVE-2026-91798

  • Upgrade

    CVE-2026-91798 lists a fix boundary at 13.2.6.24111. Compare the installed build with that boundary before you change production.

  • Version check

    Affected <= 13.2.6.24111

  • Advisory

    Open the nvd record and follow its fix.

  • Official advisories

What to do

Three questions, each answered from this record only. Confirm the vendor advisory before you patch.

Should you patch?

No confirmed exploitation is on record for CVE-2026-91798. EPSS is 0.15%. Act only if a listed version of pdf editor is installed.

Which versions are affected?

Compare what you have installed with foxit/pdf editor <= 13.2.6.24111; foxit/pdf editor <= 13.2.6.63484; foxit/pdf editor >= 14.0.0.33046, <= 14.0.7.33751; foxit/pdf editor >= 2023.1.0.15510, <= 2023.3.0.23028. Compare the installed version with the linked vendor advisory before you change production.

What should an analyst verify?

CWE-732: Incorrect Permission Assignment for Critical Resource. EPSS 0.15%. There is no CISA KEV listing. No Exploit-DB or Metasploit reference is linked. Use the source links for the original advisory.

Code

The project this record applies to. Exploit listings stay in References.

No public source repository is identified for this product.

Timeline

Detection, updates, and resolution for this record.

  1. Sep 23, 2026 · NIST NVD

    Detected

    A local privilege escalation vulnerability exists in the update daemon of Foxit PDF Editor/Reader due to an insecure permission configuration that allows the configuration file to be modified by regular users, which may lead to arbitrary script execution with higher privileges.

  2. Oct 29, 2026 · NIST NVD

    Updated

    A local privilege escalation vulnerability exists in the update daemon of Foxit PDF Editor/Reader due to an insecure permission configuration that allows the configuration file to be modified by regular users, which may lead to arbitrary script execution with higher privileges.

Sources

  • NIST NVDVulnerability recordCVE-2026-91798

    A local privilege escalation vulnerability exists in the update daemon of Foxit PDF Editor/Reader due to an insecure permission configuration that allows the configuration file to be modified by regular users, which may lead to arbitrary script execution with higher privileges.

    nvd.nist.gov

References

Freshness

Last verified in this catalog Oct 29, 2026. Significant claims (KEV, EPSS, CVSS, affected ranges) come from the source rows above — open the original publisher for the authoritative advisory.

  • NIST NVDOct 29, 2026