mf1643i ii firmware vulnerabilities and fixes

Recent CVEs affecting mf1643i ii firmware, with upgrade or downgrade steps. 3 tracked.

Also searched as: mf1643iiifirmware.

mf1643i ii firmware has 3 tracked vulnerabilities, 3 critical. A fixed release or vendor patch exists for 3. Most recent: 2026-01-16. Highest priority: CVE-2025-14235 (score 54/100).

• CVE-2025-14235 CRITICAL 9.8 UPGRADE UPGRADE Buffer overflow in XPS font fpgm data processing on Small Office Multifunction Printers and Laser Printers(*)
• CVE-2025-14233 CRITICAL 9.8 UPGRADE UPGRADE Invalid free in CPCA file deletion processing on Small Office Multifunction Printers and Laser Printers(*) whi
• CVE-2025-14231 CRITICAL 9.8 UPGRADE UPGRADE Buffer overflow in print job processing by WSD on Small Office Multifunction Printers and Laser Printers(*) wh

FAQ

How do I fix mf1643i ii firmware vulnerabilities?

Open the CVE for your version, check the affected range, then follow the listed action: upgrade to the fixed release, or downgrade or mitigate if no fix exists yet. Commands for each OS are shown on every CVE page.

Is mf1643i ii firmware being exploited right now?

None of the tracked mf1643i ii firmware CVEs are on the CISA Known Exploited Vulnerabilities list at the moment. This is checked every 20 minutes.

Which mf1643i ii firmware CVE should I patch first?

CVE-2025-14235 currently ranks highest (54/100): Buffer overflow in XPS font fpgm data processing on Small Office Multifunction Printers and Laser Printers(*) .

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