CVE-2024-28888Public exploitNetwork attack vector

Code execution via freed checkbox field reuse

Published Oct 2, 2024 · Updated Sep 23, 2025

Use-after-free in Foxit PDF Reader 2024.1.0.23997 allows context-dependent attackers to execute code through a crafted PDF. The checkbox Calculate callback invokes deletePages(), which frees page-associated objects, before addField continues using the freed checkbox object without validation. Exploitation requires a user to open the malicious PDF, or to visit a malicious site with the browser extension enabled, and code runs in the reader process.

CVSS severity8.8
High
EPSS probability2.08%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Use-after-free in Foxit PDF Reader 2024.1.0.23997 allows context-dependent attackers to execute code through a crafted PDF. The checkbox Calculate callback invokes deletePages(), which frees page-associated objects, before addField continues using the freed checkbox object without validation. Exploitation requires a user to open the malicious PDF, or to visit a malicious site with the browser extension enabled, and code runs in the reader process.

The record

CVE
CVE-2024-28888
Published
Oct 2, 2024
Updated
Sep 23, 2025
Vendor
Foxit Software
Product
Foxit PDF Reader
Classifications
CWE-416, T1203, T1204.002
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Oct 2, 2024CVE publishedPublication date reported by the CVE source.
  2. Sep 23, 2025Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=2024.1.0.23997

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Foxit Software · Foxit PDF Readerversion=2024.1.0.23997

Published CVSS scores

8.8Cisco TalosCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

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No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-416Use After Free
T1203Exploitation for Client Execution
T1204.002User Execution Malicious File

Public exploit references

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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