Cologne - CraftedSignal Threat Feedhttps://feed.craftedsignal.io/products/cologne/Trending threats, MITRE ATT&CK coverage, and detection metadata. Fed continuously.Hugoenhello@craftedsignal.iohello@craftedsignal.ioMon, 06 Jul 2026 21:21:29 +0000CVE-2026-25271: Memory Corruption in Qualcomm Snapdragonhttps://feed.craftedsignal.io/briefs/2026-07-cve-2026-25271-qualcomm/Mon, 06 Jul 2026 21:21:29 +0000hello@craftedsignal.iohttps://feed.craftedsignal.io/briefs/2026-07-cve-2026-25271-qualcomm/A high-severity memory corruption vulnerability (CVE-2026-25271) exists in Qualcomm Snapdragon products due to improper handling of asynchronous input parameters, enabling a local, low-privileged attacker to achieve high impact on confidentiality, integrity, and availability without user interaction.A high-severity memory corruption vulnerability, CVE-2026-25271, has been identified in Qualcomm Snapdragon products, affecting a wide range of versions including Snapdragon Compute and Industrial IOT platforms, FastConnect series (6900, 7800), and various IQX, SC, WCD, WSA, X, and XG series components. This vulnerability, classified as a Time-of-check Time-of-use (TOCTOU) race condition (CWE-367), arises from the improper handling of modified asynchronous input parameters between their validation and subsequent use. Discovered by Qualcomm, Inc. and published on 2026-07-06, successful exploitation could allow a local, low-privileged attacker to achieve high impact on the confidentiality, integrity, and availability of the affected system without requiring user interaction. While specific exploit details are not public, the nature of memory corruption and TOCTOU vulnerabilities often leads to privilege escalation or arbitrary code execution.

Attack Chain

The provided source describes a vulnerability (CVE-2026-25271) as a memory corruption due to a Time-of-Check Time-of-Use (TOCTOU) race condition in Qualcomm Snapdragon components. It does not detail specific observed exploitation steps or a full attack chain. Exploitation typically involves a local, low-privileged attacker carefully timing operations to modify asynchronous input parameters between a security check and their subsequent use, thereby bypassing intended security controls. This could lead to a corrupted memory state, which can be leveraged for privilege escalation or arbitrary code execution. Further steps in an attacker's chain would depend on the specific privileges gained and the system's configuration.

Impact

A successful exploitation of CVE-2026-25271 can lead to severe consequences, as indicated by its CVSS v3.1 score of 7.8 (High). This memory corruption vulnerability allows a local, low-privileged attacker to achieve high impact on confidentiality, integrity, and availability. This could manifest as arbitrary code execution within the kernel or a privileged process, enabling the attacker to bypass security mechanisms, access sensitive data, or render the system unstable or inoperable. The widespread nature of affected Qualcomm Snapdragon components means a broad range of devices, from compute platforms to IoT and connectivity modules, are at risk.

Recommendation

  • Apply the security updates provided by Qualcomm, Inc. as detailed in the official security bulletin referenced for CVE-2026-25271, targeting all affected Snapdragon products.
  • Prioritize patching for all Qualcomm Snapdragon Compute and Industrial IOT products, as well as FastConnect 6900/7800, and other listed affected versions (like IQX5121, IQX7181, SC8380XP, WCD9378C, WCD9380, WCD9385, WSA8840, WSA8845, WSA8845H, X2000077, X2000086, X2000090, X2000092, X2000094, XG101002, XG101032, XG101039) for CVE-2026-25271.
  • Monitor system event logs on devices using affected Qualcomm Snapdragon components for crashes, unexpected reboots, or unusual process behavior that might indicate an attempted exploitation of CVE-2026-25271.
]]>highadvisoryvulnerabilitymemory-corruptionqualcommsnapdragoncve