CVE-2026-40385
Nikon Libexif Integer Overflow Vulnerability
Description
In libexif through 0.6.25, an unsigned 32bit integer overflow in Nikon MakerNote handling could be used by local attackers to cause crashes or information leaks. This only affects 32bit systems.
INFO
Published Date :
April 12, 2026, 7:16 p.m.
Last Modified :
April 14, 2026, 8:15 p.m.
Remotely Exploit :
No
Source :
[email protected]
CVSS Scores
| Score | Version | Severity | Vector | Exploitability Score | Impact Score | Source |
|---|---|---|---|---|---|---|
| CVSS 3.1 | MEDIUM | 8254265b-2729-46b6-b9e3-3dfca2d5bfca | ||||
| CVSS 3.1 | MEDIUM | [email protected] | ||||
| CVSS 3.1 | HIGH | [email protected] |
Solution
- Update libexif to the latest version.
- Apply vendor patches for affected systems.
- Compile libexif with appropriate compiler flags if available.
Public PoC/Exploit Available at Github
CVE-2026-40385 has a 1 public
PoC/Exploit available at Github.
Go to the Public Exploits tab to see the list.
References to Advisories, Solutions, and Tools
Here, you will find a curated list of external links that provide in-depth
information, practical solutions, and valuable tools related to
CVE-2026-40385.
| URL | Resource |
|---|---|
| https://github.com/libexif/libexif/commit/93003b93e50b3d259bd2227d8775b73a53c35d58 | Patch |
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2026-40385 is
associated with the following CWEs:
Common Attack Pattern Enumeration and Classification (CAPEC)
Common Attack Pattern Enumeration and Classification
(CAPEC)
stores attack patterns, which are descriptions of the common attributes and
approaches employed by adversaries to exploit the CVE-2026-40385
weaknesses.
We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).
None
Python
Results are limited to the first 15 repositories due to potential performance issues.
The following list is the news that have been mention
CVE-2026-40385 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2026-40385 vulnerability over time.
Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.
-
Initial Analysis by [email protected]
Apr. 14, 2026
Action Type Old Value New Value Added CVSS V3.1 AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H Added CPE Configuration OR *cpe:2.3:a:libexif_project:libexif:*:*:*:*:*:*:*:* versions up to (including) 0.6.25 Added Reference Type MITRE: https://github.com/libexif/libexif/commit/93003b93e50b3d259bd2227d8775b73a53c35d58 Types: Patch -
New CVE Received by [email protected]
Apr. 12, 2026
Action Type Old Value New Value Added Description In libexif through 0.6.25, an unsigned 32bit integer overflow in Nikon MakerNote handling could be used by local attackers to cause crashes or information leaks. This only affects 32bit systems. Added CVSS V3.1 AV:L/AC:H/PR:N/UI:N/S:U/C:L/I:N/A:L Added CWE CWE-190 Added Reference https://github.com/libexif/libexif/commit/93003b93e50b3d259bd2227d8775b73a53c35d58