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CVE-2026-34706— InCopy | Out-of-bounds Write (CWE-787)

CVSS 7.8 · High EPSS 0.14% · P4

Possible ATT&CK Techniques 1AI

T1203 · Exploitation for Client Execution

Affected Version Matrix 1

VendorProductVersion RangeStatus
AdobeInCopy≤ 20.5.3affected
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I. Basic Information for CVE-2026-34706

Vulnerability Information
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Vulnerability Title
InCopy | Out-of-bounds Write (CWE-787)
Source: CVE Program / CVE List V5
Vulnerability Description
InCopy versions 21.3, 20.5.3 and earlier are affected by an out-of-bounds write 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: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Source: CVE Program / CVE List V5
Vulnerability Type
跨界内存写
Source: CVE Program / CVE List V5
Vulnerability Title
Adobe InCopy 缓冲区错误漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Adobe InCopy是美国奥多比（Adobe）公司的一款用于创作的文本编辑软件。 Adobe InCopy 21.3版本、20.5.3版本及之前版本存在缓冲区错误漏洞，该漏洞源于越界写入漏洞，可能导致在当前用户环境中执行任意代码，利用此漏洞需要受害者打开恶意文件。
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

VendorProductAffected VersionsCPESubscribe
AdobeInCopy 0 ~ 20.5.3 -

II. Public POCs for CVE-2026-34706

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III. Intelligence Information for CVE-2026-34706

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Vendor Advisories for CVE-2026-34706 (1)

Same Patch Batch · Adobe · 2026-06-09 · 123 CVEs total

CVE-2026-4830310.0 CRITICALAdobe Campaign Classic (ACC) | Incorrect Authorization (CWE-863)
CVE-2026-4793810.0 CRITICALAdobe Campaign Classic (ACC) | Server-Side Request Forgery (SSRF) (CWE-918)
CVE-2026-479289.6 CRITICALColdFusion | Improper Input Validation (CWE-20)
CVE-2026-346919.3 CRITICALAdobe Experience Manager Forms JEE | Cross-site Scripting (Stored XSS) (CWE-79)
CVE-2026-479328.8 HIGHColdFusion | Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal'
CVE-2026-479078.6 HIGHDreamweaver Desktop | Improper Access Control (CWE-284)
CVE-2026-479068.6 HIGHDreamweaver Desktop | Dependency on Vulnerable Third-Party Component (CWE-1395)
CVE-2026-479298.4 HIGHColdFusion | Incorrect Authorization (CWE-863)
CVE-2026-479318.4 HIGHColdFusion | Improper Input Validation (CWE-20)
CVE-2026-479308.1 HIGHColdFusion | Improper Input Validation (CWE-20)
CVE-2026-346938.0 HIGHAdobe Experience Manager Forms JEE | Cross-site Scripting (Reflected XSS) (CWE-79)
CVE-2026-347017.8 HIGHInDesign Desktop | Heap-based Buffer Overflow (CWE-122)
CVE-2026-479197.8 HIGHAcrobat Reader | Use After Free (CWE-416)
CVE-2026-347087.8 HIGHInCopy | Stack-based Buffer Overflow (CWE-121)
CVE-2026-479217.8 HIGHAcrobat Reader | Use After Free (CWE-416)
CVE-2026-479207.8 HIGHAcrobat Reader | Use After Free (CWE-416)
CVE-2026-347077.8 HIGHInCopy | Heap-based Buffer Overflow (CWE-122)
CVE-2026-479137.8 HIGHAcrobat Reader | Use After Free (CWE-416)
CVE-2026-479147.8 HIGHAcrobat Reader | Use After Free (CWE-416)
CVE-2026-483057.8 HIGHSubstance3D - Sampler | Out-of-bounds Write (CWE-787)

Showing top 20 of 123 CVEs. View all on vendor page → →

IV. Related Vulnerabilities

Same product: InCopy
Same vendor: Adobe
Same weakness: CWE-787

V. Comments for CVE-2026-34706

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