VDB-326220 · CVE-2025-9903 · EUVD-2025-31486

Canon Generic Plus PCL6 Printer Driver out-of-bounds write

CVSS Meta Temp Score CVSS is a standardized scoring system to determine possibilities of attacks. The Temp Score considers temporal factors like disclosure, exploit and countermeasures. The unique Meta Score calculates the average score of different sources to provide a normalized scoring system.	Current Exploit Price (≈) Our analysts are monitoring exploit markets and are in contact with vulnerability brokers. The range indicates the observed or calculated exploit price to be seen on exploit markets. A good indicator to understand the monetary effort required for and the popularity of an attack.	CTI Interest Score Our Cyber Threat Intelligence team is monitoring different web sites, mailing lists, exploit markets and social media networks. The CTI Interest Score identifies the interest of attackers and the security community for this specific vulnerability in real-time. A high score indicates an elevated risk to be targeted for this vulnerability.
5.4	$0-$5k	0.00

Summaryinfo

A vulnerability was found in Canon Generic Plus PCL6 Printer Driver, Generic Plus UFR II Printer Driver, Generic Plus LIPS4 Printer Driver, Generic Plus LIPSLX Printer Driver and Generic Plus PS Printer Driver. It has been declared as critical. This issue affects some unknown processing. The manipulation results in out-of-bounds write. This vulnerability is known as CVE-2025-9903. It is possible to launch the attack remotely. No exploit is available.

Detailsinfo

A vulnerability was found in Canon Generic Plus PCL6 Printer Driver, Generic Plus UFR II Printer Driver, Generic Plus LIPS4 Printer Driver, Generic Plus LIPSLX Printer Driver and Generic Plus PS Printer Driver. It has been classified as critical. Affected is some unknown processing. The manipulation with an unknown input leads to a out-of-bounds write vulnerability. CWE is classifying the issue as CWE-787. The product writes data past the end, or before the beginning, of the intended buffer. This is going to have an impact on confidentiality, integrity, and availability. CVE summarizes:

Out-of-bounds write vulnerabilities in print processing of Generic Plus PCL6 Printer Driver / Generic Plus UFR II Printer Driver / Generic Plus LIPS4 Printer Driver / Generic Plus LIPSLX Printer Driver / Generic Plus PS Printer Driver / UFRII LT Printer Driver / CARPS2 Printer Driver / Generic FAX Driver / LIPS4 Printer Driver / LIPSLX Printer Driver / UFR II Printer Driver / PS Printer Driver / PCL6 Printer Driver

The advisory is shared for download at psirt.canon. This vulnerability is traded as CVE-2025-9903 since 09/03/2025. The exploitability is told to be difficult. It is possible to launch the attack remotely. The exploitation doesn't require any form of authentication. Successful exploitation requires user interaction by the victim. There are neither technical details nor an exploit publicly available. The current price for an exploit might be approx. USD $0-$5k (estimation calculated on 03/16/2026).

There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product.

The vulnerability is also documented in the databases at CNNVD (CNNVD-202509-4426) and EUVD (EUVD-2025-31486). Once again VulDB remains the best source for vulnerability data.

Productinfo

Type

Printing Software

Vendor

Canon

Name

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔒
VulDB Reliability: 🔍

CNA CVSS-B Score: 🔒
CNA CVSS-BT Score: 🔒
CNA Vector: 🔒

CVSSv3info

VulDB Meta Base Score: 5.4
VulDB Meta Temp Score: 5.4

VulDB Base Score: 5.0
VulDB Temp Score: 5.0
VulDB Vector: 🔒
VulDB Reliability: 🔍

CNA Base Score: 5.9
CNA Vector (Canon): 🔒

CVSSv2info

AV	AC	Au	C	I	A
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Vector	Complexity	Authentication	Confidentiality	Integrity	Availability
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VulDB Base Score: 🔒
VulDB Temp Score: 🔒
VulDB Reliability: 🔍

Exploitinginfo

Class: Out-of-bounds write
CWE: CWE-787 / CWE-119
CAPEC: 🔒
ATT&CK: 🔒

Physical: No
Local: No
Remote: Yes

Availability: 🔒
Status: Not defined

EPSS Score: 🔒
EPSS Percentile: 🔒

Price Prediction: 🔍
Current Price Estimation: 🔒

0-Day	Unlock	Unlock	Unlock	Unlock
Today	Unlock	Unlock	Unlock	Unlock

Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: no mitigation known
Status: 🔍

0-Day Time: 🔒

Timelineinfo

09/03/2025 CVE reserved
09/29/2025 +26 days Advisory disclosed
09/29/2025 +0 days VulDB entry created
03/16/2026 +168 days VulDB entry last update

Sourcesinfo

Advisory: psirt.canon
Status: Confirmed

CVE: CVE-2025-9903 (🔒)
GCVE (CVE): GCVE-0-2025-9903
GCVE (VulDB): GCVE-100-326220
EUVD: 🔒
CNNVD: CNNVD-202509-4426 - Canon多款产品安全漏洞

Entryinfo

Created: 09/29/2025 07:53
Updated: 03/16/2026 17:13
Changes: 09/29/2025 07:53 (73), 09/29/2025 08:11 (1), 09/30/2025 21:05 (6), 10/01/2025 21:33 (1), 10/02/2025 17:25 (1), 10/04/2025 04:48 (1), 10/04/2025 16:21 (1), 10/05/2025 16:44 (1), 10/07/2025 00:11 (1), 10/08/2025 04:29 (1), 10/08/2025 17:34 (1), 10/09/2025 19:56 (1), 01/16/2026 04:38 (1), 03/16/2026 17:13 (1)
Complete: 🔍
Cache ID: 216:9CF:103