CVE-2023-51555

Information disclosure via Doc object out-of-bounds read

Published May 3, 2024 · Updated Aug 2, 2024

Out-of-bounds read in Doc object handling in Foxit PDF Reader 2023.2.0.21408 allows remote attackers to disclose process memory. The parser fails to validate user-controlled Doc object data before reading beyond the end of an allocated object. Exploitation requires a user to open a malicious PDF or visit a malicious page; the standalone flaw exposes process data, while code execution requires chaining.

CVSS severity3.3
Low
EPSS probability0.40%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Out-of-bounds read in Doc object handling in Foxit PDF Reader 2023.2.0.21408 allows remote attackers to disclose process memory. The parser fails to validate user-controlled Doc object data before reading beyond the end of an allocated object. Exploitation requires a user to open a malicious PDF or visit a malicious page; the standalone flaw exposes process data, while code execution requires chaining.

The record

CVE
CVE-2023-51555
Published
May 3, 2024
Updated
Aug 2, 2024
Vendor
Foxit Software
Product
Foxit PDF Reader
Classifications
CWE-125, T1204.002, 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=2023.2.0.21408

What conditions does exploitation require?

Attack vectorlocal
Required privilegesunauthenticated

What is affected?

Foxit Software · Foxit PDF Readerversion=2023.2.0.21408

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.

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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)
Vectorlocal
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-125Out-of-bounds Read
T1204.002User Execution Malicious File
T1203Exploitation for Client Execution

Public exploit references

No public exploit references are available in this record.

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Technologies

Your stack

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Your stack

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