InCopy | Heap-based Buffer Overflow (CWE-122)
Priority LOW 35CWE-122Published · Updated
Key facts
- Attack vector
- Local
- Privileges required
- None
- User interaction
- Required
- Attack complexity
- Low
- Impact type
- Code execution
- Confidentiality · integrity · availability
- High · High · High
- Fix status
- Fixed
Attack profile from CVSS 3.1 · CNA. Fix status from CNA. Impact type from CWE-122 and the CVSS impact.
Summary
InCopy versions 21.0, 19.5.5 and earlier are affected by a Heap-based Buffer Overflow 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.
Why it matters now
Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00228 13th percentileScored 2026-11-07
Fix Fixed InCopy (Adobe): 21.1, 20.5.1
SSVC decision points
CISA ADP · SSVC 2.0.3
- Exploitation
- None
- Automatable
- No
- Technical impact
- Total
The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| Adobe | InCopy | up to 21.0; up to 19.5.5 | 21.1, 20.5.1 | Patch available | CNA |
- InCopy VendorAdobe Affected up to 21.0; up to 19.5.5 Fixed in 21.1, 20.5.1 Patch available CNA
CPE configurations NVD · 4
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:a:adobe:incopy:*:*:*:*:*:*:*:* | before 20.5.1 | Vulnerable | Adobe |
| cpe:2.3:a:adobe:incopy:21.0:*:*:*:*:*:*:* | 21.0 | Vulnerable | Adobe |
| cpe:2.3:o:apple:macos:-:*:*:*:*:*:*:* | not specified by NVD | Running on | Apple |
| cpe:2.3:o:microsoft:windows:-:*:*:*:*:*:*:* | not specified by NVD | Running on | Microsoft |
- cpe:2.3:a:adobe:incopy:*:*:*:*:*:*:*:* Versions before 20.5.1 Vulnerable ·Adobe
- cpe:2.3:a:adobe:incopy:21.0:*:*:*:*:*:*:* Versions 21.0 Vulnerable ·Adobe
- cpe:2.3:o:apple:macos:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Apple
- cpe:2.3:o:microsoft:windows:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Microsoft
Remediation
- Fix · CNA InCopy (Adobe) Fixed in 21.1, 20.5.1
Timeline
- 2026-10-02 Threatist record created from CVE-2026-21281
- 2026-10-03 Alias added: GHSA-68xp-mq28-cc93
References
More Adobe Incopy vulnerabilities
- TI-2021-04195 Adobe InCopy DOCX file parsing directory traversal vulnerability could lead to remote code execution CVSS 3.1HIGH 8.8
- TI-2022-12790 Adobe InCopy Font Parsing Heap-based Buffer Overflow Remote Code Execution Vulnerability CVSS 3.0HIGH 7.8
- TI-2022-12786 Adobe InCopy Font Parsing Heap-based Buffer Overflow Remote Code Execution Vulnerability CVSS 3.0HIGH 7.8
- TI-2022-12793 Adobe InCopy Font Parsing Use-After-Free Remote Code Execution Vulnerability CVSS 3.0HIGH 7.8
- TI-2022-12791 Adobe InCopy Font Parsing Use-After-Free Remote Code Execution Vulnerability CVSS 3.0HIGH 7.8
- TI-2022-12787 Adobe InCopy Font Parsing Out-Of-Bounds Read Remote Code Execution Vulnerability CVSS 3.0HIGH 7.8
Sources
- CVE-2026-21281 · CVE Program
- CVE-2026-21281 · NVD
- FIRST EPSS
- GHSA-68xp-mq28-cc93 · GitHub Advisory Database · CC BY 4.0
This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences