NVD / CVE Program· CNA Foxit

CVE-2025-66493: Foxit PDF Reader AcroForm Use-After-Free Remote Code Execution Vulnerability

Noroxi assessment

Priority: Monitor (action score 31/100)

The sources we track (CISA KEV, Exploit-DB, Metasploit, Nuclei, GitHub) show no public exploit code or exploitation in the wild.
Probability of exploitation in the next 30 days: 0.30% (FIRST EPSS).
Someone with local access to the system can trigger it. No account or password is required. A user must open a link or visit a page. No special conditions are required; it is repeatable.
According to the record, no fixed version is available yet.

Low priority for now. Update when a fix is released; follow the vendor's advisory.

Generated automatically from the record's data: CVSS (NVD and CNA), CISA KEV and SSVC, FIRST EPSS, exploit sources, fixed versions. How we calculate it

Primary sources: NVD · CVE.org · FIRST EPSS

A use-after-free vulnerability exists in the AcroForm handling of Foxit PDF Reader and Foxit PDF Editor before 2025.2.1,14.0.1 and 13.2.1 on Windows . When opening a PDF containing specially crafted JavaScript, a pointer to memory that has already been freed may be accessed or dereferenced, potentially allowing a remote attacker to execute arbitrary code.

HighCVSS 7.8 · v3.1—No exploit No fix recorded

Published: Dec 19, 2025
Updated: Jun 17, 2026
EPSS: 0.3% · 23th percentile
CWE: CWE-416

Report tools

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Action score

Monitor

Low priority for now.

CVSS: 31 / 40 · 7.8 / 10
CISA KEV: 0 / 30 · Not listed
EPSS: 0 / 30 · 0.3%

CISA SSVC decision

Exploitation: none
Automatable: no
Technical impact: total

Vulnrichment: CISA's decision-tree inputs.

CNA vs NVD score

NVD: —
CNA · Foxit: 7.8; NVD has not scored this yet; the score shown is the CNA’s.

The score given by the assigning authority versus NVD’s independent score. A gap means the severity is contested.

Get told when this record changes

Not in KEV: no record of exploitation in the wild
No public exploit code on record
No fixed version yet

If any of these changes, we'll tell you in the daily email digest.

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Noroxi analysis

What does it mean in your environment?

The assessment above is generated automatically from the record's data; it doesn't know your environment. Our team verifies on your systems whether this vulnerability is actually exploitable and which mitigation is enough.

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Affected systems

Is your version affected?

Pick the product and type the version you run. It's compared with this record's version ranges in your browser; the version isn't sent anywhere.

Vendor	Product	CPE
foxit	pdf editor	cpe:2.3:a:foxit:pdf_editor
foxit	pdf reader	cpe:2.3:a:foxit:pdf_reader
microsoft	windows	cpe:2.3:o:microsoft:windows

Affected versions

NVD version ranges (for catalog products). Add the product to your stack with a version and matching uses these.

foxit pdf editorup to 13.2.1.23955 inclusive
foxit pdf editor14.0.0.33046 and later · up to 14.0.1.33197 inclusive
foxit pdf editor2023.1.0.15510 and later · up to 2023.3.0.23028 inclusive
foxit pdf editor2024.1.0.23997 and later · up to 2024.4.1.27687 inclusive
foxit pdf editor2025.1.0.27937 and later · up to 2025.2.1.33197 inclusive
foxit pdf readerup to 2025.2.1.33197 inclusive

Versions reported by the vendor

Affected version ranges reported by the assigning authority (Foxit). Independent of NVD's CPE analysis and usually ahead of it.

Foxit Software Inc. Foxit PDF Editor
- Versions 2025.2.1 and earlier, Versions 14.0.1 and earlier, Versions 13.2.1 and earlieraffected
Foxit Software Inc. Foxit PDF Reader
- Versions 2025.2.1 and earlier, Versions 14.0.1 and earlier, Versions 13.2.1 and earlieraffected

Same product

foxit: all records

Other highest-scoring records for the same primary product.

CVE-2023-27363Foxit PDF Reader exportXFAData Exposed Dangerous Method Remote Code Execution Vulnerability
44Plan
CVE-2024-25938A use-after-free vulnerability exists in the way Foxit Reader 2024.1.0.23997 handles a Barcode widget.
40Plan
CVE-2024-25648A use-after-free vulnerability exists in the way Foxit Reader 2024.1.0.23997 handles a ComboBox widget.
40Plan

Published before and after this one in the same product

← EarlierCVE-2025-59803Dec 11, 2025 · Foxit PDF Editor and Reader before 2025.2.1 allow signature spoofing via triggers.
21Monitor
← EarlierCVE-2025-13941Dec 18, 2025 · Foxit PDF Reader Update Service Incorrect Permission Assignment Local Privilege Escalation Vulnerability
35Monitor
Later →CVE-2025-66494Dec 19, 2025 · Foxit PDF Reader PDF File Parsing Use-After-Free Remote Code Execution Vulnerability
31Monitor

Remediation

Which version to upgrade to

Fix versions compiled from the vendor, package registries and Microsoft. Verify the vendor's note before upgrading.

No fix version is recorded for this entry. Check the references for vendor advisories.

Exploit status

No known public exploit

No public exploit has been observed yet. That doesn't mean you're safe, only that the bar is a little higher.

Research context

For pentesters and researchers: attack profile, score disagreement, timeline, patch commits, credits, variant and chain candidates, bug bounty scope. All derived from existing data; no exploit code.

Timeline

From publication to today: proof of concept, Metasploit module, CISA KEV and fix record. Dates are as reported by the sources.

No dated events beyond publication.

No history yet (it accumulates with the daily EPSS job).

Patch and commit links

Commit, PR and diff links among the references. A starting point for patch-diffing and variant hunting; fixes, not exploits.

No commit or PR link among the references.

Credits

All researchers

Finders, reporters and analysts named in the CNA record. Click a name for that researcher’s other records.

Anonymous working with Trend Micro Zero Day Initiativefinder

Variant candidates

Same product, same weakness class, within 18 months. If the patch missed the root cause, the sibling bug is here.

CVE-2024-47810366 days apartA use-after-free vulnerability exists in the way Foxit Reader 2024.3.0.26795 handles a 3D page object.
35Monitor
CVE-2024-49576366 days apartA use-after-free vulnerability exists in the way Foxit Reader 2024.3.0.26795 handles a checkbox CBF_Widget object.
35Monitor
CVE-2024-9254392 days apartFoxit PDF Reader Annotation Use-After-Free Remote Code Execution Vulnerability
35Monitor
CVE-2024-7723485 days apartFoxit PDF Reader AcroForm Use-After-Free Remote Code Execution Vulnerability
35Monitor
CVE-2024-7724485 days apartFoxit PDF Reader AcroForm Use-After-Free Remote Code Execution Vulnerability
35Monitor
CVE-2024-7725485 days apartFoxit PDF Reader AcroForm Use-After-Free Remote Code Execution Vulnerability
35Monitor

Chain candidates

An authentication bypass and a privilege-requiring bug in the same product, published close together: combined they may become an unauthenticated path.

—

Bug bounty scope

No known public program.

Source: bounty-targets-data (public HackerOne, Bugcrowd, Intigriti, YesWeHack listings).

Technical details

Attack conditions

Someone with local access to the system can trigger it.
No account or password is required.
A user must open a link or visit a page.
No special conditions are required; it is repeatable.

If successful

Confidentiality: high · data can be read
Integrity: high · data or configuration can be modified
Availability: high · the service can be disrupted

Attack vector: Local
Attack complexity: Low
Privileges required: None
User interaction: Required
Scope: Unchanged
Confidentiality impact: High
Integrity impact: High
Availability impact: High

Weakness class (CWE)

CWE-416 · Use After Free

CVSS vector

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

nvd-secondary

Root cause

After a memory region is freed, another reference pointing to it is still used. By then, the same region may have been allocated for different data.

The bug in code

The whole CWE-416 class

A representative example of this vulnerability class. Not the vendor's source code; it shows the faulty pattern and its fix.

Vulnerable

1free(dev->buf);
2/* ... another thread is still running ... */
3process(dev->buf);

Fixed

1lock(&dev->lock);
2free(dev->buf);
3dev->buf = NULL;
4unlock(&dev->lock);

Attack context

MITRE CAPEC attack patterns and ATT&CK techniques for this weakness class (CWE). A starting point for detection rules and threat hunting.

MITRE has no CAPEC/ATT&CK mapping for this CWE.

Change log

No changes recorded on tracked fields yet. Score, KEV, exploit maturity and fix status changes appear here.

References

www.foxit.com/support/security-bulletins.html

Vendor advisories and official records. Exploit/PoC links are deliberately left out.

All records