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CVE-2021-28643

16
FAUCET Score

CVE-2021-28643 is a Type Confusion vulnerability affecting Adobe Acrobat Reader DC versions 2021.005.20054 and earlier, 2020.004.30005 and earlier, and 2017.011.30197 and earlier. This vulnerability has a low CVSS score of 3.3, requiring user interaction to open a malicious file for an unauthenticated attacker to disclose sensitive memory information. There is no evidence of active exploitation, publicly available exploit code, or significant community discussion or media coverage for this CVE.

Impacted Technologies

VendorProductVersion(s)CPE
<= 2017.011.30197CPE match
cpe:2.3:a:adobe:acrobat_reader:*:*:*:*:*:*:*:*
<= 2020.004.30005CPE match
cpe:2.3:a:adobe:acrobat_reader:*:*:*:*:*:*:*:*
<= 2021.005.20054CPE match
cpe:2.3:a:adobe:acrobat_reader:*:*:*:*:*:*:*:*
>= 15.008.20082, <= 21.005.20054CPE matchmatch criteria
cpe:2.3:a:adobe:acrobat_dc:*:*:*:*:continuous:*:*:*
>= 17.011.30059, <= 17.011.30197CPE matchmatch criteria
cpe:2.3:a:adobe:acrobat_dc:*:*:*:*:classic:*:*:*

CVSS Data

CVSS version used by this source: 3.1

3.3LOW

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

Attack Vector
LOCAL
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
REQUIRED
Scope
UNCHANGED
Confidentiality Impact
LOW
Integrity Impact
NONE
Availability Impact
NONE
Exploitability Score
1.8
Impact Score
1.4
CvssVersion
3.1

Exploit Intelligence

EPSS Score
1.92%
Probability of exploitation in next 30 days
EPSS Percentile
77.7%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0192 is in the 87th percentile among its peer group of 577 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.1 Bluesky, 0.0 Mastodon, and 0.0 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.1 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Vendor Patches (1)

adobevendor investigatingvia nvd_reference
View patch

References

helpx.adobe.com / security/products/acrobat/apsb21-51.html
Release NotesVendor Advisory