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CVE-2025-7983VulnerabilityPublished

CVE-2025-7983: Ashlar-Vellum Graphite · Heap-based Buffer Overflow

Affects Ashlar-Vellum GraphiteSource CVE Database V5

0

Not known to be exploited · CVSS 7.8 High.

Data as of 26 Oct 2026, 08:30 UTC

CVSS 3.0 base score
7.8High
How severe the flaw is on the 0–10 CVSS scale.
EPSS
0.2% chance of exploitation in 30 days – higher than 12% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.
CVSS:3.0/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

Exploitation evidence

  1. Disclosed: evidence found.

    CVE published 17 Sep 2025

  2. Detectable: no evidence on record.

    No public nuclei template indexed

  3. Weaponised: no evidence on record.

    No public exploit code indexed in Metasploit or Exploit-DB

  4. Exploited in the wild: no evidence on record.

    Not in CISA KEV and no source reports exploitation

  5. Observed by OffSeq Mirage: no evidence on record.

    No attack traffic recorded by OffSeq Mirage sensors

A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), the Metasploit, Exploit-DB and nuclei-templates index as of 26 Oct 2026.

What to do

AI-suggested

1. Implement strict email and file filtering to block or quarantine VC6 files from untrusted sources to reduce the risk of malicious file delivery. 2. Educate users on the risks of opening files from unknown or untrusted origins, emphasizing caution with VC6 files. 3. Employ application whitelisting and sandboxing techniques to restrict the execution context of Ashlar-Vellum Graphite, limiting the impact of potential exploitation. 4. Monitor network and endpoint logs for unusual behavior related to Ashlar-Vellum Graphite processes, such as unexpected memory usage or spawning of child processes. 5. Coordinate with Ashlar-Vellum for timely patch deployment once available; until then, consider disabling or restricting the use of VC6 file parsing features if feasible. 6. Utilize endpoint detection and response (EDR) solutions capable of detecting heap-based buffer overflow exploitation techniques. 7. Maintain up-to-date backups of critical design files to enable recovery in case of compromise.

Description

Ashlar-Vellum Graphite VC6 File Parsing Heap-based Buffer Overflow Remote Code Execution Vulnerability. This vulnerability allows remote attackers to execute arbitrary code on affected installations of Ashlar-Vellum Graphite. 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 the length of user-supplied data prior to copying it to a heap-based buffer. An attacker can leverage this vulnerability to execute code in the context of the current process. Was ZDI-CAN-25477.

References

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