Buffer overflow in WebService Authentication processing of Small Office Multifunction Printers and Laser Printers(*) which may allow an atta
Buffer overflow in WebService Authentication processing of Small Office Multifunction Printers and Laser Printers(*) which may allow an attacker on the network segment to trigger the affected product being unresponsive or to execute arbitrary code. *: Satera MF656Cdw/Satera MF654Cdw/Satera MF551dw/Satera MF457dw firmware v05.07 and earlier sold in Japan. Color imageCLASS MF656Cdw/Color imageCLASS MF654Cdw/Color imageCLASS MF653Cdw/Color imageCLASS MF652Cdw/Color imageCLASS LBP633Cdw/Color imageCLASS LBP632Cdw/imageCLASS MF455dw/imageCLASS MF453dw/imageCLASS MF452dw/imageCLASS MF451dw/imageCLASS LBP237dw/imageCLASS LBP236dw/imageCLASS X MF1238 II/imageCLASS X MF1643i II/imageCLASS X MF1643iF II/imageCLASS X LBP1238 II firmware v05.07 and earlier sold in US. i-SENSYS MF657Cdw/i-SENSYS MF655Cdw/i-SENSYS MF651Cdw/i-SENSYS LBP633Cdw/i-SENSYS LBP631Cdw/i-SENSYS MF553dw/i-SENSYS MF552dw/i-SENSYS MF455dw/i-SENSYS MF453dw/i-SENSYS LBP236dw/i-SENSYS LBP233dw/imageRUNNER 1643iF II/imageRUNNER 1643i II/i-SENSYS X 1238iF II/i-SENSYS X 1238i II/i-SENSYS X 1238P II/i-SENSYS X 1238Pr II firmware v05.07 and earlier sold in Europe.
- Published
- May 25, 2025
- Updated
- Jun 17, 2026
- EPSS
- 0.9% · 58th percentile
- CWE
- CWE-787
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Report tools
Action score
39
Monitor
Low priority for now.
- CVSS
- 39 / 40 · 9.8 / 10
- CISA KEV
- 0 / 30 · Not listed
- EPSS
- 0 / 30 · 0.9%
CISA SSVC decision
- Exploitation
- none
- Automatable
- yes
- Technical impact
- total
Vulnrichment: CISA's decision-tree inputs.
CNA vs NVD score
- NVD
- 9.8
- CNA · Canon
- 9.8
- agree
The score given by the assigning authority versus NVD’s independent score. A gap means the severity is contested.
Affected systems
| Vendor | Product | CPE |
|---|---|---|
| canon | satera mf656cdw firmware | cpe:2.3:o:canon:satera_mf656cdw_firmware |
| canon | satera mf656cdw | cpe:2.3:h:canon:satera_mf656cdw |
| canon | satera mf654cdw firmware | cpe:2.3:o:canon:satera_mf654cdw_firmware |
| canon | satera mf654cdw | cpe:2.3:h:canon:satera_mf654cdw |
| canon | satera mf551dw firmware | cpe:2.3:o:canon:satera_mf551dw_firmware |
| canon | satera mf551dw | cpe:2.3:h:canon:satera_mf551dw |
| canon | satera mf457dw firmware | cpe:2.3:o:canon:satera_mf457dw_firmware |
| canon | satera mf457dw | cpe:2.3:h:canon:satera_mf457dw |
| canon | imageclass mf656cdw firmware | cpe:2.3:o:canon:imageclass_mf656cdw_firmware |
| canon | imageclass mf656cdw | cpe:2.3:h:canon:imageclass_mf656cdw |
| canon | imageclass mf654cdw firmware | cpe:2.3:o:canon:imageclass_mf654cdw_firmware |
| canon | imageclass mf654cdw | cpe:2.3:h:canon:imageclass_mf654cdw |
and 62 more
Affected versions
NVD version ranges (for catalog products). Add the product to your stack with a version and matching uses these.
- canon i-sensys lbp233dw firmwareup to 05.07 inclusive
- canon i-sensys lbp236dw firmwareup to 05.07 inclusive
- canon i-sensys lbp631cdw firmwareup to 05.07 inclusive
- canon i-sensys lbp633cdw firmwareup to 05.07 inclusive
- canon i-sensys mf453dw firmwareup to 05.07 inclusive
- canon i-sensys mf455dw firmwareup to 05.07 inclusive
- canon i-sensys mf552dw firmwareup to 05.07 inclusive
- canon i-sensys mf553dw firmwareup to 05.07 inclusive
- canon i-sensys mf651cdw firmwareup to 05.07 inclusive
- canon i-sensys mf655cdw firmwareup to 05.07 inclusive
- canon i-sensys mf657cdw firmwareup to 05.07 inclusive
- canon i-sensys x 1238i ii firmwareup to 05.07 inclusive
- canon i-sensys x 1238if ii firmwareup to 05.07 inclusive
- canon i-sensys x 1238p ii firmwareup to 05.07 inclusive
- canon i-sensys x 1238pr ii firmwareup to 05.07 inclusive
- canon imageclass lbp236dw firmwareup to 05.07 inclusive
- canon imageclass lbp237dw firmwareup to 05.07 inclusive
- canon imageclass lbp632cdw firmwareup to 05.07 inclusive
- canon imageclass lbp633cdw firmwareup to 05.07 inclusive
- canon imageclass mf451dw firmwareup to 05.07 inclusive
Versions reported by the vendor
Affected version ranges reported by the assigning authority (Canon). Independent of NVD's CPE analysis and usually ahead of it.
Canon Inc. Color imageCLASS LBP632Cdw
- 05.07 and earlieraffected
Canon Inc. Color imageCLASS LBP633Cdw
- 05.07 and earlieraffected
Canon Inc. Color imageCLASS MF652Cdw
- 05.07 and earlieraffected
Canon Inc. Color imageCLASS MF653Cdw
- 05.07 and earlieraffected
Canon Inc. Color imageCLASS MF654Cdw
- 05.07 and earlieraffected
Canon Inc. Color imageCLASS MF656Cdw
- 05.07 and earlieraffected
Canon Inc. i-SENSYS LBP233dw
- 05.07 and earlieraffected
Canon Inc. i-SENSYS LBP236dw
- 05.07 and earlieraffected
Canon Inc. i-SENSYS LBP631Cdw
- 05.07 and earlieraffected
Canon Inc. i-SENSYS LBP633Cdw
- 05.07 and earlieraffected
Canon Inc. i-SENSYS MF453dw
- 05.07 and earlieraffected
Canon Inc. i-SENSYS MF455dw
- 05.07 and earlieraffected
Remediation
Which version to upgrade to
Fix versions compiled from the vendor, package registries and Microsoft. Verify the vendor's note before upgrading.
No fix version is recorded for this entry. Check the references for vendor advisories.
Exploit status
No known public exploit
No public exploit has been observed yet. That doesn't mean you're safe, only that the bar is a little higher.
Research context
For pentesters and researchers: attack profile, score disagreement, timeline, patch commits, credits, variant and chain candidates, bug bounty scope. All derived from existing data; no exploit code.
Timeline
From publication to today: proof of concept, Metasploit module, CISA KEV and fix record. Dates are as reported by the sources.
No dated events beyond publication.
FIRST EPSS daily score; only changes of 0.01 or more are recorded (step chart).
Patch and commit links
Commit, PR and diff links among the references. A starting point for patch-diffing and variant hunting; fixes, not exploits.
No commit or PR link among the references.
Credits
All researchersFinders, reporters and analysts named in the CNA record. Click a name for that researcher’s other records.
No credits in the CNA record.
Variant candidates
Same product, same weakness class, within 18 months. If the patch missed the root cause, the sibling bug is here.
No nightly-computed relations.
Chain candidates
An authentication bypass and a privilege-requiring bug in the same product, published close together: combined they may become an unauthenticated path.
—
Bug bounty scope
No known public program.
Source: bounty-targets-data (public HackerOne, Bugcrowd, Intigriti, YesWeHack listings).
Technical details
Attack conditions
- Anyone who can reach it over the internet can trigger it.
- No account or password is required.
- No user action is required.
- No special conditions are required; it is repeatable.
If successful
- Confidentiality
- high · data can be read
- Integrity
- high · data or configuration can be modified
- Availability
- high · the service can be disrupted
- Attack vector
- Network
- Attack complexity
- Low
- Privileges required
- None
- User interaction
- None
- Scope
- Unchanged
- Confidentiality impact
- High
- Integrity impact
- High
- Availability impact
- High
Weakness class (CWE)
CWE-787 · Out-of-bounds WriteCVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
nvd-primary
Attack context
MITRE CAPEC attack patterns and ATT&CK techniques for this weakness class (CWE). A starting point for detection rules and threat hunting.
MITRE has no CAPEC/ATT&CK mapping for this CWE.
Noroxi analysis
No Noroxi analysis for this record yet
We don't hand-write analysis for all 385,000+ vulnerabilities; that wouldn't be honest. For notable, high-impact vulnerabilities our team writes the mechanism, detection and remediation steps.
We use this product, ask for helpChange log
No changes recorded on tracked fields yet. Score, KEV, exploit maturity and fix status changes appear here.
References
- canon.jp/support/support-info/250127vulnerability-response
- psirt.canon/advisory-information/cp2025-001/
- www.canon-europe.com/support/product-security/#news
- www.usa.canon.com/support/canon-product-advisories/service-notice-regarding-vulnerability-measure-against-buffer-overflow-for-laser-printers-and-small-office-multifunctional-printers
Vendor advisories and official records. Exploit/PoC links are deliberately left out.