Open Vehicle Monitoring System 3.3.005 CANswitch canformat_canswitch.cpp buffer overflow

CVSS Meta Temp Score
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Current Exploit Price (≈)
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CTI Interest Score
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7.3$0-$5k0.00

Summaryinfo

A vulnerability has been found in Open Vehicle Monitoring System 3.3.005 and classified as critical. This affects an unknown part of the file canformat_canswitch.cpp of the component CANswitch Handler. This manipulation causes buffer overflow. The identification of this vulnerability is CVE-2026-42469. It is possible to initiate the attack remotely. There is no exploit available.

Detailsinfo

A vulnerability has been found in Open Vehicle Monitoring System 3.3.005 and classified as critical. Affected by this vulnerability is an unknown part of the file canformat_canswitch.cpp of the component CANswitch Handler. The manipulation with an unknown input leads to a buffer overflow vulnerability. The CWE definition for the vulnerability is CWE-120. The product copies an input buffer to an output buffer without verifying that the size of the input buffer is less than the size of the output buffer, leading to a buffer overflow. As an impact it is known to affect confidentiality, integrity, and availability. The summary by CVE is:

Buffer overflow vulnerability in Open Vehicle Monitoring System 3 (OVMS3) 3.3.005. In canformat_canswitch.cpp the parser does not properly validate a CANswitch DLC value, allowing remote attackers to cause a denial of service or possibly execute arbitrary code via crafted CANswitch frames.

The advisory is shared at gist.github.com. This vulnerability is known as CVE-2026-42469 since 04/27/2026. The exploitation appears to be easy. The attack can be launched remotely. Technical details are known, but no exploit is available. The price for an exploit might be around USD $0-$5k at the moment (estimation calculated on 05/21/2026).

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 vulnerability database at EUVD (EUVD-2026-26697). Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

Productinfo

Name

Version

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔒
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 7.4
VulDB Meta Temp Score: 7.3

VulDB Base Score: 6.3
VulDB Temp Score: 6.1
VulDB Vector: 🔒
VulDB Reliability: 🔍

ADP CISA Base Score: 8.6
ADP CISA Vector: 🔒

CVSSv2info

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

Exploitinginfo

Class: Buffer overflow
CWE: CWE-120 / CWE-119
CAPEC: 🔒
ATT&CK: 🔒

Physical: No
Local: No
Remote: Yes

Availability: 🔒
Status: Not defined

EPSS Score: 🔒
EPSS Percentile: 🔒

Price Prediction: 🔍
Current Price Estimation: 🔒

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Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: no mitigation known
Status: 🔍

0-Day Time: 🔒

Timelineinfo

04/27/2026 CVE reserved
05/01/2026 +4 days Advisory disclosed
05/01/2026 +0 days VulDB entry created
05/21/2026 +19 days VulDB entry last update

Sourcesinfo

Advisory: gist.github.com
Status: Not defined

CVE: CVE-2026-42469 (🔒)
GCVE (CVE): GCVE-0-2026-42469
GCVE (VulDB): GCVE-100-360769
EUVD: 🔒

Entryinfo

Created: 05/01/2026 20:14
Updated: 05/21/2026 01:09
Changes: 05/01/2026 20:14 (53), 05/01/2026 20:53 (1), 05/21/2026 01:09 (11)
Complete: 🔍
Cache ID: 216::103

Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

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