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CVE-2021-21053: Adobe Illustrator Out-Of-Bounds Write Vulnerability Could Lead To Remote Code Execution

• Severity: high (CVSS 7.8 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 2.3% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2021-02-11 · updated 2026-06-17
• Weakness: CWE-787

Description

Adobe Illustrator version 25.1 (and earlier) is affected by an Out-of-bounds Write vulnerability when parsing a crafted file. An unauthenticated attacker could leverage this vulnerability to achieve arbitrary code execution in the context of the current user. Exploitation of this issue requires user interaction in that a victim must open a malicious file.

Affected products

• Adobe Illustrator: through 25.1

References

• https://helpx.adobe.com/security/products/illustrator/apsb21-12.html
• https://helpx.adobe.com/security/products/illustrator/apsb21-12.html

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