CVE-2025-7987: Ashlar-Vellum Graphite · Out-of-bounds Write
Affects Ashlar-Vellum GraphiteSource CVE Database V5
Not known to be exploited · CVSS 7.8 High.
Data as of 26 Oct 2026, 12:55 UTC
- EPSS
- 0.2% chance of exploitation in 30 days – higher than 11% 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:HExploitation evidence
Disclosed: evidence found.
CVE published 17 Sep 2025
Detectable: no evidence on record.
No public nuclei template indexed
Weaponised: no evidence on record.
No public exploit code indexed in Metasploit or Exploit-DB
Exploited in the wildExploited: no evidence on record.
Not in CISA KEV and no source reports exploitation
Observed by OffSeq MirageSeen by 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
Affected software
| Product | Affected | Fixed in |
|---|---|---|
| Ashlar-Vellum Graphite | Affected
| Fixed in– |
AI-suggested
European organizations should implement the following specific mitigations: 1) Restrict the opening of VC6 files from untrusted or unknown sources, especially those received via email or downloaded from the internet. 2) Employ robust email filtering and endpoint security solutions capable of detecting and blocking malicious file attachments or payloads targeting Ashlar-Vellum Graphite. 3) Educate users on the risks of opening unsolicited or suspicious files and enforce strict policies regarding file handling. 4) Use application whitelisting and sandboxing techniques to limit the execution context of Ashlar-Vellum Graphite, reducing the impact of potential exploitation. 5) Monitor systems for unusual behavior indicative of exploitation attempts, such as unexpected process activity or memory corruption signals. 6) Maintain up-to-date backups of critical design data to enable recovery in case of compromise. 7) Engage with Ashlar-Vellum for timely updates or patches and plan for rapid deployment once available. 8) Consider network segmentation to isolate systems running Graphite from broader enterprise networks to limit lateral movement.
Description
Ashlar-Vellum Graphite 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 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 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-25756.