Code execution or crash via authentication overflow
Published May 25, 2025 · Updated May 27, 2025
Buffer overflow in Canon printer firmware 05.07 and earlier allows remote attackers to execute code through WebService Authentication. The WebService Authentication handler overflows a buffer while processing authentication data; Canon has not disclosed the field, buffer, or copy operation. Reachability requires network-segment access, and direct Internet exposure can result in arbitrary code execution or a service crash.
Summary
What happened
Buffer overflow in Canon printer firmware 05.07 and earlier allows remote attackers to execute code through WebService Authentication. The WebService Authentication handler overflows a buffer while processing authentication data; Canon has not disclosed the field, buffer, or copy operation. Reachability requires network-segment access, and direct Internet exposure can result in arbitrary code execution or a service crash.
The record
- CVE
- CVE-2025-2146
- Published
- May 25, 2025
- Updated
- May 27, 2025
- Vendor
- Canon Inc.
- Product
- Satera MF656Cdw
- Classifications
- CWE-787, T1190
- Attack vector
- network
- Privileges
- unauthenticated
Timeline
How it unfolded
- May 25, 2025CVE publishedPublication date reported by the CVE source.
- May 27, 2025Record updatedLatest update available in the CVE record.
Exploitability
Present is not the same as exploitable
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Is a vulnerable build present?
Compare these published version ranges with your installed build and any vendor patches.
- Affected versionversion=05.07 and earlier
What conditions does exploitation require?
What is affected?
Published CVSS scores
CVSS describes severity. EPSS estimates exploitation probability.
Attacks
What attackers are doing with it
Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.
Public exploit references
No public exploit references are available in this record.
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Technologies
Your stack
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Your stack
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