CVE-2026-9259

Name: CVE-2026-9259
Creator: NVD / NIST
Published: 2026-06-16T00:16:35.623+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

HIGHCVSS 7.1/10EPSS 0.19%

Last modified Jun 18, 2026

CVE-2026-9259 is a high-severity vulnerability rated 7.1/10 on the CVSS scale. Improper validation of server certificates in Canon EOS Network Setting Tool Version 1.5.0 or earlier. EPSS estimates a 0.19% chance of exploitation in the next 30 days.

Description

Improper validation of server certificates in Canon EOS Network Setting Tool Version 1.5.0 or earlier

Metrics

CVSS 3.1

9.8/10

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

CVSS 4.0

7.1/10

CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X

EPSS Probability

0.19%

9.4th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-295

Affected Software

Vendor	Product	Versions
Canon	Eos Network Setting Tool	< 1.5.1

References

https://canon.jp/support/support-info/260615vulnerability-responseVendor Advisory
https://psirt.canon/advisory-information/cp2026-005/Vendor Advisory
https://www.canon-europe.com/support/product-security/Vendor Advisory
https://www.usa.canon.com/about-us/to-our-customers/cpa2026-005-vulnerability-remediation-for-eos-network-setting-toolVendor Advisory

Timeline

Published: Jun 16, 2026
Last Modified: Jun 18, 2026
Status: Analyzed

Frequently Asked Questions

What is CVE-2026-9259?

Improper validation of server certificates in Canon EOS Network Setting Tool Version 1.5.0 or earlier

How severe is CVE-2026-9259?

CVE-2026-9259 has a CVSS score of 7.1/10 (HIGH severity). The EPSS model estimates a 0.19% probability of exploitation in the next 30 days.

How do I fix CVE-2026-9259?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2026-9259?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST