CVE-2025-26853

Critical

Published: 20 March 2025

Published

20 March 2025

Modified

23 April 2025

KEV Added

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Patch

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CVSS Score 10.0 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H

EPSS Score 0.0040 60.8th percentile

Risk Priority 20 60% EPSS · 20% KEV · 20% CVSS

Summary

CVE-2025-26853 is a critical-severity Incorrect Authorization (CWE-863) vulnerability in Descor Infocad. Its CVSS base score is 10.0 (Critical).

Operationally, exploitation aligns with the MITRE ATT&CK technique Exploit Public-Facing Application (T1190); ranked in the top 39.2% of CVEs by exploit likelihood; it is not currently listed in the CISA KEV catalog.

The strongest mitigations our analysis identified are NIST 800-53 AC-24 (Access Control Decisions) and AC-25 (Reference Monitor).

Threat & Defense at a Glance

What attackers do: exploitation maps to Exploit Public-Facing Application (T1190). What defenders deploy: see the NIST 800-53 controls recommended below.

Threat & Defense Details

Mitigating Controls (NIST 800-53 r5)AI

AC-3 Access Enforcement good match

prevent

Directly enforces approved authorizations for access to system resources, preventing exploitation of the broken authorization schema by unauthenticated remote attackers.

AC-24 Access Control Decisions good match

prevent

Requires system access control decisions based on defined policies, addressing the incorrect authorization logic (CWE-863/862) in DESCOR INFOCAD.

AC-25 Reference Monitor good match

prevent

Mandates a reference monitor mechanism to mediate and enforce access control policies, mitigating flaws in the application's authorization schema.

MITRE ATT&CK Enterprise TechniquesAI

T1190 Exploit Public-Facing Application Initial Access

Adversaries may attempt to exploit a weakness in an Internet-facing host or system to initially access a network.

attack.mitre.org →

Why these techniques?

Broken authorization (CWE-862/863) in a network-accessible application (AV:N) directly enables remote unauthenticated exploitation for initial access and full system compromise, mapping to T1190: Exploit Public-Facing Application.

Confidence: HIGH · MITRE ATT&CK Enterprise v19.0

NVD Description

DESCOR INFOCAD 3.5.1 and before and fixed in v.3.5.2.0 has a broken authorization schema.

Deeper analysisAI

CVE-2025-26853 is a critical vulnerability in DESCOR INFOCAD versions 3.5.1 and prior, stemming from a broken authorization schema as indicated by associated CWEs-863 (Incorrect Authorization) and CWE-862 (Missing Authorization). The issue received a perfect CVSS v3.1 base score of 10.0 (AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H), highlighting its severity due to network accessibility, low attack complexity, no required privileges or user interaction, and broad impacts across confidentiality, integrity, and availability with a changed scope. It was published on 2025-03-20.

Unauthenticated attackers can exploit this vulnerability remotely over the network with minimal effort, bypassing authorization controls to gain unauthorized access to the affected INFOCAD software. Successful exploitation enables high-impact outcomes, including complete compromise of confidentiality (e.g., data exposure), integrity (e.g., data manipulation), and availability (e.g., denial of service), potentially leading to full system control given the scope change.

Advisories point to mitigation via patching, with the vulnerability fixed in INFOCAD version 3.5.2.0 as detailed in the official changelog. Security practitioners should reference the DESCOR INFOCAD product page and the specific changelog entry on broken authorization schema for deployment guidance and verification.