CVE-2026-47923

Sensitive memory disclosure via Doc object overread

Published Jun 9, 2026 · Updated Jun 9, 2026

Out-of-bounds read in Adobe Acrobat Reader 26.001.21651 and earlier allows remote attackers to disclose sensitive memory via a crafted PDF. The Doc object handler fails to validate user-supplied data before reading past the end of an allocated object. Exploitation requires a victim to open a malicious file or visit a malicious page; the standalone impact is memory disclosure, while code execution requires chaining with another flaw.

CVSS severity5.5
Medium
EPSS probability0.28%
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 Adobe Acrobat Reader 26.001.21651 and earlier allows remote attackers to disclose sensitive memory via a crafted PDF. The Doc object handler fails to validate user-supplied data before reading past the end of an allocated object. Exploitation requires a victim to open a malicious file or visit a malicious page; the standalone impact is memory disclosure, while code execution requires chaining with another flaw.

The record

CVE
CVE-2026-47923
Published
Jun 9, 2026
Updated
Jun 9, 2026
Vendor
Adobe
Product
Adobe Acrobat Reader
Classifications
CWE-125, CAPEC-540, T1204.002
Attack vector
local
Privileges
unauthenticated

Timeline

How it unfolded

  1. Jun 9, 2026CVE publishedPublication date reported by the CVE source.
  2. Jun 9, 2026Record 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=0 <=26.001.21651

What conditions does exploitation require?

Attack vectorlocal
Required privilegesunauthenticated

What is affected?

Adobe · Adobe Acrobat Readerversion=0 <=26.001.21651

Published CVSS scores

5.5AdobeCVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N
3.3TrendAI Zero Day InitiativeCVSS:3.1/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-125Out-of-bounds Read
CAPEC-540Overread Buffers
T1204.002User Execution: Malicious File

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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