Is CVE-2026-34703 in the CISA KEV catalog?

No. CVE-2026-34703 is not currently on the CISA Known Exploited Vulnerabilities list.

What is the CVSS severity of CVE-2026-34703?

CVE-2026-34703 has a CVSS v3 base score of 5.5 (MEDIUM).

What is the EPSS score for CVE-2026-34703?

CVE-2026-34703 has an EPSS score of 0.13% (3th percentile), estimating the probability of exploitation in the next 30 days.

How do I fix CVE-2026-34703?

Upgrade indesign to 21.4 or later.

CVE & CISA-KEV Catalog

CVE-2026-34703

MEDIUM

5.5

CVSS v3

NVD

Description

InDesign Desktop versions 21.3, 20.5.3 and earlier are affected by a NULL Pointer Dereference vulnerability that could result in an application denial-of-service. An attacker could exploit this vulnerability to crash the application, leading to a denial-of-service condition. Exploitation of this issue requires user interaction in that a victim must open a malicious file.

CWE-476NULL Pointer Dereference

How to fix

Remediation Available

indesignNVD

Affected:>= 21.0, < 21.4Fixed in:21.4CVE-2026-34703derived from NVD

Remediation is compiled from vendor and distribution security advisories. Always confirm against the linked source for your exact version and platform.

CVSS v3 Vector

Exploitability

Attack VectorLocal

Attack ComplexityLow

Privileges RequiredNone

User InteractionRequired

ScopeUnchanged

Impact

ConfidentialityNone

IntegrityNone

AvailabilityHigh

CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H

Exploit Intelligence

0.13%probability of exploitation in 30 days

3rdpercentile

Low risk: more likely to be exploited than 3% of all known CVEs.

References

Vendor Advisory1

helpx.adobe.com

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This product uses NVD data but is not endorsed or certified by the NVD. EPSS scores courtesy of FIRST.org (https://www.first.org/epss). Source: CISA KEV Catalog. Data as of 2026-06-10.