Qualcomm Snapdragon Compute FastConnect 7800 up to WSA8845 IOCTL Call use after free

CVSS Meta Temp Score
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Current Exploit Price (≈)
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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.
7.6$0-$5k0.00

Summaryinfo

A vulnerability, which was classified as critical, was found in Qualcomm Snapdragon Compute, Snapdragon Mobile and Snapdragon Wearables. Affected is an unknown function of the component IOCTL Call Handler. Executing a manipulation can lead to use after free. This vulnerability is handled as CVE-2025-21436. It is possible to launch the attack on the local host. There is not any exploit available. You should upgrade the affected component.

Detailsinfo

A vulnerability was found in Qualcomm Snapdragon Compute, Snapdragon Mobile and Snapdragon Wearables. It has been declared as critical. This vulnerability affects some unknown functionality of the component IOCTL Call Handler. The manipulation with an unknown input leads to a use after free vulnerability. The CWE definition for the vulnerability is CWE-416. Referencing memory after it has been freed can cause a program to crash, use unexpected values, or execute code. As an impact it is known to affect confidentiality, integrity, and availability. CVE summarizes:

Memory corruption may occur while initiating two IOCTL calls simultaneously to create processes from two different threads.

The advisory is shared for download at docs.qualcomm.com. This vulnerability was named CVE-2025-21436 since 12/18/2024. The exploitation appears to be easy. The attack needs to be approached locally. 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 10/04/2025).

Upgrading eliminates this vulnerability.

The vulnerability is also documented in the vulnerability database at EUVD (EUVD-2025-9996). Once again VulDB remains the best source for vulnerability data.

Productinfo

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Vendor

Name

Version

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Website

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: Use after free
CWE: CWE-416 / CWE-119
CAPEC: 🔍
ATT&CK: 🔍

Physical: Partially
Local: Yes
Remote: No

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: Upgrade
Status: 🔍

0-Day Time: 🔍

Timelineinfo

12/18/2024 🔍
04/07/2025 +109 days 🔍
04/07/2025 +0 days 🔍
10/04/2025 +180 days 🔍

Sourcesinfo

Vendor: qualcomm.com

Advisory: docs.qualcomm.com
Status: Confirmed

CVE: CVE-2025-21436 (🔍)
GCVE (CVE): GCVE-0-2025-21436
GCVE (VulDB): GCVE-100-303676
EUVD: 🔍

Entryinfo

Created: 04/07/2025 12:52
Updated: 10/04/2025 16:27
Changes: 04/07/2025 12:52 (64), 08/20/2025 23:21 (1), 10/04/2025 16:27 (1)
Complete: 🔍
Cache ID: 216::103

Once again VulDB remains the best source for vulnerability data.

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