CVE-2026-34621— Acrobat Reader | Improperly Controlled Modification of Object Prototype Attributes ('Prototype Pollution') (CWE-1321)
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I. Basic Information for CVE-2026-34621
Vulnerability Information
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Vulnerability Title
Acrobat Reader | Improperly Controlled Modification of Object Prototype Attributes ('Prototype Pollution') (CWE-1321)
Source: NVD (National Vulnerability Database)
Vulnerability 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.
Source: NVD (National Vulnerability Database)
CVSS Information
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:H
Source: NVD (National Vulnerability Database)
Vulnerability Type
CWE-1321
Source: NVD (National Vulnerability Database)
Vulnerability Title
Adobe Acrobat Reader 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Adobe Acrobat Reader是美国奥多比（Adobe）公司的一款PDF查看器。该软件用于打印，签名和注释 PDF。 Adobe Acrobat Reader 24.001.30356版本、26.001.21367版本及之前版本存在安全漏洞，该漏洞源于对象原型属性修改不当，可能导致在当前用户环境中执行任意代码。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)
Shenlong Deep Dive — AI Deep Analysis
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Affected Products
| Vendor | Product | Affected Versions | CPE | Subscribe |
|---|---|---|---|---|
| Adobe | Acrobat Reader | 0 ~ 26.001.21367 | - |
II. Public POCs for CVE-2026-34621
| # | POC Description | Source Link | Shenlong Link |
|---|
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IV. Related Vulnerabilities
Same product: Acrobat Reader
- CVE-2026-34622
Acrobat Reader | Improperly Controlled Modification of Objec - CVE-2026-34626
Acrobat Reader | Improperly Controlled Modification of Objec - CVE-2026-27221
Acrobat Reader | Improper Certificate Validation (CWE-295) - CVE-2026-27278
Acrobat Reader | Use After Free (CWE-416) - CVE-2026-27220
Acrobat Reader | Use After Free (CWE-416)
Same vendor: Adobe
- CVE-2026-34632
Photoshop Installer | CWE-427: Uncontrolled Search Path Elem - CVE-2026-27297
Adobe Framemaker | Integer Underflow (Wrap or Wraparound) (C - CVE-2026-27300
Adobe Framemaker | Access of Uninitialized Pointer (CWE-824) - CVE-2026-27296
Adobe Framemaker | Integer Underflow (Wrap or Wraparound) (C - CVE-2026-27290
Adobe Framemaker | Untrusted Search Path (CWE-426)
Same weakness: CWE-1321
- CVE-2026-42264
Axios: Prototype pollution read-side gadgets in HTTP adapter - CVE-2026-42232
n8n: XML Node Prototype Pollution to RCE - CVE-2026-42231
n8n: Prototype Pollution in XML Webhook Body Parser Leads to - CVE-2026-42077
Evolver: Prototype Pollution via `Object.assign()` in mailbo - CVE-2026-42033
Axios: Prototype Pollution Gadgets - Response Tampering, Dat
V. Comments for CVE-2026-34621
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