TI-2025-07307 Aliases CVE-2025-7987 GHSA-93h3-hm5p-x4r8

Out-of-bounds write in Ashlar-Vellum Graphite

LOW 35CWE-787Published 2025-09-17 · Updated 2025-09-18

Key facts

Attack vector: Local
Privileges required: None
User interaction: Required
Attack complexity: Low
Impact type: Code execution
Confidentiality · integrity · availability: High · High · High
Fix status: No fix listed

Attack profile from CVSS 3.0 · CNA. Fix status from CNA. Impact type from CWE-787 and the CVSS impact.

Summary

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.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV

EPSS 0.0021 11th percentileScored 2026-11-07

Fix No fix listed No fixed version in the sources yet

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation: None
Automatable: No
Technical impact: Total

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

Vendor	Product	Affected versions	Fixed in	Status	Source
Ashlar-Vellum	Graphite	13.0	—	No fix listed	CNA

Graphite VendorAshlar-Vellum Affected 13.0 Fixed in — No fix listed CNA

CPE configurations NVD · 1

CPE	Versions	Role	Vendor
cpe:2.3:a:ashlar:graphite:13.0:::::::*	13.0	Vulnerable	Ashlar-Vellum

cpe:2.3:a:ashlar:graphite:13.0:*:*:*:*:*:*:* Versions 13.0 Vulnerable ·Ashlar-Vellum

Remediation

No fixed version listed by the sources yet.

Timeline

2026-10-02 Threatist record created from CVE-2025-7987
2026-10-03 Alias added: GHSA-93h3-hm5p-x4r8

References

Advisory 1

ZDI-25-641

TI-2023-17142 Out-of-bounds write in Ashlar-Vellum Graphite CVSS 3.1HIGH 8.8
TI-2023-17141 Out-of-bounds write in Ashlar-Vellum Graphite CVSS 3.1HIGH 8.8
TI-2023-17140 Stack-based buffer overflow in Ashlar-Vellum Graphite CVSS 3.1HIGH 8.8
TI-2025-07301 Ashlar-Vellum Graphite VC6 File Parsing Uninitialized Variable Remote Code Execution… CVSS 3.0HIGH 7.8
TI-2025-07298 Ashlar-Vellum Graphite VC6 File Parsing Uninitialized Variable Remote Code Execution… CVSS 3.0HIGH 7.8
TI-2024-12099 Heap-based buffer overflow in Ashlar-Vellum Graphite CVSS 3.1HIGH 7.8

See all 14 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences