SB20260518101 - Multiple vulnerabilities in Adobe Illustrator



SB20260518101 - Multiple vulnerabilities in Adobe Illustrator

Published: May 18, 2026

Security Bulletin ID SB20260518101
CSH Severity
High
Patch available
YES
Number of vulnerabilities 4
Exploitation vector Remote access
Highest impact Code execution

Breakdown by Severity

High 50% Medium 25% Low 25%
  • Low
  • Medium
  • High
  • Critical

Description

This security bulletin contains information about 4 vulnerabilities.


1) Out-of-bounds write (CVE-ID: CVE-2026-34661)

CWE-ID: CWE-787 - Out-of-bounds write

CVSSv4: CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:A/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Amber


The vulnerability allows a remote attacker to execute arbitrary code.

The vulnerability exists due to out-of-bounds write in Adobe Illustrator when parsing a crafted file. A remote attacker can trick the victim into opening a specially crafted file to execute arbitrary code.

User interaction is required to open a crafted file.


2) NULL pointer dereference (CVE-ID: CVE-2026-34662)

CWE-ID: CWE-476 - NULL Pointer Dereference

CVSSv4: CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:A/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:U/U:Clear


The vulnerability allows a remote attacker to cause a denial of service.

The vulnerability exists due to null pointer dereference in Adobe Illustrator when parsing a crafted file. A remote attacker can trick the victim into opening a specially crafted file to cause a denial of service.

User interaction is required to open a crafted file.


3) Out-of-bounds read (CVE-ID: CVE-2026-34663)

CWE-ID: CWE-125 - Out-of-bounds read

CVSSv4: CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:A/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N/E:U/U:Green


The vulnerability allows a remote attacker to disclose sensitive information.

The vulnerability exists due to out-of-bounds read in Adobe Illustrator when parsing a crafted file. A remote attacker can trick the victim into opening a specially crafted file to disclose sensitive information.

User interaction is required to open a crafted file.


4) Heap-based buffer overflow (CVE-ID: CVE-2026-34687)

CWE-ID: CWE-122 - Heap-based Buffer Overflow

CVSSv4: CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:A/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Amber


The vulnerability allows a remote attacker to execute arbitrary code.

The vulnerability exists due to heap-based buffer overflow in Adobe Illustrator when parsing a crafted file. A remote attacker can trick the victim into opening a specially crafted file to execute arbitrary code.

User interaction is required to open a crafted file.


Remediation

Install update from vendor's website.