CVE-2026-81305 Overview
CVE-2026-81305 affects CM2507 IP cameras that automatically execute a predetermined script from removable media without verifying its authenticity or integrity. An attacker with physical access can insert removable media containing a malicious script, which the device executes in its own security context. The flaw maps to [CWE-829: Inclusion of Functionality from Untrusted Control Sphere]. Successful exploitation grants arbitrary code execution on the camera, exposing confidentiality, integrity, and availability of the device. The vulnerability was published to the National Vulnerability Database on 2026-09-18 and cataloged under CISA ICS Advisory ICSA-26-258-08.
Critical Impact
Physical insertion of crafted removable media results in arbitrary code execution on CM2507 IP cameras with no authentication, no user interaction, and full compromise of device confidentiality, integrity, and availability.
Affected Products
- CM2507 IP cameras
- Devices configured to autorun scripts from removable media
- Deployments referenced in CISA ICS Advisory ICSA-26-258-08
Discovery Timeline
- 2026-09-18 - CVE-2026-81305 published to NVD
- 2026-09-19 - Last updated in NVD database
Technical Details for CVE-2026-81305
Vulnerability Analysis
The CM2507 IP camera firmware includes an autorun mechanism that locates and executes a predetermined script file from attached removable media. The device performs no cryptographic signature check, no hash validation, and no origin verification before invoking the script. Any interpreter or shell invoked by the autorun routine runs with the privileges of the camera's system process. An attacker who inserts prepared media into the device can therefore run arbitrary commands, modify firmware components, exfiltrate video streams, or pivot into the connected operational technology (OT) network.
Root Cause
The root cause is the inclusion of functionality from an untrusted control sphere, classified as [CWE-829]. The firmware treats removable media as a trusted source for executable content. There is no allowlist of signed scripts, no integrity check against a known-good baseline, and no operator confirmation before execution. This design assumption breaks whenever the device is deployed in a physically accessible location.
Attack Vector
Exploitation requires physical access to the camera and the ability to attach removable media containing the expected script filename and path. Once media is inserted and the device reads it, the payload runs without authentication or user interaction. Because the attack vector is physical, remote or network-based exploitation is not applicable, but insider threats, supply chain interception, and unattended field deployments remain realistic scenarios for CM2507 IP cameras used in surveillance and industrial control environments.
No verified proof-of-concept code has been published. Refer to CISA ICS Advisory ICSA-26-258-08 and the GitHub CSAF Data File for authoritative technical details.
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Stop Exploit AttemptsDetection Methods for CVE-2026-81305
Indicators of Compromise
- Unexpected script files, binaries, or shell artifacts present on removable media inserted into CM2507 cameras.
- Unscheduled reboots, firmware modifications, or new outbound connections originating from camera IP addresses.
- Configuration changes on the device that do not correspond to authorized administrator activity.
Detection Strategies
- Audit physical access logs and video coverage of deployed CM2507 units to identify unauthorized handling of the device or its media slots.
- Baseline camera firmware and configuration, then alert on drift using periodic integrity checks against the known-good hash.
- Monitor network egress from camera VLANs for anomalous protocols, new destinations, or command-and-control style beaconing.
Monitoring Recommendations
- Forward camera syslog and OT network flow data to a centralized analytics platform for correlation with physical access events.
- Enable alerts on device restarts, storage-media mount events, and any script execution reported by the camera.
- Include CM2507 cameras in scheduled OT asset inventories and tamper-evident seal inspections.
How to Mitigate CVE-2026-81305
Immediate Actions Required
- Restrict physical access to CM2507 IP cameras using locked enclosures, tamper-evident seals, and monitored installation locations.
- Disable or physically block removable media interfaces on deployed devices where the autorun feature is not operationally required.
- Review CISA ICS Advisory ICSA-26-258-08 and apply any vendor-provided firmware updates as soon as they become available.
Patch Information
No vendor patch URL is listed in the enriched CVE data at the time of publication. Consult the CISA ICS Advisory ICSA-26-258-08 for the current remediation status and any firmware updates released by the device manufacturer.
Workarounds
- Segment CM2507 cameras onto an isolated OT VLAN with strict egress filtering to limit post-exploitation movement.
- Enforce a physical-security policy requiring dual-person integrity for any maintenance involving removable media on cameras.
- Deploy tamper detection on camera housings and log all events to a centralized monitoring system for correlation.
Disclaimer: This content was generated using AI. While we strive for accuracy, please verify critical information with official sources.
