Quick answers
- Is CVE-2026-34707 exploited in the wild?
- No. Junglewise Threat Intelligence has no report of CVE-2026-34707 being exploited in the wild.
- How severe is CVE-2026-34707?
- High severity, with a CVSS score of 7.8, published 9 June 2026.
- Which products and versions are affected?
- Adobe InCopy 21.3, 20.5.3 and earlier.
- Is there a fix for CVE-2026-34707?
- 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-2026-34707 attacked?
- It is attacked with local access, in a network appliance.
- Am I affected by CVE-2026-34707?
- Check whether you run Adobe InCopy 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 heap-based buffer overflow (CWE-122) exists in Adobe InCopy versions 21.3, 20.5.3 and earlier. The vulnerability is triggered when the application fails to properly validate input while parsing a malicious file, leading to memory corruption. An attacker can exploit this by convincing a victim to open a specifically crafted document. Successful exploitation allows for arbitrary code execution in the context of the current user. The attack vector is local (AV:L) and requires user interaction (UI:R).
Affected products
- Adobe InCopy 21.3, 20.5.3 and earlier
Timeline
- 2026-06-09: disclosed
- 2026-06-09: advisory