CVE-2025-14236: Buffer overflow in Address Book attribute tag processing on Small Office Multifunction Printers(*) which may a

Q: How do I fix CVE-2025-14236?

mf455dw firmware: upgrade to newer than 06.02; mf453dw firmware: upgrade to newer than 06.02; mf452dw firmware: upgrade to newer than 06.02. Exact commands for each OS are on this page.

Q: Is CVE-2025-14236 being exploited?

CVE-2025-14236 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-2025-14236 affect?

CVE-2025-14236 affects mf455dw firmware, mf453dw firmware, mf452dw firmware. Severity is critical (CVSS 9.8). Buffer overflow in Address Book attribute tag processing on Small Office Multifunction Printers(*) which may allow an attacker on the network segment to trigger the affected product being unresponsive or to execute arbitrary code. *: Satera

Q: How urgent is CVE-2025-14236?

Priority 54/100. Critical severity; Remotely exploitable, no login, no user action

This month

CRITICAL 9.8REMOTEUPGRADEUPGRADEUPGRADE

CVE-2025-14236 is a critical-severity flaw (CVSS 9.8) affecting mf455dw firmware, mf453dw firmware, mf452dw firmware. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

Buffer overflow in Address Book attribute tag processing on Small Office Multifunction Printers(*) which may allow an attacker on the network segment to trigger the affected product being unresponsive or to execute arbitrary code. *: Satera LBP670C Series/Satera MF750C Series firmware v06.02 and earlier sold in Japan.Color imageCLASS LBP630C/Color imageCLASS MF650C Series/imageCLASS LBP230 Series/imageCLASS X LBP1238 II/imageCLASS MF450 Series/im

Why this priority

Critical severity
Remotely exploitable, no login, no user action

A fixed release or distro patch exists.

Risk facts

CVSS score	9.8 (Critical)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	None
User interaction	None
EPSS exploit chance	0.9% (top 40%)
CISA exploited list	No
Weakness	CWE-787
Published	2026-01-16
Last modified	2026-06-17

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

Last updated 2026-06-17 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2026-01-16 00:16 UTCPublished CVE record published
2026-06-17 08:35 UTCUpdated Record last modified

canon mf455dw firmware UPGRADE

Affected: <= 06.02

Fixed in: newer than 06.02

Safe to downgrade to: no unaffected older release

Check your OS release

cat /etc/os-release; uname -r

Debian / Ubuntu

sudo apt update && sudo apt full-upgrade

RHEL / Amazon Linux / Fedora

sudo dnf upgrade --refresh

Windows

Install the latest cumulative update from Windows Update

If no patch exists yet

OS downgrades are not safe. Apply the vendor mitigation from the advisory and restrict exposure.

canon mf453dw firmware UPGRADE

Affected: <= 06.02

Fixed in: newer than 06.02

Safe to downgrade to: no unaffected older release

Check your OS release

cat /etc/os-release; uname -r

Debian / Ubuntu

sudo apt update && sudo apt full-upgrade

RHEL / Amazon Linux / Fedora

sudo dnf upgrade --refresh

Windows

Install the latest cumulative update from Windows Update

If no patch exists yet

OS downgrades are not safe. Apply the vendor mitigation from the advisory and restrict exposure.

canon mf452dw firmware UPGRADE

Affected: <= 06.02

Fixed in: newer than 06.02

Safe to downgrade to: no unaffected older release

Check your OS release

cat /etc/os-release; uname -r

Debian / Ubuntu

sudo apt update && sudo apt full-upgrade

RHEL / Amazon Linux / Fedora

sudo dnf upgrade --refresh

Windows

Install the latest cumulative update from Windows Update

If no patch exists yet

OS downgrades are not safe. Apply the vendor mitigation from the advisory and restrict exposure.

canon mf451dw firmware UPGRADE

Affected: <= 06.02

Fixed in: newer than 06.02

Safe to downgrade to: no unaffected older release

Check your OS release

cat /etc/os-release; uname -r

Debian / Ubuntu

sudo apt update && sudo apt full-upgrade

RHEL / Amazon Linux / Fedora

sudo dnf upgrade --refresh

Windows

Install the latest cumulative update from Windows Update

If no patch exists yet

OS downgrades are not safe. Apply the vendor mitigation from the advisory and restrict exposure.

canon mf654cdw firmware UPGRADE

Affected: <= 06.02

Fixed in: newer than 06.02

Safe to downgrade to: no unaffected older release

Check your OS release

cat /etc/os-release; uname -r

Debian / Ubuntu

sudo apt update && sudo apt full-upgrade

RHEL / Amazon Linux / Fedora

sudo dnf upgrade --refresh

Windows

Install the latest cumulative update from Windows Update

If no patch exists yet

OS downgrades are not safe. Apply the vendor mitigation from the advisory and restrict exposure.

canon mf656cdw firmware UPGRADE

Affected: <= 06.02

Fixed in: newer than 06.02

Safe to downgrade to: no unaffected older release

Check your OS release

cat /etc/os-release; uname -r

Debian / Ubuntu

sudo apt update && sudo apt full-upgrade

RHEL / Amazon Linux / Fedora

sudo dnf upgrade --refresh

Windows

Install the latest cumulative update from Windows Update

If no patch exists yet

OS downgrades are not safe. Apply the vendor mitigation from the advisory and restrict exposure.

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-2025-14236?

mf455dw firmware: upgrade to newer than 06.02; mf453dw firmware: upgrade to newer than 06.02; mf452dw firmware: upgrade to newer than 06.02. Exact commands for each OS are on this page.

Is CVE-2025-14236 being exploited?

CVE-2025-14236 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-2025-14236 affect?

CVE-2025-14236 affects mf455dw firmware, mf453dw firmware, mf452dw firmware. Severity is critical (CVSS 9.8). Buffer overflow in Address Book attribute tag processing on Small Office Multifunction Printers(*) which may allow an attacker on the network segment to trigger the affected product being unresponsive or to execute arbitrary code. *: Satera

How urgent is CVE-2025-14236?

Priority 54/100. Critical severity; Remotely exploitable, no login, no user action

Software pages

Canon printers vulnerabilities

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References

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