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© 2026 FAUCET Technologies LLC. All rights reserved.

CVE-2021-21035

28
FAUCET Score

CVE-2021-21035 is a Use After Free vulnerability affecting Adobe Acrobat Reader DC versions 2020.013.20074 and earlier, 2020.001.30018 and earlier, and 2017.011.30188 and earlier, impacting Adobe, Apple, and Microsoft platforms. This high-severity vulnerability (CVSS 8.8) allows an unauthenticated attacker to achieve arbitrary code execution with user interaction, typically by opening a malicious file. While no active exploitation, public exploit code, or significant community discussion has been observed, the FAUCET Risk Score of 87/100 indicates a notable potential risk.

Impacted Technologies

VendorProductVersion(s)CPE
>= 17.0, <= 17.011.30188CPE matchmatch criteria
cpe:2.3:a:adobe:acrobat:*:*:*:*:classic:*:*:*
>= 20.0, <= 20.001.30018CPE matchmatch criteria
cpe:2.3:a:adobe:acrobat:*:*:*:*:classic:*:*:*
<= 20.013.20074CPE matchmatch criteria
cpe:2.3:a:adobe:acrobat_dc:*:*:*:*:continuous:*:*:*
>= 17.0, <= 17.011.30188CPE matchmatch criteria
cpe:2.3:a:adobe:acrobat_reader:*:*:*:*:classic:*:*:*
>= 20.0, <= 20.001.300183CPE matchmatch criteria
cpe:2.3:a:adobe:acrobat_reader:*:*:*:*:classic:*:*:*

CVSS Data

CVSS version used by this source: 3.0

8.8HIGH

CVSS:3.0/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
3.0

Exploit Intelligence

EPSS Score
3.98%
Probability of exploitation in next 30 days
EPSS Percentile
89.4%
Percentile rank of EPSS score among Peer Group
As of 2026-07-28
Model: v2026.06.15
This CVE's current EPSS score of 0.0398 is in the 89th 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/apsb21-09.html
Vendor Advisory