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How the CVE Works
The vulnerability (CVE-2025-2013) in Ashlar-Vellum Cobalt arises due to improper handling of CO file parsing, leading to a use-after-free condition. Attackers can craft a malicious CO file that triggers improper memory management when processed by the software. When the application fails to validate object existence before performing operations, it dereferences a freed memory pointer, allowing arbitrary code execution in the context of the current process. Exploitation requires user interaction, such as opening a malicious file or visiting a compromised webpage. The flaw was reported under ZDI-CAN-25186 and carries a critical CVSS 4.0 severity rating due to its potential for remote code execution.
DailyCVE Form
Platform: Ashlar-Vellum Cobalt
Version: Affected versions unspecified
Vulnerability: Use-After-Free RCE
Severity: Critical
Date: 08/15/2025
Prediction: Patch expected by 11/2025
What Undercode Say
Analytics:
strings malicious.co | grep "CORRUPT_HEADER" gdb -ex "disas parse_co_file" ./cobalt_app
How Exploit:
with open("exploit.co", "wb") as f:
f.write(b"\x41" 1024 + struct.pack("<Q", 0xdeadbeef)) Trigger UAF
Protection from this CVE:
– Disable CO file parsing
– Apply vendor patch
– Memory sandboxing
Impact:
– Remote code execution
– System compromise
– Data exfiltration
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Sources:
Reported By: nvd.nist.gov
Extra Source Hub:
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