AEGLIX vulnerability intelligence
CVE-2021-21017
HIGH · CVSS 8.8 · Analyzed
Published: 2021-02-11 · Updated: 2026-06-17 · Source: NVD
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Vulnerability overview
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.
Severity and scoring
- CVSS score
- 8.8 · HIGH
- CVSS version
- 3.1
- CVSS vector
- CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
- Weaknesses
- CWE-122, CWE-787
CVSS measures technical severity; it does not establish whether this vulnerability is being exploited in your environment.
Known exploitation and remediation
Listed in CISA’s Known Exploited Vulnerabilities catalog.
- Affected product
- Adobe · Acrobat and Reader
- Added to catalog
- 2021-11-03
- Required action
- Apply updates per vendor instructions.
- CISA remediation due date
- 2021-11-17
CISA deadlines apply to the organizations covered by its directives. Confirm your own remediation requirements.
Verify affected versions and patch availability in the vendor advisory before making changes.
Affected products and versions
cpe:2.3:a:adobe:acrobat:*:*:*:*:classic:*:*:*
From (inclusive): 17.0
Through (inclusive): 17.011.30188
cpe:2.3:a:adobe:acrobat:*:*:*:*:classic:*:*:*
From (inclusive): 20.0
Through (inclusive): 20.001.30018
cpe:2.3:a:adobe:acrobat_dc:*:*:*:*:continuous:*:*:*
Through (inclusive): 20.013.20074
cpe:2.3:a:adobe:acrobat_reader:*:*:*:*:classic:*:*:*
From (inclusive): 17.0
Through (inclusive): 17.011.30188
cpe:2.3:a:adobe:acrobat_reader:*:*:*:*:classic:*:*:*
From (inclusive): 20.0
Through (inclusive): 20.001.300183
cpe:2.3:a:adobe:acrobat_reader_dc:*:*:*:*:continuous:*:*:*
Through (inclusive): 20.013.20074
These are NVD CPE applicability entries. Some products depend on configuration conditions; consult the official record to confirm applicability.
Advisories and references
- https://helpx.adobe.com/security/products/acrobat/apsb21-09.html
Vendor Advisory
- https://helpx.adobe.com/security/products/acrobat/apsb21-09.html
Vendor Advisory
- https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2021-21017
Third Party Advisory · US Government Resource