Qualcomm Snapdragon Auto up to WSA8845H Memory Allocation integer overflow

CVSS Meta Temp Score
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CTI Interest Score
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7.6$0-$5k0.00

Summaryinfo

A vulnerability was found in Qualcomm Snapdragon Auto, Snapdragon CCW, Snapdragon Compute, Snapdragon Connectivity, Snapdragon Consumer IOT, Snapdragon Industrial IOT, Snapdragon Mobile, Snapdragon Voice & Music, Snapdragon WBC and Snapdragon Wearables. It has been classified as critical. Affected is an unknown function of the component Memory Allocation Handler. The manipulation leads to integer overflow. This vulnerability is traded as CVE-2026-21385. An attack has to be approached locally. Furthermore, there is an exploit available. Upgrading the affected component is recommended.

Detailsinfo

A vulnerability was found in Qualcomm Snapdragon Auto, Snapdragon CCW, Snapdragon Compute, Snapdragon Connectivity, Snapdragon Consumer IOT, Snapdragon Industrial IOT, Snapdragon Mobile, Snapdragon Voice & Music, Snapdragon WBC and Snapdragon Wearables. It has been rated as critical. This issue affects an unknown code block of the component Memory Allocation Handler. The manipulation with an unknown input leads to a integer overflow vulnerability. Using CWE to declare the problem leads to CWE-190. The product performs a calculation that can produce an integer overflow or wraparound, when the logic assumes that the resulting value will always be larger than the original value. This can introduce other weaknesses when the calculation is used for resource management or execution control. Impacted is confidentiality, integrity, and availability.

It is possible to read the advisory at docs.qualcomm.com. The identification of this vulnerability is CVE-2026-21385 since 12/17/2025. The exploitation is known to be easy. Attacking locally is a requirement. Technical details are unknown but an exploit is available. The pricing for an exploit might be around USD $0-$5k at the moment (estimation calculated on 03/18/2026).

It is declared as attacked. The CISA Known Exploited Vulnerabilities Catalog lists this issue since 03/03/2026 with a due date of 03/24/2026:

Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable.

Upgrading eliminates this vulnerability.

The vulnerability is also documented in the vulnerability database at Zero-Day.cz (1079). Be aware that VulDB is the high quality source for vulnerability data.

Productinfo

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CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔒
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 7.8
VulDB Meta Temp Score: 7.6

VulDB Base Score: 7.8
VulDB Temp Score: 7.5
VulDB Vector: 🔒
VulDB Reliability: 🔍

CNA Base Score: 7.8
CNA Vector (qualcomm): 🔒

CVSSv2info

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

Exploitinginfo

Class: Integer overflow
CWE: CWE-190 / CWE-189
CAPEC: 🔒
ATT&CK: 🔒

Physical: Partially
Local: Yes
Remote: No

Availability: 🔒
Status: Attacked

EPSS Score: 🔒
EPSS Percentile: 🔒

KEV Added: 🔒
KEV Due: 🔒
KEV Remediation: 🔒
KEV Ransomware: 🔒
KEV Notice: 🔒

Price Prediction: 🔍
Current Price Estimation: 🔒

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Zero-Day.cz: 🔒

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔒

Timelineinfo

12/17/2025 CVE reserved
03/02/2026 +75 days Advisory disclosed
03/02/2026 +0 days VulDB entry created
03/18/2026 +16 days VulDB entry last update

Sourcesinfo

Vendor: qualcomm.com

Advisory: docs.qualcomm.com
Status: Confirmed

CVE: CVE-2026-21385 (🔒)
GCVE (CVE): GCVE-0-2026-21385
GCVE (VulDB): GCVE-100-348479
scip Labs: https://www.scip.ch/en/?labs.20161013

Entryinfo

Created: 03/02/2026 20:34
Updated: 03/18/2026 21:11
Changes: 03/02/2026 20:34 (62), 03/03/2026 22:31 (13), 03/16/2026 06:39 (2), 03/18/2026 21:11 (1)
Complete: 🔍
Cache ID: 216::103

Be aware that VulDB is the high quality source for vulnerability data.

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