Ashlar-Vellum Cobalt VC6 File Parsing Out-Of-Bounds Write Remote Code Execution Vulnerability. This vulnerability allows remote attackers to execute arbitrary code on affected installations of Ashlar-Vellum Cobalt. User interaction is required to exploit this vulnerability in that the target must visit a malicious page or open a malicious file.
The specific flaw exists within the parsing of VC6 files. The issue results from the lack of proper validation of user-supplied data, which can result in a write past the end of an allocated buffer. An attacker can leverage this vulnerability to execute code in the context of the current process. Was ZDI-CAN-25254.
                
            Metrics
Affected Vendors & Products
References
        | Link | Providers | 
|---|---|
| https://www.zerodayinitiative.com/advisories/ZDI-25-124/ | 
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History
                    Fri, 08 Aug 2025 16:30:00 +0000
| Type | Values Removed | Values Added | 
|---|---|---|
| CPEs | cpe:2.3:a:ashlar:cobalt:12.0.1204.91:*:*:*:*:*:*:* | 
Fri, 11 Jul 2025 13:45:00 +0000
| Type | Values Removed | Values Added | 
|---|---|---|
| Metrics | 
        
        
        epss
         
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        epss
         
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Mon, 07 Jul 2025 18:30:00 +0000
| Type | Values Removed | Values Added | 
|---|---|---|
| First Time appeared | 
        
        Ashlar
         Ashlar cobalt  | 
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| CPEs | cpe:2.3:a:ashlar:cobalt:1204.91:*:*:*:*:*:*:* | |
| Vendors & Products | 
        
        Ashlar
         Ashlar cobalt  | 
Wed, 12 Mar 2025 15:15:00 +0000
| Type | Values Removed | Values Added | 
|---|---|---|
| Metrics | 
        
        ssvc
         
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Tue, 11 Mar 2025 21:00:00 +0000
| Type | Values Removed | Values Added | 
|---|---|---|
| Description | Ashlar-Vellum Cobalt VC6 File Parsing Out-Of-Bounds Write Remote Code Execution Vulnerability. This vulnerability allows remote attackers to execute arbitrary code on affected installations of Ashlar-Vellum Cobalt. User interaction is required to exploit this vulnerability in that the target must visit a malicious page or open a malicious file. The specific flaw exists within the parsing of VC6 files. The issue results from the lack of proper validation of user-supplied data, which can result in a write past the end of an allocated buffer. An attacker can leverage this vulnerability to execute code in the context of the current process. Was ZDI-CAN-25254. | |
| Title | Ashlar-Vellum Cobalt VC6 File Parsing Out-Of-Bounds Write Remote Code Execution Vulnerability | |
| Weaknesses | CWE-787 | |
| References | 
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| Metrics | 
        
        cvssV3_0
         
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Status: PUBLISHED
Assigner: zdi
Published: 2025-03-11T20:43:06.042Z
Updated: 2025-03-12T14:41:17.693Z
Reserved: 2025-03-05T23:40:23.518Z
Link: CVE-2025-2020
Updated: 2025-03-12T14:25:48.502Z
Status : Analyzed
Published: 2025-03-11T21:15:53.477
Modified: 2025-08-08T16:27:23.753
Link: CVE-2025-2020
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