// For flags

CVE-2026-40310

ImageMagick: Heap out-of-bounds write in JP2 encoder

Severity Score

5.5
*CVSS v3.1

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

0
*Multiple Sources

Exploited in Wild

-
*KEV

Decision

Track
*SSVC
Descriptions

ImageMagick is free and open-source software used for editing and manipulating digital images. Versions below both 7.1.2-19 and 6.9.13-44, contain a heap out-of-bounds write in the JP2 encoder with when a user specifies an invalid sampling index. This issue has been fixed in versions 6.9.13-44 and 7.1.2-19.

*Credits: N/A
CVSS Scores
Attack Vector
Local
Attack Complexity
Low
Privileges Required
None
User Interaction
Required
Scope
Unchanged
Confidentiality
None
Integrity
None
Availability
High
* Common Vulnerability Scoring System
SSVC
  • Decision:Track
Exploitation
None
Automatable
No
Tech. Impact
Partial
* Organization's Worst-case Scenario
Timeline
  • 2026-04-10 CVE Reserved
  • 2026-04-13 CVE Published
  • 2026-04-14 CVE Updated
  • 2026-05-15 EPSS Updated
  • ---------- Exploited in Wild
  • ---------- KEV Due Date
  • ---------- First Exploit
CWE
  • CWE-122: Heap-based Buffer Overflow
  • CWE-787: Out-of-bounds Write
CAPEC
Affected Vendors, Products, and Versions
Vendor Product Version Other Status
Vendor Product Version Other Status <-- --> Vendor Product Version Other Status
ImageMagick
Search vendor "ImageMagick"
 ImageMagick
Search vendor "ImageMagick" for product "ImageMagick"
 < 7.1.2
Search vendor "ImageMagick" for product "ImageMagick" and version " < 7.1.2"
en
Affected
ImageMagick
Search vendor "ImageMagick"
 ImageMagick
Search vendor "ImageMagick" for product "ImageMagick"
 < 6.9.13
Search vendor "ImageMagick" for product "ImageMagick" and version " < 6.9.13"
en
Affected