What is CVE-2025-21156?

CVE-2025-21156 is a high-severity vulnerability in Adobe Incopy, classified under Integer Underflow. CVSS score: 7.8/10. Published 2025-02-11.

How severe is CVE-2025-21156?

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

Integer overflow in Adobe Incopy

CVE-2025-21156

InCopy versions 20.0, 19.5.1 and earlier are affected by an Integer Underflow (Wrap or Wraparound) vulnerability that could result in arbitrary code execution in the context of the current user. Exploitation of this issue requires user int…

EPSS: 0.003 (24.5th 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 Incopy — versions 20.0, 0
Apple Macos
Microsoft Windows

Weakness classification (CWE)

CWE-191 — Integer Underflow

References

psirt@adobe.com (vendor-advisory, Vendor Advisory)

Frequently asked questions

What is CVE-2025-21156?: CVE-2025-21156 is a high-severity vulnerability in Adobe Incopy, classified under Integer Underflow. CVSS score: 7.8/10. Published 2025-02-11.
How severe is CVE-2025-21156?: High severity. CVSS v3 base score is 7.8 out of 10.