CVE-2023-42093

Information disclosure via stale Annotation object access

Published May 3, 2024 · Updated Aug 2, 2024

Use-after-free in Foxit PDF Reader 12.1.3.15356 and PDF Editor 11.2.7.53812 and earlier allows attackers to disclose data via a crafted PDF. Annotation-object handling performs operations without first validating that the referenced object still exists, causing access to freed storage. A target must visit a malicious page or open the file; the disclosure supports code execution only when combined with another vulnerability.

CVSS severity3.3
Low
EPSS probability0.50%
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 12.1.3.15356 and PDF Editor 11.2.7.53812 and earlier allows attackers to disclose data via a crafted PDF. Annotation-object handling performs operations without first validating that the referenced object still exists, causing access to freed storage. A target must visit a malicious page or open the file; the disclosure supports code execution only when combined with another vulnerability.

The record

CVE
CVE-2023-42093
Published
May 3, 2024
Updated
Aug 2, 2024
Vendor
Foxit Software
Product
Foxit PDF Reader
Classifications
CWE-416, T1203
Attack vector
local
Privileges
unauthenticated

Timeline

How it unfolded

  1. May 3, 2024CVE publishedPublication date reported by the CVE source.
  2. Aug 2, 2024Record 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=12.1.3.15356

What conditions does exploitation require?

Attack vectorlocal
Required privilegesunauthenticated

What is affected?

Foxit Software · Foxit PDF Readerversion=12.1.3.15356
Foxit Software · Foxit PDF Editorversion=- <=10.1.12.37872; version=11.0.0 <=11.2.7.53812

Published CVSS scores

3.3Zero Day InitiativeCVSS:3.0/AV:L/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:N

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.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

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

Weakness, pattern, technique

CWE-416Use After Free
T1203Exploitation for Client Execution

Public exploit references

No public exploit references are available in this record.

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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