ZDI-CAN-28757: Security vulnerability
Published Nov 4, 2026
This vulnerability allows remote attackers to execute arbitrary code on affected installations of Ashlar-Vellum Cobalt. User interaction is required to exploit this vulnerability in that the target must visit a malicious page or open a malicious file. The ZDI has assigned a CVSS rating of 7.8. The following CVEs are assigned: CVE-2026-121742.
Frequently Asked Questions
1
What does an attacker need to exploit this issue?
The attacker must cause the target to visit a malicious page or open a malicious file. Exploitation can then result in arbitrary code execution on the affected installation.
2
Is this remotely exploitable without user interaction?
No. Although the vulnerability can be exploited remotely, it requires the target to visit a malicious page or open a malicious file.