9.8

CVE-2026-9259: canon inc. eos network setting tool for macos Improper Certificate Validation

CVSS: 9.8v3.1CriticalAnalyzed
Published 15-06-2026Last modified 16-06-2026
Open JSON

Vulnerability summary

CVE-2026-9259 is a critical (CVSS 9.8) Improper Certificate Validation vulnerability in canon inc. eos network setting tool for macos. EPSS estimates a 0.34% chance of exploitation in the next 30 days, higher than 26.5% of scored vulnerabilities.

Overall risk
70/100
0100
High · default modelHow is this calculated?
CVSS score
9.8/10
010
Critical · v3.1 (NVD)
EPSS score
0.34%
0%100%
Low · +0.15 pp in 30 days
KEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits0No public exploits recorded

Timeline

  1. 15-06-2026
    PublishedVulnerability first disclosed.
  2. 16-06-2026
    Last modifiedVulnerability information updated.

Description

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

CVSS metrics

4 scores · 2 sources · 2 versions

EPSS trend

Probability

0.34%

Chance of exploitation in the next 30 days

Percentile

27%

Versus all other CVEs

30-day change

+0.15 pp

From 0.19% on 20-09-2026

20-09-202620-10-2026
EPSS score
0.34%

Known exploited

Compare KEV catalogs

Not in any of the 3 tracked catalogs.

Public exploits

0 found

No public exploits indexed.

Weaknesses

CWE · root cause

Affected systems

Canon inc.2 products
Canon1 product

2 vendors · 3 products

References

4 links