CVE-2023-39936 Ashlar-Vellum Graphite Out-of-bounds Read
An out-of-bounds read in Ashlar-Vellum Graphite allows attackers to execute arbitrary code via malicious VC6 files.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Local or same network only
- Victim action needed
- A user has to click or open something
- Fix
- None listed
What is CVE-2023-39936?
CVE-2023-39936 is a high-severity memory corruption vulnerability in Ashlar-Vellum Graphite, published on 26 Oct 2023. It can only be exploited from the same machine or local network, and only if a user opens a file or follows a link.
Official description
In Ashlar-Vellum Graphite v13.0.48, the affected application lacks proper validation of user-supplied data when parsing VC6 files. This could lead to an out-of-bounds read. An attacker could leverage this vulnerability to execute arbitrary code in the context of the current process.
Weakness: CWE-125
Which versions are affected by CVE-2023-39936?
It affects 1 product.
Products include Ashlar Graphite.
How do I fix CVE-2023-39936?
No fix has been published for CVE-2023-39936 yet. Limit exposure of the affected software until one is available.
Upgrade to the fixed version. Memory-safe languages, compiler hardening and fuzzing prevent most new cases. More about Memory corruption.
Is CVE-2023-39936 being exploited?
There is no known exploitation of CVE-2023-39936 in the wild and no public exploit code.
Other vulnerabilities in Ashlar-Vellum Graphite
- CVE-2025-7978 Ashlar-Vellum Graphite VC6 File Parsing Uninitialized Variable Remote Code Execution Vulnerability
- CVE-2025-7979 Ashlar-Vellum Graphite VC6 File Parsing Stack-based Buffer Overflow Remote Code Execution Vulnerability
- CVE-2025-7980 Ashlar-Vellum Graphite VC6 File Parsing Out-Of-Bounds Write Remote Code Execution Vulnerability
- CVE-2025-7981 Ashlar-Vellum Graphite VC6 File Parsing Uninitialized Variable Remote Code Execution Vulnerability
- CVE-2025-7983 Ashlar-Vellum Graphite VC6 File Parsing Heap-based Buffer Overflow Remote Code Execution Vulnerability
Sources
Also known as GHSA-3f6x-6xxh-4m9v.