How severe is CVE-2026-21275?

CVE-2026-21275 has a CVSS 3.x base score of 7.8, rated high severity. It is exploitable over local access with low attack complexity, requires no privileges and user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2026-21275 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (12th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2026-21275?

CVE-2026-21275 affects Adobe Indesign. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2026-21275?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.

Does CVE-2026-21275 have an EU (EUVD) identifier?

Yes. CVE-2026-21275 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-2054.

When was CVE-2026-21275 published?

CVE-2026-21275 was published on 2026-01-13 and last updated on 2026-06-17.

CVE-2026-21275

CVE-2026-21275 is a high-severity vulnerability in Adobe Indesign with a CVSS 3.x base score of 7.8. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-824.

Key facts

Severity: High (CVSS 3.x base score 7.8)
EPSS exploit prediction: 0% (12th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2026-2054
Weakness: CWE-824
Affected product: Adobe Indesign
Published: 2026-01-13
Last modified: 2026-06-17

Description

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 interaction in that a victim must open a malicious file.

Frequently asked questions

What is CVE-2026-21275?: 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 interaction in that a victim must open a malicious file.
How severe is CVE-2026-21275?: CVE-2026-21275 has a CVSS 3.x base score of 7.8, rated high severity. It is exploitable over local access with low attack complexity, requires no privileges and user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2026-21275 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (12th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2026-21275?: CVE-2026-21275 affects Adobe Indesign. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2026-21275?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
Does CVE-2026-21275 have an EU (EUVD) identifier?: Yes. CVE-2026-21275 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-2054.
When was CVE-2026-21275 published?: CVE-2026-21275 was published on 2026-01-13 and last updated on 2026-06-17.

References

https://helpx.adobe.com/security/products/indesign/apsb26-02.html

Affected products (1)

cpe:2.3:a:adobe:indesign:*:*:*:*:*:*:*:*

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