CVE-2013-2597 is a stack-based buffer overflow vulnerability in Code Aurora ACDB Audio Driver. CISA added it to the Known Exploited Vulnerabilities catalogue on 15 September 2022, which means attackers have used it in real attacks. The Code Aurora audio calibration database (acdb) audio driver contains a stack-based buffer overflow vulnerability that allows for privilege escalation.
What the vulnerability means in this kind of driver
A stack-based buffer overflow in an audio driver means the driver can copy more data into stack memory than it can safely hold. In a low-level component like Code Aurora ACDB Audio Driver, that is especially dangerous because the bug sits close to the kernel boundary and can turn malformed input into code execution or privilege escalation.
This class of flaw matters even when the vulnerable code is “only” part of audio calibration or device configuration. Driver bugs can be reachable through local interfaces, vendor-specific components, or other software that relies on the driver for hardware control. For background on how overflow weaknesses are classified, see the CVE Program and the NIST National Vulnerability Database.
Why an exploited driver overflow is dangerous
Once a stack overflow is reachable in a privileged driver, the security impact is not limited to a crash. Attackers may use it to elevate privileges, escape application-level restrictions, or gain a stronger foothold on the host. That makes the flaw far more serious than a simple reliability defect.
Driver exploitation is also attractive because it can support stealth and persistence. A successful attack can weaken endpoint trust, interfere with security tooling, or create conditions for later privilege abuse. In practice, overflow weaknesses often sit within a broader pattern of memory-safety bugs that are well captured in the CWE Top 25 Guide.
How organisations assess exposure and prioritise response
Exposure assessment starts with asset inventory: identify devices that ship or load the affected audio stack, then determine whether those devices are internet-exposed, externally managed, or used in high-trust roles. Vendor advisories and platform-specific release notes remain the authoritative source for affected versions and fixes.
Because this CVE was added to CISA’s Known Exploited Vulnerabilities catalogue, organisations should treat it as active exploitation risk rather than a theoretical issue. For practical prioritisation, use the Vulnerability Management Guide to anchor remediation in asset scope, KEV status, and verification rather than in severity alone.
Remediation, detection, and post-patch review
The preferred fix is the vendor patch or update that removes the overflow condition. If patching is delayed, reduce exposure by limiting access to the vulnerable component, constraining administrative pathways, and removing unnecessary software or services that can invoke the driver.
After remediation, validate that no exploitation occurred before the patch landed. Review crash logs, privilege changes, unexpected driver faults, and related endpoint alerts. Where there is evidence of compromise, rotate credentials and review adjacent privileged access because a driver-level exploit can be a stepping stone to broader system control.
Risk and Threat Considerations
This vulnerability is dangerous because it combines a memory-corruption primitive with kernel-adjacent privilege potential. If an attacker can reach the vulnerable path, the bug can become a direct route from low-privilege execution to elevated control of the device.
Failure mechanism: malformed input triggers an out-of-bounds write on the stack, allowing adjacent control data to be corrupted and execution flow to be influenced.
Impact: attackers may gain elevated privileges, defeat local security boundaries, and use the compromised system as a foothold for persistence or lateral movement.
Standards & Framework Alignment
This section maps relevant standards and security frameworks to the operational risks and controls described in this guidance.
MITRE ATT&CK addresses the attack and risk surface, while CIS Controls v8 and NIST SP 800-53 Rev 5 set the governance and control requirements practitioners need to meet.
| Framework | Control / Reference | Relevance |
|---|---|---|
| CIS Controls v8 | CIS-7 — Continuous Vulnerability Management | This CVE needs rapid identification, prioritisation, and remediation in exposed assets. |
| Recommendation — Prioritise and remediate KEV-listed driver vulnerabilities using continuous vulnerability management. | ||
| NIST SP 800-53 Rev 5 | SI-2 — Flaw Remediation | Driver overflow defects require tracked remediation and verification of fixes. |
| SI-16 — Memory Protection | A stack-based buffer overflow is a memory-safety failure directly addressed by memory protection controls. | |
| AU-6 — Audit Record Review, Analysis, and Reporting | Post-exploitation review depends on log analysis and anomaly detection around the vulnerable driver. | |
| Recommendation — Track and remediate the vulnerable driver flaw, then verify the fix is deployed. Apply memory-protection controls to reduce the impact of stack corruption in privileged components. Review audit records for driver crashes, privilege changes, and signs of exploitation. | ||
| MITRE ATT&CK | T1068 — Exploitation for Privilege Escalation | The primary danger of this flaw is attacker use of a driver overflow to elevate privileges. |
| Recommendation — Map detections for privilege escalation paths that abuse driver memory corruption. | ||
Practitioner Guidance
Why practitioners should care: KEV-listed driver flaws deserve immediate operational attention because they are already part of real attack activity, not just proof-of-concept research. Prioritise them ahead of routine backlog work when the affected component exists on exposed or high-value systems.
What to watch for: repeated driver crashes, unusual privilege escalation, or unexplained changes in device stability after the vulnerable component is used. Those signals can indicate either exploitation attempts or a successful compromise that needs incident review.
Related resources from NHI Mgmt Group
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Reviewed and updated by the NHIMG editorial team on October 17, 2026.
NHI Mgmt Group — the #1 independent authority on Non-Human Identity, IAM, and Agentic AI security. nhimg.org