Quick answers
- Is CVE-2026-34703 exploited in the wild?
- No. Junglewise Threat Intelligence has no report of CVE-2026-34703 being exploited in the wild.
- How severe is CVE-2026-34703?
- Medium severity, with a CVSS score of 5.5, published 9 June 2026.
- Which products and versions are affected?
- Adobe InDesign 21.3, 20.5.3 and earlier.
- Is there a fix for CVE-2026-34703?
- No fixed version is recorded yet. Check the vendor's advisory in the references below. If you run it, Junglewise drafts a mitigation that fits your setup and applies it once you approve, with senior security engineers behind it.
- How is CVE-2026-34703 attacked?
- It is attacked with local access, in a network appliance.
- Am I affected by CVE-2026-34703?
- Check whether you run Adobe InDesign at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.
Technical details
A NULL Pointer Dereference vulnerability (CWE-476) exists in Adobe InDesign Desktop versions 21.3, 20.5.3 and earlier. The flaw is triggered when the application attempts to read or process a specifically crafted malicious file. An attacker can exploit this by distributing a malicious document that, when opened by a user, causes the application to crash (Denial of Service). The attack vector is local and requires user interaction (UI:R). No privilege escalation or data exfiltration is associated with this specific vulnerability. Adobe has addressed this in security bulletin APSB26-58.
Affected products
- Adobe InDesign Desktop 21.3, 20.5.3 and earlier
Timeline
- 2026-06-09: disclosed
- 2026-06-09: advisory