PT-2025-42542 · Ashlar Vellum+1 · Cobalt

Published 2025-10-16 · Updated 2025-11-04 · CVE-2025-11463

Positive Technologies (AI Summary)

CVSS v3.1

7.8

High

Base vector

AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

Name of the Vulnerable Software and Affected Versions Ashlar-Vellum Cobalt XE (affected versions not specified)

Description A flaw exists in the parsing of XE files within Ashlar-Vellum Cobalt, stemming from insufficient validation of user-supplied data. This can lead to an integer overflow during buffer allocation, potentially allowing a remote attacker to execute arbitrary code. User interaction is required, such as visiting a malicious page or opening a malicious file, to trigger the issue. The attacker can execute code within the context of the current process.

Recommendations At the moment, there is no information about a newer version that contains a fix for this vulnerability.

RCE

Integer Overflow

Weakness Enumeration

CWE-190

Related Identifiers

CVE-2025-11463

ZDI-25-954

Affected Products

Cobalt

References · 7

• https://nvd.nist.gov/vuln/detail/CVE-2025-11463 · Security Note
• https://zerodayinitiative.com/advisories/ZDI-25-954 · Security Note
• https://osv.dev/vulnerability/CVE-2025-11463 · Vendor Advisory
• https://t.me/CVEtracker/36112 · Telegram Post
• https://t.me/cveNotify/141725 · Telegram Post
• https://t.me/cveNotify/140896 · Telegram Post
• https://twitter.com/CVEnew/status/1983622501155344689 · Twitter Post