BlackBerry QNX Software Development Platform procnto DCMD_PROC_EVENT handler heap-based overflow

CVSS Meta Temp Score
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Current Exploit Price (≈)
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CTI Interest Score
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8.6$5k-$25k0.00+

Summaryinfo

A vulnerability was found in BlackBerry QNX Software Development Platform, QNX OS for Safety and QNX OS for Medical. It has been rated as very critical. This issue affects the function DCMD_PROC_EVENT handler of the component procnto. The manipulation leads to heap-based overflow. This vulnerability is listed as CVE-2026-40275. The attack must be carried out locally. There is no available exploit.

Detailsinfo

A vulnerability was found in BlackBerry QNX Software Development Platform, QNX OS for Safety and QNX OS for Medical (version unknown) and classified as very critical. This issue affects the function DCMD_PROC_EVENT handler of the component procnto. The manipulation with an unknown input leads to a heap-based overflow vulnerability. Using CWE to declare the problem leads to CWE-122. The product writes past the end of a buffer that was allocated on the heap. Impacted is confidentiality, integrity, and availability. The summary by CVE is:

Heap-based Buffer Overflow in the DCMD_PROC_EVENT handler of the procnto could allow an attacker with local access to cause an information disclosure, data tampering or a crash of the QNX Neutrino kernel.

The advisory is shared at support.blackberry.com. The identification of this vulnerability is CVE-2026-40275 since 04/10/2026. The exploitation is known to be easy. An attack has to be approached locally. Technical details are known, but no exploit is available. The price for an exploit might be around USD $5k-$25k at the moment (estimation calculated on 11/10/2026).

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

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

Productinfo

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Vendor

Name

License

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔒
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 8.6
VulDB Meta Temp Score: 8.6

VulDB Base Score: 8.8
VulDB Temp Score: 8.8
VulDB Vector: 🔒
VulDB Reliability: 🔍

CNA Base Score: 8.4
CNA Vector (blackberry): 🔒

CVSSv2info

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

Exploitinginfo

Class: Heap-based overflow
CWE: CWE-122 / CWE-119
CAPEC: 🔒
ATT&CK: 🔒

Physical: Partially
Local: Yes
Remote: No

Availability: 🔒
Status: Not defined
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

04/10/2026 CVE reserved
11/10/2026 +214 days Advisory disclosed
11/10/2026 +0 days VulDB entry created
11/10/2026 +0 days VulDB entry last update

Sourcesinfo

Advisory: support.blackberry.com
Status: Confirmed

CNA: blackberry
CVE: CVE-2026-40275 (🔒)

GCVE (CVE): GCVE-0-2026-40275
GCVE (VulDB): GCVE-100-434273

Entryinfo

Created: 11/10/2026 20:27
Changes: 11/10/2026 20:27 (62)
Complete: 🔍
Cache ID: 216::103

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

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