CWE-379
Creation of Temporary File in Directory with Insecure Permissions
Monthly
Arbitrary file write in Dell Client BIOS affects multiple Alienware, Inspiron, and XPS systems through a link-following flaw (CWE-379) exploitable by a low-privileged local attacker. The vulnerability allows the BIOS update or management process to follow attacker-planted symlinks in temporary directories, redirecting privileged file writes to arbitrary filesystem locations - enabling integrity compromise or availability impact at the OS level. No public exploit identified at time of analysis and no CISA KEV listing; however, patch versions are confirmed via Dell advisory DSA-2026-280.
Privilege escalation in HP Easy Start for macOS (versions prior to 2.16.7.260722) allows low-privileged local users to gain elevated system access through insecure temporary file handling, classified under CWE-379. HP has released version 2.16.7.260722 to address these vulnerabilities, as detailed in advisory HPSBPI04124. No public exploit code exists and no CISA KEV listing is present at time of analysis, reducing immediate urgency despite a vendor-assigned CVSS 4.0 score of 7.7.
Privilege escalation in LuminalShine prior to version 26.05.0-rc4 stems from a latent file permission gap where `apps.json`, written by the SYSTEM service to `C:\ProgramData\LuminalShine\config\`, could be overwritten by local users if directory ACLs deviate from Windows defaults. On a default Windows installation this EoP path does not trigger because `BUILTIN\Users` inherits only Read+Execute rights from `C:\ProgramData`; the vulnerability is only exploitable when an administrator has loosened those inherited permissions. No public exploit code has been identified and no active exploitation is confirmed.
Local privilege escalation in the servereye Windows agent (Sensorhub / ClientAgentContainerService) versions 20.15 and earlier lets any local standard user gain SYSTEM. The SYSTEM-level SE3Recovery service (EmergencyRecoveryService.exe) watches a world-writable directory for a trigger file and then runs UpdaterAction.exe, which performs an unvalidated file copy from a user-controlled source over a protected service binary, resulting in full system compromise. No public exploit identified at time of analysis; this was reported by NCSC.ch and is not listed in CISA KEV, so there is no evidence of active exploitation.
Local privilege escalation and arbitrary code execution in the HP Accessory WMI Provider installer bundled with certain HP Docking Stations allows a low-privileged local user to gain elevated (likely SYSTEM) execution. The root cause is insecure temporary-file/directory permissions used during installation (CWE-379), which an attacker can abuse to introduce or replace executable content that a privileged installer process runs. No public exploit identified at time of analysis, and the issue is not listed in CISA KEV; HP has published advisory hpsbhf04129 and is releasing software updates.
Local privilege escalation in the Pi coding agent (npm packages @earendil-works/pi-coding-agent 0.74.0-0.78.0 and @mariozechner/pi-coding-agent 0.50.0-0.73.1) allows a co-resident attacker on a shared Linux host to pre-stage attacker-controlled extension code in a predictable `os.tmpdir()/pi-extensions` path that pi later loads as the victim user. No public exploit identified at time of analysis, but the issue was reported by CrowdStrike researchers and patched in 0.78.1 of the renamed package. Affects shared dev boxes, CI runners, and HPC login nodes; Windows/macOS default per-user temp directories typically avoid exposure.
OpenTelemetry.Exporter.OpenTelemetryProtocol versions 1.8.0 through 1.15.2 allow local attackers to inject malicious telemetry data, disclose stored telemetry payloads, or exhaust system resources by exploiting an insecure default disk retry directory that falls back to the shared system temporary path when the required directory configuration is not explicitly set. On multi-user systems, this enables attackers with read or write access to the temp directory to craft blob files that the exporter will forward to the OTLP endpoint under the application's identity, or to read exported telemetry data between transient export failures.
WinRAR 5.61 contains a denial of service vulnerability that allows local attackers to crash the application by placing a malformed winrar.lng language file in the installation directory. Rated medium severity (CVSS 6.9), this vulnerability is no authentication required, low attack complexity. Public exploit code available and no vendor patch available.
In mlflow version 2.20.3, the temporary directory used for creating Python virtual environments is assigned insecure world-writable permissions (0o777). [CVSS 7.0 HIGH]
pytest versions up to 9.0.2 contains a vulnerability that allows attackers to cause a denial of service or possibly gain privileges (CVSS 6.8).
Arbitrary file write in Dell Client BIOS affects multiple Alienware, Inspiron, and XPS systems through a link-following flaw (CWE-379) exploitable by a low-privileged local attacker. The vulnerability allows the BIOS update or management process to follow attacker-planted symlinks in temporary directories, redirecting privileged file writes to arbitrary filesystem locations - enabling integrity compromise or availability impact at the OS level. No public exploit identified at time of analysis and no CISA KEV listing; however, patch versions are confirmed via Dell advisory DSA-2026-280.
Privilege escalation in HP Easy Start for macOS (versions prior to 2.16.7.260722) allows low-privileged local users to gain elevated system access through insecure temporary file handling, classified under CWE-379. HP has released version 2.16.7.260722 to address these vulnerabilities, as detailed in advisory HPSBPI04124. No public exploit code exists and no CISA KEV listing is present at time of analysis, reducing immediate urgency despite a vendor-assigned CVSS 4.0 score of 7.7.
Privilege escalation in LuminalShine prior to version 26.05.0-rc4 stems from a latent file permission gap where `apps.json`, written by the SYSTEM service to `C:\ProgramData\LuminalShine\config\`, could be overwritten by local users if directory ACLs deviate from Windows defaults. On a default Windows installation this EoP path does not trigger because `BUILTIN\Users` inherits only Read+Execute rights from `C:\ProgramData`; the vulnerability is only exploitable when an administrator has loosened those inherited permissions. No public exploit code has been identified and no active exploitation is confirmed.
Local privilege escalation in the servereye Windows agent (Sensorhub / ClientAgentContainerService) versions 20.15 and earlier lets any local standard user gain SYSTEM. The SYSTEM-level SE3Recovery service (EmergencyRecoveryService.exe) watches a world-writable directory for a trigger file and then runs UpdaterAction.exe, which performs an unvalidated file copy from a user-controlled source over a protected service binary, resulting in full system compromise. No public exploit identified at time of analysis; this was reported by NCSC.ch and is not listed in CISA KEV, so there is no evidence of active exploitation.
Local privilege escalation and arbitrary code execution in the HP Accessory WMI Provider installer bundled with certain HP Docking Stations allows a low-privileged local user to gain elevated (likely SYSTEM) execution. The root cause is insecure temporary-file/directory permissions used during installation (CWE-379), which an attacker can abuse to introduce or replace executable content that a privileged installer process runs. No public exploit identified at time of analysis, and the issue is not listed in CISA KEV; HP has published advisory hpsbhf04129 and is releasing software updates.
Local privilege escalation in the Pi coding agent (npm packages @earendil-works/pi-coding-agent 0.74.0-0.78.0 and @mariozechner/pi-coding-agent 0.50.0-0.73.1) allows a co-resident attacker on a shared Linux host to pre-stage attacker-controlled extension code in a predictable `os.tmpdir()/pi-extensions` path that pi later loads as the victim user. No public exploit identified at time of analysis, but the issue was reported by CrowdStrike researchers and patched in 0.78.1 of the renamed package. Affects shared dev boxes, CI runners, and HPC login nodes; Windows/macOS default per-user temp directories typically avoid exposure.
OpenTelemetry.Exporter.OpenTelemetryProtocol versions 1.8.0 through 1.15.2 allow local attackers to inject malicious telemetry data, disclose stored telemetry payloads, or exhaust system resources by exploiting an insecure default disk retry directory that falls back to the shared system temporary path when the required directory configuration is not explicitly set. On multi-user systems, this enables attackers with read or write access to the temp directory to craft blob files that the exporter will forward to the OTLP endpoint under the application's identity, or to read exported telemetry data between transient export failures.
WinRAR 5.61 contains a denial of service vulnerability that allows local attackers to crash the application by placing a malformed winrar.lng language file in the installation directory. Rated medium severity (CVSS 6.9), this vulnerability is no authentication required, low attack complexity. Public exploit code available and no vendor patch available.
In mlflow version 2.20.3, the temporary directory used for creating Python virtual environments is assigned insecure world-writable permissions (0o777). [CVSS 7.0 HIGH]
pytest versions up to 9.0.2 contains a vulnerability that allows attackers to cause a denial of service or possibly gain privileges (CVSS 6.8).