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CVE-2021-35986: Adobe Acrobat Pro DC getAnnot Type Confusion Information Disclosure Vulnerability

• Severity: medium (CVSS 4.3 v2.0)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 2.7% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2021-08-20 · updated 2026-06-17
• Weakness: CWE-843

Description

Acrobat Reader DC versions 2021.005.20054 (and earlier), 2020.004.30005 (and earlier) and 2017.011.30197 (and earlier) are affected by an Type Confusion vulnerability. An unauthenticated attacker could leverage this vulnerability to read arbitrary system information 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 Acrobat DC: from 15.008.20082 through 21.005.20054; from 17.011.30059 through 17.011.30197; from 20.001.30005 through 20.004.30005
• Adobe Acrobat Reader: from 15.008.20082 through 21.005.20054; from 17.011.30059 through 17.011.30197; from 20.001.30005 through 20.004.30005

References

• https://helpx.adobe.com/security/products/acrobat/apsb21-51.html
• https://www.zerodayinitiative.com/advisories/ZDI-21-1145/
• https://helpx.adobe.com/security/products/acrobat/apsb21-51.html
• https://www.zerodayinitiative.com/advisories/ZDI-21-1145/

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