Vulnerability details
CVE-2026-34621
Actively exploited
Adobe AcrobatAdobe Acrobat DCAdobe Acrobat Reader DC
Acrobat Reader | Improperly Controlled Modification of Object Prototype Attributes ('Prototype Pollution') (CWE-1321)
CVSS 3.1
8.6High
Official description
Acrobat Reader versions 24.001.30356, 26.001.21367 and earlier are affected by an Improperly Controlled Modification of Object Prototype Attributes ('Prototype Pollution') vulnerability that could result in arbitrary code execution in the context of the current user. Exploitation of this issue requires user interaction in that a victim must open a malicious file.
CVSS scores
| Score | Version | Source | Vector |
|---|---|---|---|
| 8.6High | 3.1 | CVEProject cvelistV5 (CNA) (adobe) | CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:H |
Affected products
| Vendor | Product | Versions | Source |
|---|---|---|---|
| Adobe | Acrobat 2024 | v ≤ 24.001.30356 | CVEProject cvelistV5 (CNA) |
| Adobe | Acrobat DC | v ≤ 26.001.21367 | CVEProject cvelistV5 (CNA) |
| Adobe | Acrobat Reader DC | v ≤ 26.001.21367 | CVEProject cvelistV5 (CNA) |
References and advisories
2
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Details
- Published
- 2026-04-11
- Last updated
- 2026-08-28
- State
- Published
- Assigner (CNA)
- adobe
- Kolun priority
- 87 · Critical
CISA KEV catalog
- Date added
- 2026-04-13
- Due date
- 2026-04-27
- Used in ransomware
- Unknown
Exploit prediction (EPSS)
7.34%
Probability of exploitation in 30 days
94.4%
Percentile (among all CVEs)
SSVC assessment (CISA)
- Automatable
- No
- Exploitation
- Active
- Technical impact
- Total
Weaknesses (CWE)
- CWE-1321Improperly Controlled Modification of Object Prototype Attributes ('Prototype Pollution') (CWE-1321)