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CVE-2026-21303

23
FAUCET Score

CVE-2026-21303 is an Out-of-bounds Read vulnerability affecting Adobe Substance3D Modeler versions 1.22.4 and earlier. This flaw could lead to memory exposure, allowing an attacker to disclose sensitive information. The vulnerability has a CVSS score of 5.5 (Medium), requiring user interaction to open a malicious file for successful exploitation. There is no evidence of active exploitation, and no public exploit code is available, though it has garnered significant community discussion.

Impacted Technologies

VendorProductVersion(s)CPE
< 1.22.5CPE matchmatch criteria
cpe:2.3:a:adobe:substance_3d_modeler:*:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.1

5.5MEDIUM

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

Attack Vector
LOCAL
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
REQUIRED
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
NONE
Availability Impact
NONE
Exploitability Score
1.8
Impact Score
3.6
CvssVersion
3.1

Exploit Intelligence

EPSS Score
0.21%
Probability of exploitation in next 30 days
EPSS Percentile
11.2%
Percentile rank of EPSS score among Peer Group
As of 2026-07-28
Model: v2026.06.15
This CVE's current EPSS score of 0.0021 is in the 14th percentile among its peer group of 5,765 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.0 Bluesky, 0.0 Mastodon, and 0.1 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/substance3d-modeler/apsb26-08.html
Vendor Advisory