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Vulnerabilities

Vulnerability · CVE-2025-66499

A heap-based buffer overflow vulnerability exists in the PDF parsing of Foxit PDF Reader when processing specially crafted JBIG2 data.

Published Dec 19, 2025 · catalog updated Dec 19, 2025 · Foxit Software Inc. Foxit PDF Editor

Last checked Nov 2, 2026. A connected source was read within the last 7 days.

Check if you run it

No confirmed exploitation is on record for CVE-2025-66499. EPSS is 0.30%. Act only if a listed version of Foxit Software Inc. Foxit 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
High7.8
Known exploitation
Not in CISA/VulnCheck KEV
EPSS
0.30%
Remediation
Advisory link
Affected products
vendor Foxit Software Inc. Foxit PDF Editor Versions 2025.2.1 and earlier

A heap-based buffer overflow vulnerability exists in the PDF parsing of Foxit PDF Reader when processing specially crafted JBIG2 data. An integer overflow in the calculation of the image buffer size may occur, potentially allowing a remote attacker to execute arbitrary code.

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.

  • vendor Foxit Software Inc. Foxit PDF Editor Versions 2025.2.1 and earlierVersions 2025.2.1 and earlier

How to fix CVE-2025-66499

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-2025-66499. EPSS is 0.30%. Act only if a listed version of Foxit Software Inc. Foxit PDF Editor is installed.

Which versions are affected?

Compare what you have installed with Foxit Software Inc. Foxit PDF Editor Versions 2025.2.1 and earlier Versions 2025.2.1 and earlier. Compare the installed version with the linked vendor advisory before you change production.

What should an analyst verify?

No weakness class is stored. EPSS 0.30%. 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. Dec 19, 2025 · EUVD

    Detected

    A heap-based buffer overflow vulnerability exists in the PDF parsing of Foxit PDF Reader when processing specially crafted JBIG2 data. An integer overflow in the calculation of the image buffer size may occur, potentially allowing a remote attacker to execute arbitrary code.

  2. Dec 19, 2025 · EUVD

    Updated

    A heap-based buffer overflow vulnerability exists in the PDF parsing of Foxit PDF Reader when processing specially crafted JBIG2 data. An integer overflow in the calculation of the image buffer size may occur, potentially allowing a remote attacker to execute arbitrary code.

Sources

  • CVE.orgVulnerability recordCVE-2025-66499

    Official CVE identifier

    cve.org
  • FIRST EPSSExploitation probabilityCVE-2025-66499

    30-day exploitation probability 0.30%

    first.org
  • EUVDVulnerability recordEUVD-2025-204461

    A heap-based buffer overflow vulnerability exists in the PDF parsing of Foxit PDF Reader when processing specially crafted JBIG2 data. An integer overflow in the calculation of the image buffer size may occur, potentially allowing a remote attacker to execute arbitrary code.

    euvd.enisa.europa.eu

References

Freshness

Last verified in this catalog Nov 2, 2026. Significant claims (KEV, EPSS, CVSS, affected ranges) come from the source rows above — open the original publisher for the authoritative advisory.

  • FIRST EPSSNov 2, 2026
  • CVE.orgNov 2, 2026
  • EUVDNov 1, 2026