CVE-2025-7977CWE-125

CVE-2025-7977

High · published September 18, 2025

CVSS v3.0
7.8
EPSS
0%
Percentile
11.9
In the wild
Unconfirmed
What it is

Ashlar-Vellum Cobalt LI File Parsing Out-Of-Bounds Read Remote Code Execution Vulnerability. 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 specific flaw exists within the parsing of LI files. The issue results from the lack of proper validation of user-supplied data, which can result in a read before the start of an allocated buffer. An attacker can leverage this vulnerability to execute code in the context of the current process. Was ZDI-CAN-25354.

The record
Technical detail
CVSS v3.0
7.8 · HIGH
Vector
CVSS:3.0/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
CVSS v4.0
Not supplied
EPSS
0.00220 · 11.9th percentile
Weakness
CWE-125 · Out-of-bounds Read
Published
2025-09-18T01:15Z
Affected products (1)
ProductVersionsFixed in
ashlar/cobaltall versions—
References (1)
EPSS history
Timeline
  • 17 SEP 20:51Z
    Ashlar-Vellum Cobalt LI File Parsing Out-Of-Bounds Read Remote Code Execution Vulnerability
    cvelistv5