CVE-2021-39859— Use After Free Adobe Acrobat Pro DC [HB-21-0339]
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I. Basic Information for CVE-2021-39859
Vulnerability Information
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Vulnerability Title
Use After Free Adobe Acrobat Pro DC [HB-21-0339]
Source: NVD (National Vulnerability Database)
Vulnerability Description
Acrobat Reader DC versions 2021.005.20060 (and earlier), 2020.004.30006 (and earlier) and 2017.011.30199 (and earlier) are affected by a Use After Free vulnerability that could lead to disclosure of sensitive memory. An attacker could leverage this vulnerability to bypass mitigations such as ASLR. 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:U/C:H/I:N/A:N
Source: NVD (National Vulnerability Database)
Vulnerability Type
释放后使用
Source: NVD (National Vulnerability Database)
Vulnerability Title
Adobe Acrobat 和 Reader 资源管理错误漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Adobe Acrobat是美国奥多比（Adobe）公司的一套PDF文件编辑和转换工具。 Adobe Acrobat 和 Reader存在资源管理错误漏洞，该漏洞的存在是由于一个NULL指针解除引用错误。远程攻击者可利用该漏洞可以欺骗受害者打开一个特制的文件并执行拒绝服务(DoS)攻击。该漏洞允许远程攻击者可利用该漏洞执行拒绝服务(DoS)攻击。
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)
Affected Products
| Vendor | Product | Affected Versions | CPE | Subscribe |
|---|---|---|---|---|
| Adobe | Acrobat Reader | 0 ~ 2021.005.20060 | - |
II. Public POCs for CVE-2021-39859
| # | POC Description | Source Link | Shenlong Link |
|---|
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Same Patch Batch · Adobe · 2023-09-06 · 8 CVEs total
| CVE-2021-36023 | 9.1 CRITICAL | Magento Commerce Widgets Update Layout XML Injection Vulnerability Could Lead To Remote Co |
| CVE-2021-21088 | 7.8 HIGH | Adobe Acrobat Pro DC Use-After-Free Remote Code Execution Vulnerability |
| CVE-2021-35980 | 7.8 HIGH | Adobe Acrobat Reader SpellDictionaryExport Path Traversal Remote Code Execution Vulnerabil |
| CVE-2021-28644 | 7.8 HIGH | Adobe Acrobat SpellDictionaryCreate Path Traversal Remote Code Execution Vulnerability |
| CVE-2021-36036 | 7.2 HIGH | Magento Commerce Media Gallery Upload Improper Access Control Could Lead To Remote Code Ex |
| CVE-2021-36021 | 7.2 HIGH | Magento Commerce CMS Page Improper Input Validation Could Lead To Remote Code Execution |
| CVE-2021-36060 | 5.5 MEDIUM | Adobe Media Encoder MPEG File Parsing Out-Of-Bounds Read Information Disclosure Vulnerabil |
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-2026-34621
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)
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)
V. Comments for CVE-2021-39859
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