CVE-2025-33195 Overview
CVE-2025-33195 affects NVIDIA DGX Spark GB10 systems running vulnerable SROOT firmware. The flaw resides in memory buffer handling routines within the firmware. An authenticated local attacker can trigger unexpected memory buffer operations that fall outside intended bounds. Successful exploitation may lead to data tampering, denial of service, or escalation of privileges on the affected AI workstation.
The issue is categorized under [CWE-119] (Improper Restriction of Operations within the Bounds of a Memory Buffer). NVIDIA has published an advisory and firmware updates to address the flaw.
Critical Impact
A local attacker with low privileges can escalate to higher privileges, tamper with firmware-level data, or render the DGX Spark GB10 system unavailable through firmware-level memory corruption.
Affected Products
- NVIDIA DGX Spark (GB10 hardware platform)
- NVIDIA DGX OS
- SROOT firmware component shipped with DGX Spark GB10
Discovery Timeline
- 2025-11-25 - CVE-2025-33195 published to the National Vulnerability Database (NVD)
- 2026-06-17 - Last updated in NVD database
Technical Details for CVE-2025-33195
Vulnerability Analysis
The vulnerability exists in the SROOT firmware component of NVIDIA DGX Spark GB10 systems. SROOT operates at a privileged firmware layer, providing low-level services to the platform. Improper validation of buffer boundaries during firmware operations allows an attacker to influence memory beyond intended limits.
Because the flaw sits in firmware rather than in user-space software, exploitation directly impacts the trust foundation of the platform. Data tampering at this layer can undermine downstream integrity checks performed by the operating system and AI workloads. Denial of service can render expensive DGX Spark hardware inoperable until firmware recovery. Privilege escalation from a low-privileged local account to elevated firmware or operating system context breaks the platform's isolation model.
Root Cause
The root cause is improper restriction of operations within the bounds of a memory buffer, tracked as [CWE-119]. The SROOT firmware performs memory operations without adequately validating that source or destination buffers stay within allocated regions. This class of defect commonly enables read or write access to adjacent memory, corrupting control data or executable code paths within the firmware image.
Attack Vector
Exploitation requires local access to the DGX Spark GB10 system and low privileges on the host. No user interaction is required. An attacker with a shell on the DGX OS installation can invoke the vulnerable firmware interface and supply crafted inputs that trigger the out-of-bounds buffer operation.
Because the attack vector is local, the primary risk profile involves malicious insiders, compromised service accounts, or an attacker who has already established an initial foothold through another vector. No verified public proof-of-concept exploit code is available at this time. Refer to the NVIDIA Support Document for technical remediation details.
Detection Methods for CVE-2025-33195
Indicators of Compromise
- Unexpected firmware error messages or SROOT-related kernel log entries on DGX Spark GB10 systems
- Unexplained system reboots, crashes, or hardware watchdog resets on affected hardware
- Unauthorized local processes accessing firmware update or management interfaces
- Integrity check failures for firmware components or unexpected changes in reported firmware measurements
Detection Strategies
- Monitor DGX OS system logs for anomalous activity involving firmware interfaces, privileged syscalls, and process privilege transitions
- Compare running firmware versions against NVIDIA's published fixed versions and flag systems still exposing vulnerable SROOT builds
- Baseline expected local user activity on DGX Spark systems and alert on deviations, particularly from accounts that should not interact with firmware tooling
Monitoring Recommendations
- Ingest DGX OS host telemetry, authentication events, and process execution data into a centralized analytics platform for correlation
- Track firmware version inventory for all DGX Spark GB10 assets and alert when systems drift from the NVIDIA-recommended patched baseline
- Enable auditing on tools that interact with SROOT or platform firmware and alert on invocation by non-administrative users
How to Mitigate CVE-2025-33195
Immediate Actions Required
- Apply the NVIDIA firmware update referenced in the NVIDIA Support Document to all DGX Spark GB10 systems
- Restrict local access to DGX Spark GB10 hardware to trusted administrators only and audit existing local accounts
- Review authentication logs and shell history on affected systems for signs of unauthorized local activity
- Enforce least-privilege access for service accounts and workloads running on DGX OS
Patch Information
NVIDIA has released firmware updates addressing CVE-2025-33195 for the DGX Spark GB10 platform. Consult the NVIDIA Support Document for the specific fixed firmware version and update procedure. Additional details are available in the NVD CVE-2025-33195 Detail and the CVEs.org CVE-2025-33195 Record.
Workarounds
- No official workarounds are documented by NVIDIA; firmware update is the required remediation path
- Until patching is complete, limit local logins on DGX Spark GB10 systems to a minimal set of vetted administrators
- Isolate affected DGX Spark GB10 systems on management networks with strict access controls to reduce opportunities for local compromise
- Enable host-based monitoring and file integrity monitoring on DGX OS to detect suspicious local activity prior to firmware remediation
Disclaimer: This content was generated using AI. While we strive for accuracy, please verify critical information with official sources.
