CVE-2026-9258: Improper validation of SSH host keys in Canon EOS Network Setting Tool Version 1.5.0 or earlier

Q: How do I fix CVE-2026-9258?

eos network setting tool: upgrade to 1.5.1. Exact commands for each OS are on this page.

Q: Is CVE-2026-9258 being exploited?

CVE-2026-9258 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

Q: What does CVE-2026-9258 affect?

CVE-2026-9258 affects eos network setting tool. Severity is medium (CVSS 6.5). Improper validation of SSH host keys in Canon EOS Network Setting Tool Version 1.5.0 or earlier

Q: How urgent is CVE-2026-9258?

Priority 27/100. No elevated risk signals yet.

Routine

MEDIUM 6.5UPGRADE

CVE-2026-9258 is a medium-severity flaw (CVSS 6.5) affecting eos network setting tool. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

Improper validation of SSH host keys in Canon EOS Network Setting Tool Version 1.5.0 or earlier

Why this priority

No elevated risk signals yet

A fixed release or distro patch exists.

Risk facts

CVSS score	6.5 (Medium)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	None
User interaction	Required
EPSS exploit chance	0.3% (top 81%)
CISA exploited list	No
Weakness	CWE-295
Published	2026-06-16
Last modified	2026-06-18

Publisher (CNA): Canon Inc. · Vendor: canon

Last updated 2026-06-18 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2026-06-16 00:16 UTCPublished CVE record published
2026-06-18 17:08 UTCUpdated Record last modified

canon eos network setting tool UPGRADE

Affected: < 1.5.1

Fixed in: 1.5.1

Safe to downgrade to: no unaffected older release

1. Check installed version

apt-cache policy eos-network-setting-tool || rpm -q eos-network-setting-tool || eos-network-setting-tool --version

2. UPGRADE to 1.5.1 (Debian / Ubuntu)

sudo apt update && sudo apt install --only-upgrade eos-network-setting-tool

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade eos-network-setting-tool

Note

Distros often backport fixes without changing the version number. Confirm with the distro advisory or changelog.

Verify at the official source NVD · CVE Program · Report a problem with this page
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.

Quick answers

How do I fix CVE-2026-9258?

eos network setting tool: upgrade to 1.5.1. Exact commands for each OS are on this page.

Is CVE-2026-9258 being exploited?

CVE-2026-9258 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

What does CVE-2026-9258 affect?

CVE-2026-9258 affects eos network setting tool. Severity is medium (CVSS 6.5). Improper validation of SSH host keys in Canon EOS Network Setting Tool Version 1.5.0 or earlier

How urgent is CVE-2026-9258?

Priority 27/100. No elevated risk signals yet.

Software pages

Canon printers vulnerabilities

Related CVEs

CVE-2026-9262 MEDIUM 6.5 UPGRADE Use of a non-secure protocol as the default FTP configuration in Canon EOS Network Setting Tool Version 1.5.0
CVE-2026-9260 MEDIUM 6.2 UPGRADE Use of hard-coded cryptographic keys in Canon EOS Network Setting Tool Version 1.5.0 or earlier
CVE-2026-9261 MEDIUM 6.8 UPGRADE Use of weak SSH cryptographic algorithms in Canon EOS Network Setting Tool Version 1.5.0 or earlier
CVE-2026-9259 MEDIUM 6.5 UPGRADE Improper validation of server certificates in Canon EOS Network Setting Tool Version 1.5.0 or earlier

References

← Back to latest CVEs