CVE-2021-28643 - CVE House
Back to Database
Status published Low CVE-2021-28643

Adobe Acrobat Pro DC embedDocAsDataObject Type Confusion Information Disclosure Vulnerability

Vulnerability Description

Acrobat Reader DC versions 2021.005.20054 (and earlier), 2020.004.30005 (and earlier) and 2017.011.30197 (and earlier) are affected by a Type Confusion vulnerability. An unauthenticated attacker could leverage this vulnerability to disclose sensitive memory information in the context of the current user. Exploitation of this issue requires user interaction in that a victim must open a malicious file.

Impact Analysis

Refer to official advisory for detailed impact metrics.

Remediation

Ensure systems are updated to the latest vendor-supplied patch levels.

THREAT MONITOR

Am I Vulnerable?

Launch our assessment wizard to check if your infrastructure is exposed to • CVE-2021-28643

Credits & Attribution

No credits recorded in the NVD database.

References

More from Adobe

View All →
CVE-2025-64899
Acrobat Reader | Out-of-bounds Read (CWE-125)
High 7.8
CVE-2025-64898
ColdFusion | Insufficiently Protected Credentials (CWE-522)
Medium 5.3
CVE-2025-64897
ColdFusion | Improper Access Control (CWE-284)
Medium 5.6
CVE-2025-64896
Creative Cloud Desktop | Creation of Temporary File in Directory with Incorrect Permissions (CWE-379)
Medium 5.5
CVE-2025-64894
DNG SDK | Integer Overflow or Wraparound (CWE-190)
Medium 5.5

Affected Vendor

Affected Software

Acrobat Reader
Vulnerable Versions:
unspecified

Timeline

Official Publish: August 20th, 2021
Last Modified: September 16th, 2024
Added to House: July 21st, 2026

CVSS Vectors

V3: CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:N

Weaknesses (CWE)

CWE-843

MITRE ATT&CK TTPs

T1190 Exploit Public-Facing Application
Initial Access
T1068 Exploitation for Privilege Escalation
Privilege Escalation
T1055 Process Injection
Defense Evasion
T1105 Ingress Tool Transfer
Command and Control
T1499 Endpoint Denial of Service
Impact