#202020

Adobe Security Bulletin

Last updated on Sep 8, 2026

Security update available for Adobe Acrobat Reader | APSB26-141

Bulletin ID
Date published
Priority
APSB26-141
September 8, 2026
2
style
grid width 12

Summary

Adobe has released a security update for Adobe Acrobat and Reader for Windows and macOS. This update addresses critical, important, and moderate vulnerabilities that could result in arbitrary code execution, privilege escalation, arbitrary file system read, arbitrary file system write, memory exposure, and application denial-of-service.

Adobe is not aware of any exploits in the wild for any of the issues addressed in this update.

Affected Versions

Product
Track
Affected Versions
Platform
Adobe Acrobat
Continuous
26.002.21900 and earlier
Windows & macOS
Acrobat Reader
Continuous
26.002.21900 and earlier
Windows & macOS
Acrobat 2024
Classic 2024
24.001.30383 and earlier
Windows & macOS
style
grid width 12

Solution

Adobe recommends users update their software installations to the latest versions by following the instructions below.

The latest product versions are available to end users via one of the following methods:

For IT administrators (managed environments):

Adobe categorizes these updates with the following priority ratings and recommends users update their installation to the newest version:

Product
Track
Updated versions
Platform
Priority rating
Availability
Adobe Acrobat
Continuous
26.002.21901
Windows and macOS
2
Release Notes
Acrobat Reader
Continuous
26.002.21901
Windows and macOS
2
Release Notes
Acrobat 2024
Classic 2024
24.001.30429
Windows and macOS
2
Release Notes
style
grid width 12

Vulnerability Details

CVE-2026-81996
Vulnerability category: Incorrect Authorization (CWE-863)
Vulnerability impact: Privilege escalation
Severity: Critical
CVSS base score: 8.8
CVSS vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H
CVE-2026-81994
Vulnerability category: Improperly Controlled Modification of Object Prototype Attributes ('Prototype Pollution') (CWE-1321)
Vulnerability impact: Arbitrary file system read
Severity: Critical
CVSS base score: 8.2
CVSS vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:N
CVE-2026-81983
Vulnerability category: Out-of-bounds Write (CWE-787)
Vulnerability impact: Arbitrary code execution
Severity: Critical
CVSS base score: 7.8
CVSS vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
CVE-2026-79907
Vulnerability category: Double Free (CWE-415)
Vulnerability impact: Arbitrary code execution
Severity: Critical
CVSS base score: 7.8
CVSS vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
CVE-2026-79908
Vulnerability category: Out-of-bounds Write (CWE-787)
Vulnerability impact: Arbitrary code execution
Severity: Critical
CVSS base score: 7.8
CVSS vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
CVE-2026-79909
Vulnerability category: Use After Free (CWE-416)
Vulnerability impact: Arbitrary code execution
Severity: Critical
CVSS base score: 7.8
CVSS vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
CVE-2026-80161
Vulnerability category: Access of Resource Using Incompatible Type ('Type Confusion') (CWE-843)
Vulnerability impact: Arbitrary code execution
Severity: Critical
CVSS base score: 7.8
CVSS vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
CVE-2026-81973
Vulnerability category: Use After Free (CWE-416)
Vulnerability impact: Arbitrary code execution
Severity: Critical
CVSS base score: 7.8
CVSS vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
CVE-2026-81975
Vulnerability category: Use After Free (CWE-416)
Vulnerability impact: Arbitrary code execution
Severity: Critical
CVSS base score: 7.8
CVSS vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
CVE-2026-81976
Vulnerability category: Use After Free (CWE-416)
Vulnerability impact: Arbitrary code execution
Severity: Critical
CVSS base score: 7.8
CVSS vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
CVE-2026-81992
Vulnerability category: Heap-based Buffer Overflow (CWE-122)
Vulnerability impact: Arbitrary code execution
Severity: Critical
CVSS base score: 7.8
CVSS vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
CVE-2026-81979
Vulnerability category: Out-of-bounds Write (CWE-787)
Vulnerability impact: Arbitrary code execution
Severity: Critical
CVSS base score: 7.8
CVSS vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
CVE-2026-81980
Vulnerability category: Out-of-bounds Write (CWE-787)
Vulnerability impact: Arbitrary code execution
Severity: Critical
CVSS base score: 7.8
CVSS vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
CVE-2026-81981
Vulnerability category: Out-of-bounds Write (CWE-787)
Vulnerability impact: Arbitrary code execution
Severity: Critical
CVSS base score: 7.8
CVSS vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
CVE-2026-81985
Vulnerability category: Use After Free (CWE-416)
Vulnerability impact: Arbitrary code execution
Severity: Critical
CVSS base score: 7.8
CVSS vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
CVE-2026-81986
Vulnerability category: Use After Free (CWE-416)
Vulnerability impact: Arbitrary code execution
Severity: Critical
CVSS base score: 7.8
CVSS vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
CVE-2026-81987
Vulnerability category: Integer Overflow or Wraparound (CWE-190)
Vulnerability impact: Arbitrary code execution
Severity: Critical
CVSS base score: 7.8
CVSS vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
CVE-2026-81988
Vulnerability category: Use After Free (CWE-416)
Vulnerability impact: Arbitrary code execution
Severity: Critical
CVSS base score: 7.8
CVSS vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
CVE-2026-81989
Vulnerability category: Use After Free (CWE-416)
Vulnerability impact: Arbitrary code execution
Severity: Critical
CVSS base score: 7.8
CVSS vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
CVE-2026-81990
Vulnerability category: Use After Free (CWE-416)
Vulnerability impact: Arbitrary code execution
Severity: Critical
CVSS base score: 7.8
CVSS vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
CVE-2026-81997
Vulnerability category: Incorrect Authorization (CWE-863)
Vulnerability impact: Arbitrary file system write
Severity: Important
CVSS base score: 6.3
CVSS vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:C/C:N/I:H/A:N
CVE-2026-81982
Vulnerability category: Out-of-bounds Read (CWE-125)
Vulnerability impact: Memory exposure
Severity: Important
CVSS base score: 5.5
CVSS vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N
CVE-2026-82001
Vulnerability category: Uncontrolled Resource Consumption (CWE-400)
Vulnerability impact: Application denial-of-service
Severity: Important
CVSS base score: 5.5
CVSS vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
CVE-2026-80160
Vulnerability category: Out-of-bounds Read (CWE-125)
Vulnerability impact: Memory exposure
Severity: Important
CVSS base score: 5.5
CVSS vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N
CVE-2026-80162
Vulnerability category: Use After Free (CWE-416)
Vulnerability impact: Memory exposure
Severity: Important
CVSS base score: 5.5
CVSS vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N
CVE-2026-81977
Vulnerability category: Integer Underflow (Wrap or Wraparound) (CWE-191)
Vulnerability impact: Memory exposure
Severity: Important
CVSS base score: 5.5
CVSS vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N
CVE-2026-81978
Vulnerability category: Out-of-bounds Read (CWE-125)
Vulnerability impact: Memory exposure
Severity: Important
CVSS base score: 5.5
CVSS vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N
CVE-2026-81993
Vulnerability category: Heap-based Buffer Overflow (CWE-122)
Vulnerability impact: Memory exposure
Severity: Important
CVSS base score: 5.5
CVSS vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N
CVE-2026-81984
Vulnerability category: Use After Free (CWE-416)
Vulnerability impact: Memory exposure
Severity: Important
CVSS base score: 5.5
CVSS vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N
CVE-2026-81991
Vulnerability category: Out-of-bounds Read (CWE-125)
Vulnerability impact: Memory exposure
Severity: Important
CVSS base score: 5.5
CVSS vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N
CVE-2026-79910
Vulnerability category: Out-of-bounds Read (CWE-125)
Vulnerability impact: Memory exposure
Severity: Important
CVSS base score: 5.5
CVSS vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N
CVE-2026-80159
Vulnerability category: Untrusted Search Path (CWE-426)
Vulnerability impact: Privilege escalation
Severity: Critical
CVSS base score: 4.0
CVSS vector: CVSS:3.1/AV:L/AC:H/PR:H/UI:R/S:U/C:H/I:N/A:N

Acknowledgements

Adobe would like to thank the following researchers for reporting these issues and for working with Adobe to help protect our customers:

  • Andrea Intilangelo — CVE-2026-80159
  • OmriD-Remedio (omrid) — CVE-2026-81983, CVE-2026-81982
  • Jony (jony_juice) — CVE-2026-79907, CVE-2026-79908
  • Mark Vincent Yason (markyason.github.io) working with Trend Micro Zero Day Initiative — CVE-2026-80161, CVE-2026-81973, CVE-2026-81990, CVE-2026-79909
  • Anonymous working with Trend Micro Zero Day Initiative — CVE-2026-81975, CVE-2026-81976, CVE-2026-81981, CVE-2026-81985, CVE-2026-81986, CVE-2026-81988, CVE-2026-81989, CVE-2026-81977, CVE-2026-81984, CVE-2026-81991
  • Ame (raincandy_u) — CVE-2026-81979
  • NoE9ybCAT (qtuvteqhlv) — CVE-2026-81980
  • Brandon Evans of Trend Micro Zero Day Initiative — CVE-2026-81987
  • NURIHAN KIM (HanTul) working with Trend Micro Zero Day Initiative — CVE-2026-80160, CVE-2026-80162, CVE-2026-81978
  • Kiwan Ko working with TrendAI Zero Day Initiative — CVE-2026-79910

Revisions:

  • June 10, 2026 - Updated download center link.
  • June 12, 2026 - Added CVE-2026-47965.
  • June 15, 2026 - Updated researcher credit for CVE-2026-47952.
  • July 17, 2026 - Added CVE-2026-48373.

NOTE: Adobe has a public bug bounty program with Intigriti. If you are interested in working with Adobe as an external security researcher, please check out https://app.intigriti.com/programs/adobe/adobepublic/detail.

For more information, visit https://www.adobe.com/trust/security/bug-bounty.html, or email PSIRT@adobe.com.

CardTitle
APSB26-141
CardDescription
Priority 2 Security update
CardImage
Adobe
Created
2026-09-08
Tags
caas:content-type/documentation,caas:trust-center/security-bulletin,caas:products/acrobat
PrimaryTag
caas:content-type/article
Details
caas:mnemonics/acrobat
Arbitrary
search: CVE-2026-81996 CVE-2026-81994 CVE-2026-81983 CVE-2026-79907 CVE-2026-79908 CVE-2026-79909 CVE-2026-80161 CVE-2026-81973 CVE-2026-81975 CVE-2026-81976 CVE-2026-81992 CVE-2026-81979 CVE-2026-81980 CVE-2026-81981 CVE-2026-81985 CVE-2026-81986 CVE-2026-81987 CVE-2026-81988 CVE-2026-81989 CVE-2026-81990 CVE-2026-81997 CVE-2026-81982 CVE-2026-82001 CVE-2026-80160 CVE-2026-80162 CVE-2026-81977 CVE-2026-81978 CVE-2026-81993 CVE-2026-81984 CVE-2026-81991 CVE-2026-79910 CVE-2026-80159, search: Adobe Acrobat Reader