CVE-2025-41392

Code execution via malformed AR file parsing

Published Aug 18, 2025 · Updated Aug 19, 2025

Out-of-bounds read in Ashlar-Vellum desktop CAD products before 12.6.1204.204 allows attackers to execute code via a crafted AR file. The AR-file parser fails to validate user-supplied data before performing an out-of-bounds memory read; no finer code-level locus is public. Execution occurs in the current process after a user opens or imports the file, requiring attacker-controlled file delivery and active user interaction.

CVSS severity8.4
High
EPSS probability0.16%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Out-of-bounds read in Ashlar-Vellum desktop CAD products before 12.6.1204.204 allows attackers to execute code via a crafted AR file. The AR-file parser fails to validate user-supplied data before performing an out-of-bounds memory read; no finer code-level locus is public. Execution occurs in the current process after a user opens or imports the file, requiring attacker-controlled file delivery and active user interaction.

The record

CVE
CVE-2025-41392
Published
Aug 18, 2025
Updated
Aug 19, 2025
Vendor
Ashlar-Vellum
Product
Cobalt
Classifications
CWE-125, T1204.002
Attack vector
local
Privileges
unauthenticated

Timeline

How it unfolded

  1. Aug 18, 2025CVE publishedPublication date reported by the CVE source.
  2. Aug 19, 2025Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

Compare your product and version with the public record. A matching version still requires validation against your environment.

Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=0 <12.6.1204.204

What conditions does exploitation require?

Attack vectorlocal
Required privilegesunauthenticated

What is affected?

Ashlar-Vellum · Cobaltversion=0 <12.6.1204.204
Ashlar-Vellum · Cobalt Shareversion=0 <12.6.1204.204
Ashlar-Vellum · Xenonversion=0 <12.6.1204.204
Ashlar-Vellum · Argonversion=0 <12.6.1204.204
Ashlar-Vellum · Lithium CADversion=0 <12.6.1204.204

Published CVSS scores

7.8ICS-CERTCVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
8.4ICS-CERTCVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:A/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectorlocal
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-125Out-of-bounds Read
T1204.002Malicious File

Public exploit references

No public exploit references are available in this record.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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