Cisco Expressway Series Software Hardening Release: October 2026 - Incorrect Permission Assignment Vulnerabilities

As part of Cisco's ongoing commitment to proactive security and product quality, the Cisco Expressway Series software engineering team has conducted a comprehensive internal security review. This review resulted in software hardening releases that address multiple internally discovered vulnerabilities.   The vulnerabilities tracked by CVE-2026-76495 are related to issues concerning incorrect permission assignments that are grouped under the Common Weakness Enumeration (CWE) Variant CWE-732.

Rpm-ostree: world-readable /etc/shadow file

A security vulnerability has been discovered within rpm-ostree, pertaining to the /etc/shadow file in default builds having the world-readable bit enabled. This issue arises from the default permissions being set at a higher level than recommended, potentially exposing sensitive authentication data to unauthorized access.

Local Privilege Escalation in Virtual Intranet Access (VIA) Client for Linux

An arbitrary file write vulnerability exists in the Virtual Intranet Access (VIA) client. Successful exploitation could allow a local attacker with low privileges to escalate privileges on the affected system.

CVE-2026-16305

Local privilege escalation in `SmartUpdate.exe` and `SmartExecute.exe` in INFINITT Healthcare Co., Ltd. INFINITT PACS allows a local low-privileged attacker to execute arbitrary commands with administrator privileges via modification of a world-writable `execlist.txt` command manifest that is processed during application updates.

Local Privilege Escalation via OpenVPN Configuration and Proxy Settings in Securepoint SSL VPN Client v2 for Windows

Securepoint SSL VPN Client v2 on Windows contains vulnerabilities in the handling of OpenVPN configurations and proxy settings that allow non-privileged local users to influence operations performed with NT AUTHORITY\SYSTEM privileges. Two attack vectors have been identified: * Improper authorization of configuration checksum updates: The privileged service does not properly validate the authorization of connecting clients when updating the checksum of an OpenVPN configuration. This allows a non-privileged local user to modify an OpenVPN configuration and set a valid checksum without administrator privileges. The modified configuration is subsequently processed with NT AUTHORITY\SYSTEM privileges. * Argument injection via proxy settings: The client does not properly validate or sanitize proxy settings before passing them as arguments to OpenVPN. A non-privileged local user can inject additional arguments through the proxy settings, influencing the execution of OpenVPN with NT AUTHORITY\SYSTEM privileges. This attack vector does not require direct communication with the privileged service or modification of the protected OpenVPN configuration.

Quest Foglight for Databases FileServlet External Control of File Path Information Disclosure Vulnerability

Quest Foglight for Databases FileServlet External Control of File Path Information Disclosure Vulnerability. This vulnerability allows remote attackers to disclose sensitive information on affected installations of Quest Foglight for Databases. Authentication is required to exploit this vulnerability. The specific flaw exists within the FileServlet class. The issue results from the lack of proper validation of a user-supplied path prior to using it in file operations. An attacker can leverage this vulnerability to disclose information in the context of SYSTEM. Was ZDI-CAN-29216.

Quest Foglight for Databases writeTopologySectionToFile External Control of File Path Remote Code Execution Vulnerability

Quest Foglight for Databases writeTopologySectionToFile External Control of File Path Remote Code Execution Vulnerability. This vulnerability allows remote attackers to execute arbitrary code on affected installations of Quest Foglight for Databases. Authentication is not required to exploit this vulnerability. The specific flaw exists within the writeTopologySectionToFile method. The issue results from the lack of proper validation of a user-supplied path prior to using it in file operations. An attacker can leverage this vulnerability to execute code in the context of SYSTEM. Was ZDI-CAN-29169.

Quest Foglight for Databases Incorrect Permission Assignment Local Privilege Escalation Vulnerability

Quest Foglight for Databases Incorrect Permission Assignment Local Privilege Escalation Vulnerability. This vulnerability allows local attackers to escalate privileges on affected installations of Quest Foglight for Databases. An attacker must first obtain the ability to execute low-privileged code on the target system in order to exploit this vulnerability. The specific flaw exists within the product installer. The issue results from incorrect permissions on a folder used by the product. An attacker can leverage this vulnerability to escalate privileges and execute arbitrary code in the context of SYSTEM. Was ZDI-CAN-31118.

WhatsUp Gold versions prior to 26.0.2 contain an unauthenticated remote code execution vulnerability in an internal report scheduling service.

In WhatsUp Gold versions released before 2026.0.2, an unauthenticated remote attacker with network access to the affected service can execute arbitrary code in the context of the IIS application service account.

Nano: nano: local attacker can inject malicious .desktop launcher due to insecure directory permissions

A flaw was found in nano. In environments with permissive umask settings, a local attacker can exploit incorrect directory permissions (0777 instead of 0700) for the `~/.local` directory. This allows the attacker to inject a malicious `.desktop` launcher, which could lead to unintended actions or information disclosure if the launcher is subsequently processed.

Session Smart Conductor: Insecure file permissions cause unauthorized access to sensitive routing credentials

An Incorrect Permission Assignment for Critical Resource vulnerability in RoutingManager in Juniper Networks Session Smart Conductor allows a local user to access sensitive routing credentials via triggering processes that write to the /tmp directory.

Immich: Unauthenticated filesystem path injection (arbitrary directory write + recursive delete) in the machine-learning service

Immich is a high-performance self-hosted photo and video management solution. Prior to 3.3.0, the unauthenticated machine-learning /predict endpoint in machine-learning/immich_ml/main.py accepted an options object and passed its values into model construction in machine-learning/immich_ml/models/base.py without restricting security-sensitive parameters. An attacker with network access to the service could set cache_dir to an arbitrary writable path, causing model downloads to write there and causing clear_cache() to pass that path to shutil.rmtree() after selected model-loading failures. Depending on filesystem permissions and the selected path, this could modify files in mounted data locations or recursively delete an attacker-selected directory. The model-name allowlist prevents this issue from becoming arbitrary-model deserialization or code execution. This issue is fixed in version 3.3.0.

Libssh: libssh: denial of service via improper configuration file handling

A flaw was found in libssh where it can attempt to open arbitrary files during configuration parsing. A local attacker can exploit this by providing a malicious configuration file or when the system is misconfigured. This vulnerability could lead to a Denial of Service (DoS) by causing the system to try and access dangerous files, such as block devices or large system files, which can disrupt normal operations.

drm/amdgpu: add upper bound check on user inputs in wait ioctl

In the Linux kernel, the following vulnerability has been resolved: drm/amdgpu: add upper bound check on user inputs in wait ioctl Huge input values in amdgpu_userq_wait_ioctl can lead to a OOM and could be exploited. So check these input value against AMDGPU_USERQ_MAX_HANDLES which is big enough value for genuine use cases and could potentially avoid OOM. v2: squash in Srini's fix (cherry picked from commit fcec012c664247531aed3e662f4280ff804d1476)

Single Content Sync - Critical - External control of file name or path - SA-CONTRIB-2026-274

External Control of File Name or Path vulnerability in Drupal Single Content Sync allows Path Traversal. This issue affects Single Content Sync versions: from 0.0.0 to 1.4.19.

S3 File System - Moderately critical - Access bypass - SA-CONTRIB-2026-279

Incorrect Permission Assignment for Critical Resource vulnerability in Drupal S3 File System allows Exploiting Incorrectly Configured Access Control Security Levels. This issue affects S3 File System versions: from 0.0.0 to 3.12.0.

A permissions issue was addressed with additional restrictions. This issue is fixed in macOS Golden Gate 27.2, macOS Sequoia 15.8.2, macOS Tahoe 26.7.2. A malicious app may be able to read or write to protected files.

Pcs: pcs: non-root haclient users can read arbitrary files via pcs host auth --token

A flaw was found in PCS (Pacemaker Configuration System). A local attacker with membership in the 'haclient' group can exploit the 'pcs host auth --token' command to read the contents of arbitrary files on the filesystem, provided the files are shorter than 256 bytes. The file contents are read with root privileges by the pcsd daemon and can be exfiltrated by the attacker through subsequent cluster node communication. This allows disclosure of sensitive data such as API keys, tokens, or configuration secrets that would otherwise be inaccessible to the attacker.

Incus has an arbitrary file read+write on host via rootfs/ symlink in malicious image

Incus is a system container and virtual machine manager. Prior to version 7.2.0, a specially crafted image can be used to read or create/write arbitrary files on the host; possibly leading to arbitrary command execution. Version 7.2.0 fixes the issue.

Incus has arbitrary file read+write on host via templates/ symlink in malicious image

Incus is a system container and virtual machine manager. Prior to version 7.2.0, a specially crafted image or instance backup can be used to read or create/write arbitrary files on the host; possibly leading to arbitrary command execution. Version 7.2.0 patches the issue.