CVE-2026-34659— Adobe Connect | Deserialization of Untrusted Data (CWE-502)
Possible ATT&CK Techniques 3AI
T1059 · Command and Scripting Interpreter T1203 · Exploitation for Client Execution T1190 · Exploit Public-Facing ApplicationAffected Version Matrix 1
| Vendor | Product | Version Range | Status |
|---|---|---|---|
| Adobe | Adobe Connect | ≤ 2025.8.157 | affected |
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I. Basic Information for CVE-2026-34659
Vulnerability Information
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Vulnerability Title
Adobe Connect | Deserialization of Untrusted Data (CWE-502)
Source: NVD (National Vulnerability Database)
Vulnerability Description
Adobe Connect versions 2025.9.15, 2025.8.157 and earlier are affected by a Deserialization of Untrusted Data vulnerability that could result in arbitrary code execution in the context of the current user. An attacker could exploit this vulnerability to execute arbitrary code. Exploitation of this issue requires user interaction in that a victim must visit a maliciously crafted URL or interact with a compromised web page. Scope is changed.
Source: NVD (National Vulnerability Database)
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:H
Source: NVD (National Vulnerability Database)
Vulnerability Type
可信数据的反序列化
Source: NVD (National Vulnerability Database)
Vulnerability Title
Adobe Connect 代码问题漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Adobe Connect是美国奥多比（Adobe）公司的一个用于创建会议环境的软件。 Adobe Connect存在代码问题漏洞，该漏洞源于反序列化不可信数据，可能导致当前用户环境中执行任意代码。以下版本受到影响：2025.9.15版本、2025.8.157版本及之前版本。
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 | Adobe Connect | 0 ~ 2025.8.157 | - |
II. Public POCs for CVE-2026-34659
| # | POC Description | Source Link | Shenlong Link |
|---|
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Same Patch Batch · Adobe · 2026-05-12 · 51 CVEs total
| CVE-2026-34660 | 9.3 CRITICAL | Adobe Connect | Incorrect Authorization (CWE-863) |
| CVE-2026-34653 | 8.7 HIGH | Adobe Commerce | Improper Limitation of a Pathname to a Restricted Directory ('Path Traver |
| CVE-2026-34686 | 8.7 HIGH | Adobe Commerce | Cross-site Scripting (Stored XSS) (CWE-79) |
| CVE-2026-34687 | 7.8 HIGH | Illustrator | Heap-based Buffer Overflow (CWE-122) |
| CVE-2026-34675 | 7.8 HIGH | Substance3D - Painter | Out-of-bounds Write (CWE-787) |
| CVE-2026-34644 | 7.8 HIGH | After Effects | Integer Overflow or Wraparound (CWE-190) |
| CVE-2026-34676 | 7.8 HIGH | Substance3D - Painter | Out-of-bounds Write (CWE-787) |
| CVE-2026-34643 | 7.8 HIGH | After Effects | Out-of-bounds Write (CWE-787) |
| CVE-2026-34642 | 7.8 HIGH | After Effects | Heap-based Buffer Overflow (CWE-122) |
| CVE-2026-34639 | 7.8 HIGH | Media Encoder | Out-of-bounds Write (CWE-787) |
| CVE-2026-34640 | 7.8 HIGH | Media Encoder | Integer Overflow or Wraparound (CWE-190) |
| CVE-2026-34637 | 7.8 HIGH | Premiere Pro | Out-of-bounds Write (CWE-787) |
| CVE-2026-34661 | 7.8 HIGH | Illustrator | Out-of-bounds Write (CWE-787) |
| CVE-2026-34638 | 7.8 HIGH | Premiere Pro | Use After Free (CWE-416) |
| CVE-2026-34683 | 7.8 HIGH | Substance3D - Designer | Out-of-bounds Write (CWE-787) |
| CVE-2026-34684 | 7.8 HIGH | Substance3D - Designer | Out-of-bounds Write (CWE-787) |
| CVE-2026-34681 | 7.8 HIGH | Substance3D - Designer | Out-of-bounds Write (CWE-787) |
| CVE-2026-34682 | 7.8 HIGH | Substance3D - Designer | Out-of-bounds Write (CWE-787) |
| CVE-2026-34690 | 7.8 HIGH | After Effects | Stack-based Buffer Overflow (CWE-121) |
| CVE-2026-34636 | 7.8 HIGH | Premiere Pro | Out-of-bounds Write (CWE-787) |
Showing top 20 of 51 CVEs. View all on vendor page → →
IV. Related Vulnerabilities
Same product: Adobe Connect
- CVE-2026-34660
Adobe Connect | Incorrect Authorization (CWE-863) - CVE-2026-27303
Adobe Connect | Deserialization of Untrusted Data (CWE-502) - CVE-2026-34617
Adobe Connect | Cross-site Scripting (XSS) (CWE-79) - CVE-2026-21331
Adobe Connect | Cross-site Scripting (Reflected XSS) (CWE-79 - CVE-2026-27246
Adobe Connect | Cross-site Scripting (DOM-based XSS) (CWE-79
Same vendor: Adobe
- CVE-2026-34672
CAI Content Credentials | Integer Underflow (Wrap or Wraparo - CVE-2026-34671
CAI Content Credentials | Integer Overflow or Wraparound (CW - CVE-2026-34669
CAI Content Credentials | Improper Input Validation (CWE-20) - CVE-2026-34678
CAI Content Credentials | Uncontrolled Resource Consumption - CVE-2026-34688
CAI Content Credentials | Improper Input Validation (CWE-20)
Same weakness: CWE-502
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