CVE-2026-9259
Improper validation of server certificates in Canon EOS Network Setting Tool Version 1.5.0 or...
Improper validation of server certificates in Canon EOS Network Setting Tool Version 1.5.0 or earlier
Attack profile
How easy it is to exploit
- Attack vector
- Network
- Complexity
- Low
- Privileges needed
- None
- User interaction
- Passive
What an attacker can affect
- Confidentiality
- High
- Integrity
- None
- Availability
- None
Exploit likelihood
What each source reports
CVE List Score used
Improper validation of server certificates in Canon EOS Network Setting Tool Version 1.5.0 or earlier
- Record
CVE-2026-9259- CVSS 4.0
- 7.1 High
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 - CVSS 3.1
- 6.5 Medium
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N - Weakness
- CWE-295
- Updated
- 2026-11-02
EUVDEUVD-2026-37019
Improper validation of server certificates in Canon EOS Network Setting Tool Version 1.5.0 or earlier
- Record
EUVD-2026-37019- CVSS 4.0
- 7.1 High
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 - Updated
- 2026-11-02
GitHub AdvisoriesGHSA-v5vr-c46f-3vhm
Improper validation of server certificates in Canon EOS Network Setting Tool Version 1.5.0 or...
Improper validation of server certificates in Canon EOS Network Setting Tool Version 1.5.0 or earlier
- Record
GHSA-v5vr-c46f-3vhm- CVSS 4.0
- 7.1 High
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 - CVSS 3.1
- 6.5 Medium
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N - Weakness
- CWE-295
- Updated
- 2026-11-02
NVD
Improper validation of server certificates in Canon EOS Network Setting Tool Version 1.5.0 or earlier
- Record
CVE-2026-9259- CVSS 4.0
- 7.1 High
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 - CVSS 3.1
- 6.5 Medium
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N - CVSS 3.1
- 9.8 Critical
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H - Weakness
- CWE-295
- Updated
- 2026-11-02
Affected products
History
| Recorded | Changed | Sources |
|---|---|---|
| first indexed | CVE List, EUVD, GitHub Advisories, NVD |
Dates are when Every CVE recorded each change. Upstream dates may differ.
In short
CVE-2026-9259 is a high vulnerability (CVSS 7.1) in Canon Eos Network Setting Tool, published June 15, 2026. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 0.19%, the 9th percentile. No source names a fixed version.
References
psirt.canon/advisory-information/cp2026-005
canon.jp/support/support-info/260615vulnerability-response
usa.canon.com/about-us/to-our-customers/cpa2026-005-vulnerability-remediation-for-eos-network-setting-tool
canon-europe.com/support/product-security
nvd.nist.gov/vuln/detail/CVE-2026-9259
github.com/advisories/GHSA-v5vr-c46f-3vhm