CVE-2024-12677 Overview
CVE-2024-12677 is an insecure deserialization vulnerability [CWE-502] in Delta Electronics DTM Soft. The software deserializes untrusted objects, allowing an attacker to execute arbitrary code on the local system. Exploitation requires user interaction, such as opening a crafted file processed by DTM Soft. Delta Electronics DTM Soft is a Device Type Manager utility used in industrial control system (ICS) environments to configure field devices. CISA published advisory ICSA-24-354-03 describing the flaw and coordinated remediation guidance with the vendor.
Critical Impact
Successful exploitation results in arbitrary code execution in the context of the DTM Soft user, compromising confidentiality, integrity, and availability of the affected ICS engineering workstation.
Affected Products
- Delta Electronics DTM Soft
- Industrial control system engineering workstations running DTM Soft
- Deployments referenced in CISA ICS Advisory ICSA-24-354-03
Discovery Timeline
- 2024-12-20 - CVE-2024-12677 published to the National Vulnerability Database
- 2026-06-17 - Last updated in NVD database
Technical Details for CVE-2024-12677
Vulnerability Analysis
CVE-2024-12677 is an insecure deserialization flaw classified under [CWE-502]. DTM Soft reconstructs serialized objects from data supplied by the user without validating the object type or contents. An attacker who supplies a crafted serialized payload can force the application to instantiate arbitrary classes during deserialization. This behavior leads to arbitrary code execution within the DTM Soft process. The attack vector is local and requires user interaction, meaning an operator must open or process an attacker-supplied artifact. Because DTM Soft runs on engineering workstations that often manage field devices, code execution on those hosts can enable lateral movement into operational technology (OT) networks. The Common Weakness Enumeration entry [CWE-502] documents the general pattern of trusting serialized input without validation.
Root Cause
The root cause is the deserialization of untrusted input without type filtering, integrity checks, or a restrictive allow-list of permitted classes. When gadget chains are reachable in the loaded assemblies, the deserialization process invokes attacker-controlled logic during object reconstruction.
Attack Vector
An attacker crafts a malicious serialized object and delivers it to an ICS engineer through email, shared storage, or a project file. When the target opens or imports the artifact in DTM Soft, the application deserializes the payload and executes attacker-controlled code with the privileges of the current user.
No verified public proof-of-concept code is available. Refer to the CISA ICS Advisory ICSA-24-354-03 for vendor-supplied technical detail.
Detection Methods for CVE-2024-12677
Indicators of Compromise
- Unexpected child processes spawned by DTM Soft executables, particularly command interpreters such as cmd.exe, powershell.exe, or rundll32.exe
- DTM Soft project files or serialized payloads received from untrusted sources or arriving through email attachments and removable media
- Outbound network connections initiated by DTM Soft to non-vendor infrastructure shortly after a file is opened
Detection Strategies
- Alert on process-lineage anomalies where DTM Soft spawns scripting engines, LOLBins, or unsigned binaries
- Monitor file writes from DTM Soft into user-writable directories such as %APPDATA%, %TEMP%, and startup folders
- Correlate DTM Soft file-open events with subsequent authentication or reconnaissance activity on the same host
Monitoring Recommendations
- Enable command-line and process-creation auditing (Windows Event ID 4688 with command-line logging) on engineering workstations
- Forward endpoint telemetry from ICS hosts to a centralized data lake and apply behavioral analytics to surface deserialization exploitation patterns
- Track distribution of DTM Soft project files across file shares to identify potentially malicious artifacts
How to Mitigate CVE-2024-12677
Immediate Actions Required
- Apply the latest DTM Soft release available from the Delta Electronics Download Center
- Restrict DTM Soft use to authorized engineering workstations and enforce least privilege for operators
- Instruct users to open project files and serialized artifacts only from trusted, verified sources
Patch Information
Delta Electronics distributes updated DTM Soft versions through its Download Center. Review CISA ICS Advisory ICSA-24-354-03 for the specific fixed version and vendor mitigation guidance, then deploy the update to all affected engineering workstations.
Workarounds
- Isolate ICS engineering workstations on segmented networks with no direct internet access, following CISA defense-in-depth recommendations for ICS environments
- Block DTM Soft project files and serialized payloads at email and web gateways when they originate from external senders
- Apply application allow-listing to prevent DTM Soft from spawning scripting hosts or unsigned executables
- Disable or restrict removable media on hosts running DTM Soft to limit delivery paths for malicious files
Disclaimer: This content was generated using AI. While we strive for accuracy, please verify critical information with official sources.
