What is CVE-2026-21276?

CVE-2026-21276 is a high-severity vulnerability in Adobe Indesign Desktop, classified under Access of Uninitialized Pointer. CVSS score: 7.8/10. Published 2026-01-13.

How severe is CVE-2026-21276?

High severity. CVSS v3 base score is 7.8 out of 10.

Vulnerability in Adobe Indesign Desktop

CVE-2026-21276

InDesign Desktop versions 21.0, 19.5.5 and earlier are affected by an Access of Uninitialized Pointer vulnerability that could result in arbitrary code execution in the context of the current user. Exploitation of this issue requires user…

EPSS: 0.000 (15.2th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 7.8 (High). Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H.

Affected products

Adobe Indesign Desktop — versions 0

Weakness classification (CWE)

CWE-824 — Access of Uninitialized Pointer

References

helpx.adobe.com/security/products/indesign/apsb26-02.html (vendor-advisory)

Frequently asked questions

What is CVE-2026-21276?: CVE-2026-21276 is a high-severity vulnerability in Adobe Indesign Desktop, classified under Access of Uninitialized Pointer. CVSS score: 7.8/10. Published 2026-01-13.
How severe is CVE-2026-21276?: High severity. CVSS v3 base score is 7.8 out of 10.