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TI-2026-17208 Aliases CVE-2026-21304GHSA-mfgx-cjh5-r373

InDesign Desktop | Heap-based Buffer Overflow (CWE-122)

Priority LOW 36CWE-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

InDesign Desktop 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 0.0028 20th percentileScored 2026-11-07
Fix Fixed InDesign Desktop (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

VendorProductAffected versionsFixed inStatusSource
AdobeInDesign Desktopup to 21.0; up to 19.5.521.1, 20.5.1Patch availableCNA
  • InDesign Desktop VendorAdobe Affected up to 21.0; up to 19.5.5 Fixed in 21.1, 20.5.1 Patch available CNA

CPE configurations NVD · 3

CPEVersionsRoleVendor
cpe:2.3:a:adobe:indesign:*:*:*:*:*:*:*:*before 20.5.1; 21.0 to before 21.1VulnerableAdobe
cpe:2.3:o:apple:macos:-:*:*:*:*:*:*:*not specified by NVDRunning onApple
cpe:2.3:o:microsoft:windows:-:*:*:*:*:*:*:*not specified by NVDRunning onMicrosoft
  • cpe:2.3:a:adobe:indesign:*:*:*:*:*:*:*:* Versions before 20.5.1; 21.0 to before 21.1 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 InDesign Desktop (Adobe) Fixed in 21.1, 20.5.1

Fixed in the same release

Records fixed by the same vendor advisory or release, as the CNA lists them.

  • Advisory ·

    Adobe InDesign Desktop — helpx.adobe.com/security/products/indesign/apsb26-02.html

    5 records Highest priority Priority LOW 5 LOW

    Other records, highest priority first

    • TI-2026-17181 InDesign Desktop | Heap-based Buffer Overflow (CWE-122)Priority LOW 36
    • TI-2026-17180 InDesign Desktop | Access of Uninitialized Pointer (CWE-824)Priority LOW 36
    • TI-2026-17179 InDesign Desktop | Access of Uninitialized Pointer (CWE-824)Priority LOW 36
    Show all 5 records → Advisory →

Timeline

  1. 2026-10-02 Threatist record created from CVE-2026-21304
  2. 2026-10-03 Alias added: GHSA-mfgx-cjh5-r373

References

Advisory 1

  • TI-2019-05027 Adobe InDesign versions 14.0.1 and below have an unsafe hyperlink processing… CVSS 3.1CRITICAL 9.8
  • TI-2017-08345 Memory corruption in Adobe InDesign 12.1.0 and earlier versions CVSS 3.0CRITICAL 9.8
  • TI-2016-06630 Memory corruption in Adobe InDesign 11.4.1 and earlier, InDesign Server 11.0.0 and earlier CVSS 3.1CRITICAL 9.8
  • TI-2021-04203 Adobe InDesign PCX file parsing out-of-bounds write vulnerability could lead to remote code execution CVSS 3.1HIGH 8.8
  • TI-2021-04202 Adobe InDesign PCX file parsing out-of-bounds write vulnerability could lead to remote code execution CVSS 3.1HIGH 8.8
  • TI-2020-07817 Out-of-bounds memory access could lead to code execution CVSS 3.1HIGH 7.8
See all 201 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences