CVE & CISA-KEV Catalog

CVE-2026-34626

MEDIUM
6.3
CVSS v3
NVD

Description

Acrobat Reader versions 26.001.21411, 24.001.30360, 24.001.30362 and earlier are affected by an Improperly Controlled Modification of Object Prototype Attributes ('Prototype Pollution') vulnerability that could result in arbitrary file system read in the context of the current user. Exploitation of this issue requires user interaction in that a victim must open a malicious file.

CWE-1321

How to fix

Remediation Available
Adobe Acrobat 2020Windows application
Affected:24.0.0 24.001.30365Fixed in:24.001.30365
Adobe Acrobat ProWindows application
Affected:24.0.0 24.001.30365Fixed in:24.001.30365
Adobe Acrobat Reader (32-bit)Windows application
Affected:15.008.20082 26.001.21431Fixed in:26.001.21431
Adobe Acrobat Reader (64-bit)Windows application
Affected:15.008.20082 26.001.21431Fixed in:26.001.21431

Remediation is compiled from vendor and distribution security advisories. Always confirm against the linked source for your exact version and platform.

CVSS v3 Vector

Exploitability

Attack VectorLocal
Attack ComplexityLow
Privileges RequiredNone
User InteractionRequired
ScopeChanged

Impact

ConfidentialityHigh
IntegrityNone
AvailabilityNone

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

Exploit Intelligence

0.34%probability of exploitation in 30 days
26thpercentile

Low risk: more likely to be exploited than 26% of all known CVEs.

References

Vendor Advisory1
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This product uses NVD data but is not endorsed or certified by the NVD. EPSS scores courtesy of FIRST.org (https://www.first.org/epss). Source: CISA KEV Catalog. Data as of 2026-04-16.