CVE-2026-24074: Memory Corruption Buffer Overflow Vulnerability

CVE-2026-24074 Overview

CVE-2026-24074 is an out-of-bounds write vulnerability [CWE-787] affecting Qualcomm components. The flaw occurs when processing data with large offset and length values that exceed buffer limits during data copy operations. A local attacker with low privileges can trigger memory corruption, potentially leading to arbitrary code execution or system compromise. The vulnerability is disclosed in the Qualcomm September 2026 Security Bulletin.

Critical Impact
Local attackers with low privileges can corrupt memory to compromise confidentiality, integrity, and availability of affected systems without user interaction.

Affected Products

Qualcomm components as listed in the September 2026 Security Bulletin
Devices integrating vulnerable Qualcomm chipsets and firmware
Downstream OEM products pending vendor-specific patch distribution

Discovery Timeline

2026-09-17 - CVE CVE-2026-24074 published to NVD
2026-09-17 - Last updated in NVD database

Technical Details for CVE-2026-24074

Vulnerability Analysis

The vulnerability resides in a data copy routine within an affected Qualcomm component. When the routine processes input containing large offset and length values, it fails to validate that the combined values remain within the destination buffer boundary. This absence of bounds checking permits writes past the allocated memory region, corrupting adjacent data structures.

Out-of-bounds writes [CWE-787] in privileged components frequently enable attackers to overwrite function pointers, control structures, or return addresses. Successful exploitation on a mobile or embedded platform can escalate a low-privilege local process to kernel or trusted execution context privileges.

Root Cause

The root cause is missing or inadequate boundary validation on offset and length parameters supplied to a data copy operation. The affected code path trusts caller-supplied values without confirming that offset + length remains within the destination buffer size, resulting in a linear or arbitrary out-of-bounds write depending on input control.

Attack Vector

Exploitation requires local access with low privileges and no user interaction. An attacker delivers crafted input to the vulnerable interface, supplying offset and length values that exceed the destination buffer. The malformed request drives the copy routine to write outside the allocated region, corrupting memory in a manner the attacker can potentially control.

No public proof-of-concept, exploit code, or in-the-wild exploitation has been reported at the time of publication. The vulnerability is not listed in the CISA Known Exploited Vulnerabilities catalog.

Refer to the Qualcomm September 2026 Security Bulletin for component-level technical details.

Detection Methods for CVE-2026-24074

Indicators of Compromise

Unexpected process crashes or kernel panics on devices using vulnerable Qualcomm components
Anomalous log entries referencing memory access violations in affected drivers or firmware interfaces
Local processes issuing large or unusual offset and length parameters to system interfaces

Detection Strategies

Monitor device crash telemetry for signatures consistent with out-of-bounds writes in Qualcomm driver stacks
Inspect kernel and hardware abstraction layer logs for boundary violation errors during data copy operations
Correlate low-privilege process activity with subsequent privileged-context faults

Monitoring Recommendations

Enable verbose logging on affected driver interfaces where operationally feasible
Aggregate mobile and embedded device telemetry into a central analytics platform for anomaly detection
Track patch status across the device fleet and flag devices running pre-September 2026 firmware

How to Mitigate CVE-2026-24074

Immediate Actions Required

Inventory devices containing Qualcomm components identified in the September 2026 bulletin
Apply OEM firmware updates that incorporate Qualcomm's patch as soon as they are released
Restrict installation of untrusted local applications on affected devices to reduce local attack surface

Patch Information

Qualcomm addressed the vulnerability in the September 2026 Security Bulletin. Downstream device manufacturers must integrate the fix into their firmware images and distribute updates to end users. Confirm the corresponding OEM security patch level is deployed on all managed devices.

Workarounds

No official vendor workaround is documented; patching is the required remediation
Enforce application allowlisting on managed devices to limit local execution by untrusted code
Apply mobile device management policies that block sideloading and restrict debug interfaces

bash

# Verify Android security patch level on managed devices
adb shell getprop ro.build.version.security_patch

# Confirm value is 2026-09-01 or later before considering the device remediated