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CVE-2023-26421

27
FAUCET Score

CVE-2023-26421 is an Integer Underflow or Wraparound vulnerability affecting Adobe Acrobat Reader versions 23.001.20093 and earlier, and 20.005.30441 and earlier, across Adobe, Apple, and Microsoft platforms. This high-severity vulnerability (CVSS 7.8) could lead to arbitrary code execution if a user opens a specially crafted malicious file, requiring user interaction for exploitation. While the EPSS score is low, indicating a lower likelihood of exploitation, 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
>= 20.001.3005, <= 20.005.30441CPE matchmatch criteria
cpe:2.3:a:adobe:acrobat:*:*:*:*:classic:*:*:*
>= 15.008.20082, <= 23.001.20093CPE matchmatch criteria
cpe:2.3:a:adobe:acrobat_dc:*:*:*:*:continuous:*:*:*
>= 20.001.3005, <= 20.005.30441CPE matchmatch criteria
cpe:2.3:a:adobe:acrobat_reader:*:*:*:*:classic:*:*:*
>= 15.008.20082, <= 23.001.20093CPE matchmatch criteria
cpe:2.3:a:adobe:acrobat_reader_dc:*:*:*:*:continuous:*:*:*
<= 20.005.30441CPE match
cpe:2.3:a:adobe:acrobat_reader:*:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.1

7.8HIGH

CVSS:3.1/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
3.1

Exploit Intelligence

EPSS Score
4.57%
Probability of exploitation in next 30 days
EPSS Percentile
90.6%
Percentile rank of EPSS score among Peer Group
As of 2026-07-28
Model: v2026.06.15
This CVE's current EPSS score of 0.0457 is in the 91st percentile among its peer group of 11,621 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

Vendor Patches (1)

adobevendor investigatingvia nvd_reference
View patch

References

helpx.adobe.com / security/products/acrobat/apsb23-24.html
Vendor Advisory