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VulnerabilityPublished

CVE-2025-7981: Ashlar-Vellum Graphite · Use of Uninitialized Variable

Affects Ashlar-Vellum GraphiteSource CVE Database V5

0

Not known to be exploited · CVSS 7.8 High.

Data as of 26 Oct 2026, 12:55 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 14% 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. Immediate mitigation should focus on user awareness and training to prevent opening untrusted VC6 files or visiting suspicious websites.
  2. Implement strict email and web filtering to block or quarantine potentially malicious attachments and links.
  3. Employ application whitelisting to restrict execution of unauthorized files and scripts.
  4. Use endpoint detection and response (EDR) tools to monitor for anomalous behavior indicative of exploitation attempts.
  5. Isolate systems running Ashlar-Vellum Graphite from critical networks where possible to limit lateral movement.
  6. Regularly back up important data and verify backup integrity to enable recovery in case of compromise.
  7. Monitor vendor communications closely for patches or updates and apply them promptly once available.
  8. Consider deploying sandbox environments to safely open and analyze VC6 files before use.
  9. Review and tighten user privileges to minimize the impact of potential code execution. These measures go beyond generic advice by focusing on specific attack vectors and operational controls relevant to this vulnerability.

Description

Ashlar-Vellum Graphite VC6 File Parsing Uninitialized Variable 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 initialization of memory prior to accessing it. An attacker can leverage this vulnerability to execute code in the context of the current process. Was ZDI-CAN-25475.

References

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