CVE-2026-25264: Package Extraction Privilege Escalation

CVE-2026-25264 is a privilege escalation vulnerability affecting package extraction processes due to weak configuration settings. Attackers can exploit this flaw to gain elevated system privileges. This article covers technical details, affected versions, security impact, and recommended mitigation strategies.

CVE-2026-25264 Overview

CVE-2026-25264 is a privilege escalation vulnerability caused by weak configuration during a package extraction process. The flaw is categorized under [CWE-427] Uncontrolled Search Path Element, indicating that the extraction routine loads resources from insecure or attacker-influenced locations. A local authenticated attacker with low privileges can leverage the weakness to gain higher privileges on the affected system. The issue was published in the Qualcomm June 2026 Security Bulletin and affects components covered by that advisory.

Critical Impact
A local low-privileged user can escalate to a higher privilege context, resulting in full compromise of confidentiality, integrity, and availability with a scope change across trust boundaries.

Affected Products

Qualcomm components disclosed in the June 2026 Security Bulletin
Devices and platforms integrating the affected package extraction component
Software distributions relying on the vulnerable extraction workflow

Discovery Timeline

2026-09-22 - CVE-2026-25264 published to the National Vulnerability Database (NVD)
2026-09-22 - Last updated in NVD database

Technical Details for CVE-2026-25264

Vulnerability Analysis

The vulnerability resides in the package extraction process, where weak configuration allows a local attacker to influence the resources loaded or executed during extraction. Because extraction occurs in a privileged execution context, resources placed in attacker-controlled paths execute with elevated rights. The scope change reflected in the vulnerability metrics indicates that exploitation crosses the original security boundary of the low-privileged caller. Successful exploitation grants attackers the ability to read protected data, modify system state, and disrupt service availability.

Root Cause

The root cause is classified as [CWE-427] Uncontrolled Search Path Element. The extraction routine resolves helper binaries, libraries, or configuration files without pinning trusted absolute paths or validating the integrity of loaded resources. An attacker who can plant files in a writable directory that appears in the search order can inject controlled code into the privileged extraction flow.

Attack Vector

Exploitation requires local access and low-level privileges on the target device. The attacker stages a malicious payload in a directory consulted by the vulnerable extraction process, then triggers or waits for a package extraction event. When the privileged process resolves the tainted search path, it loads the attacker's payload and executes it with elevated rights. No user interaction is required beyond the ordinary package handling workflow.

See the Qualcomm June 2026 Security Bulletin for vendor-provided technical details.

Detection Methods for CVE-2026-25264

Indicators of Compromise

Unexpected binaries, shared libraries, or scripts appearing in directories consulted by package extraction utilities.
Package extraction processes spawning child processes from non-standard paths or user-writable locations.
File integrity changes to helper components used during package installation or extraction.

Detection Strategies

Monitor process ancestry for privileged extraction workers loading modules from unexpected paths.
Alert on writes to directories that lie in the resolved search order of package management binaries.
Correlate package extraction events with subsequent privilege transitions or new SUID artifacts.

Monitoring Recommendations

Enable audit logging for file creation and modification in directories used by package extraction routines.
Track invocations of package installation utilities and capture the resolved paths of dynamically loaded components.
Retain telemetry from local privilege escalation attempts for retrospective hunting after patch deployment.

How to Mitigate CVE-2026-25264

Immediate Actions Required

Apply the Qualcomm patches referenced in the June 2026 Security Bulletin as soon as they are available for your device platform.
Restrict local access to affected systems and enforce least privilege for non-administrative accounts.
Audit directories consulted during package extraction and remove any unauthorized files.

Patch Information

Qualcomm has published fixes as part of the June 2026 Security Bulletin. Device manufacturers and integrators should incorporate the vendor's updates into their firmware and software release cycles and distribute them to affected devices.

Workarounds

Tighten filesystem permissions on directories used by package extraction so that only trusted administrative accounts can write to them.
Remove untrusted entries from the resolved search paths consumed by package extraction utilities.
Limit which local users can invoke package installation or extraction workflows until patches are applied.

bash

# Configuration example
# Restrict write access to directories consulted during package extraction
chown -R root:root /path/to/extraction/helpers
chmod -R 755 /path/to/extraction/helpers

# Audit for unexpected files in extraction helper directories
find /path/to/extraction/helpers -type f -not -user root -ls