CVE-2021-21017

high-risk
Published 2021-02-11

Acrobat Reader DC versions versions 2020.013.20074 (and earlier), 2020.001.30018 (and earlier) and 2017.011.30188 (and earlier) are affected by a heap-based buffer overflow vulnerability. 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.

Do I need to act?

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90.6% chance of exploitation in next 30 days
EPSS score — higher than 9% of all CVEs
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CISA KEV: actively exploited in the wild
On the Known Exploited Vulnerabilities catalog — federal agencies must patch
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Patch status unknown
Check vendor advisories for fix availability and mitigation guidance
8
CVSS 8.8/10 High
NETWORK / LOW complexity

Affected Products (4)

Affected Vendors

Adobe

References (3)

Vendor Advisory https://helpx.adobe.com/security/products/acrobat/apsb21-09.html
Vendor Advisory https://helpx.adobe.com/security/products/acrobat/apsb21-09.html
Third Party Advisory https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2021-...
67
/ 100
high-risk
Severity 30/34 · Critical
Exploitability 27/34 · High
Exposure 10/34 · Low