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CVE-2021-21056

34
FAUCET Score

CVE-2021-21056 is an Out-of-bounds Read vulnerability in Adobe Framemaker version 2020.0.1 and earlier, affecting both Adobe and Microsoft Windows platforms. This high-severity vulnerability (CVSS 7.8) allows an unauthenticated attacker to achieve arbitrary code execution if a user opens a specially crafted malicious file. While the potential impact is significant, requiring user interaction for exploitation, there is currently no evidence of active exploitation, public exploit code, or significant community discussion surrounding this CVE.

Impacted Technologies

VendorProductVersion(s)CPE
< 2020.0.2CPE matchmatch criteria
cpe:2.3:a:adobe:framemaker:*:*:*:*:*:*:*:*
<= 2020.0.1CPE match
cpe:2.3:a:adobe:framemaker:*:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.0

7.8HIGH

CVSS:3.0/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

Attack Vector
LOCAL
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
REQUIRED
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
Exploitability Score
1.8
Impact Score
5.9
CvssVersion
3.0

Exploit Intelligence

EPSS Score
21.22%
Probability of exploitation in next 30 days
EPSS Percentile
97.3%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.2122 is in the 98th percentile among its peer group of 11,616 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.1 Reddit, 0.1 Bluesky, 0.0 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 0.0 Security Researcher mentions.

Remediation

Patch Available

Vendor Patches (1)

adobepatch availablevia nvd_reference
View patch

References

helpx.adobe.com / security/products/framemaker/apsb21-14.html
PatchVendor Advisory
zerodayinitiative.com / advisories/ZDI-21-282
Third Party Advisory