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CVE-2021-28564

29
FAUCET Score

CVE-2021-28564 is an Out-of-bounds Write vulnerability in the ImageTool component of Adobe Acrobat Reader DC, affecting versions 2021.001.20150 and earlier, 2020.001.30020 and earlier, and 2017.011.30194 and earlier, across Adobe, Apple, and Microsoft platforms. This high-severity vulnerability (CVSS 8.8) allows an unauthenticated attacker to achieve arbitrary code execution in the context of the current user, requiring user interaction to open a malicious file. While the vulnerability has a high FAUCET Risk Score of 95/100 and a notable EPSS score, there is currently no evidence of active exploitation, public exploit code (Metasploit, Nuclei, ExploitDB), or significant community discussion or media coverage.

Impacted Technologies

VendorProductVersion(s)CPE
<= 2017.011.30194CPE match
cpe:2.3:a:adobe:acrobat_reader:*:*:*:*:*:*:*:*
<= 2020.001.30020CPE match
cpe:2.3:a:adobe:acrobat_reader:*:*:*:*:*:*:*:*
<= 2021.001.20150CPE match
cpe:2.3:a:adobe:acrobat_reader:*:*:*:*:*:*:*:*
>= 15.008.20082, <= 21.001.20150CPE matchmatch criteria
cpe:2.3:a:adobe:acrobat_dc:*:*:*:*:continuous:*:*:*
>= 15.008.20082, <= 21.001.20150CPE matchmatch criteria
cpe:2.3:a:adobe:acrobat_reader_dc:*:*:*:*:continuous:*:*:*

CVSS Data

CVSS version used by this source: 3.1

8.8HIGH

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

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
REQUIRED
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
Exploitability Score
2.8
Impact Score
5.9
CvssVersion
3.1

Exploit Intelligence

EPSS Score
3.53%
Probability of exploitation in next 30 days
EPSS Percentile
88.0%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0353 is in the 87th percentile among its peer group of 14,875 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.1 Reddit, 0.2 Bluesky, 0.1 Mastodon, and 0.2 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.3 InfoSec Media, 0.0 Vendor Blog, and 0.1 Security Researcher mentions.

Remediation

Vendor Patches (1)

adobevendor investigatingvia nvd_reference
View patch

References

helpx.adobe.com / security/products/acrobat/apsb21-29.html
Release NotesVendor Advisory