CVE-2025-9904Network attack vector

Printing interruption via unallocated memory access

Published Sep 29, 2025 · Updated Sep 29, 2025

Unallocated memory access in Canon Generic Plus printer drivers 3.30 and earlier allows remote attackers to interrupt printing. During print processing, the drivers access memory that has not been allocated, but Canon has not disclosed the specific parser, function, or input field responsible. Exploitation requires the driver to process print data supplied by a malicious application; the published impact is limited to a printing denial of service.

CVSS severity6.9
Medium
EPSS probability0.38%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Unallocated memory access in Canon Generic Plus printer drivers 3.30 and earlier allows remote attackers to interrupt printing. During print processing, the drivers access memory that has not been allocated, but Canon has not disclosed the specific parser, function, or input field responsible. Exploitation requires the driver to process print data supplied by a malicious application; the published impact is limited to a printing denial of service.

The record

CVE
CVE-2025-9904
Published
Sep 29, 2025
Updated
Sep 29, 2025
Vendor
Canon Inc.
Product
Generic Plus LIPSLX Printer Driver
Classifications
CWE-696, T1499
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Sep 29, 2025CVE publishedPublication date reported by the CVE source.
  2. Sep 29, 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.

  1. Affected versionversion=3.30 and earlier

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Canon Inc. · Generic Plus LIPSLX Printer Driverversion=3.30 and earlier
Canon Inc. · Generic Plus PCL6 Printer Driverversion=3.30 and earlier
Canon Inc. · Generic Plus UFR II Printer Driverversion=3.30 and earlier
Canon Inc. · Generic Plus LIPS4 Printer Driverversion=3.30 and earlier
Canon Inc. · Generic Plus PS Printer Driverversion=3.30 and earlier

Published CVSS scores

5.3Canon Inc.CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L
6.9Canon Inc.CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N

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.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-696Incorrect Behavior Order
T1499Endpoint Denial of Service

Public exploit references

No public exploit references are available in this record.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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