What is the CVSS score of CVE-2026-23715?

CVE-2026-23715 has a CVSS 3.1 base score of 7.8 (High). CVSS vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H. EPSS exploitation probability: 0.0%.

How to fix or mitigate CVE-2026-23715?

Within 24 hours: Identify all systems running Simcenter Femap and Nastran versions below V2512 and restrict file sharing/import capabilities where feasible. Within 7 days: Implement network segmentation to isolate affected systems, disable XDB file parsing if not critical to operations, and establish user awareness training on suspicious file handling. Within 30 days: Monitor Siemens security advisories for patch availability, conduct vendor risk assessment, and plan upgrade to V2512 or later immediately upon release.

Simcenter Femap CVE-2026-23715

HIGH

Out-of-bounds Write (CWE-787)

2026-02-10 productcert@siemens.com

Buffer Overflow Siemens Simcenter Femap Simcenter Nastran

7.8

CVSS 3.1 · NVD

View

Attack ChainAIDerived

Hypothetical attack flow derived from CVE metadata – not a confirmed exploit chain

Access

Craft malicious XDB file
Delivery

User opens file in Femap/Nastran
Exploit

Parser reads out-of-bounds memory
Execution

Write arbitrary data to heap
Impact

Execute code as current user

Vulnerability Assessment

Weakness	CWE CWE-787 OWASP Top 10:2025 A06:2021 - Vulnerable and Outdated Components ASVS 5.0 V15 - Secure Coding and Architecture Bounds checking, write limits MITRE ATT&CK 2 techniques across 2 tactics: Execution, Privilege Escalation The technique list with ATT&CK links and the kill-chain view is part of the Basic plan and up. Sign in to read
Exploitation Conditions	User must open a malicious XDB file in Simcenter Femap or Simcenter Nastran versions before V2512. No special configuration required; vulnerability triggers during normal file parsing of crafted XDB format.
Impact	CVSS 7.8 (HIGH). Attack vector: Local. Complexity: Low. Privileges required: None. User interaction: Required.
Exploit ScenarioDerived	An attacker could exploit this vulnerability to execute code in the context of the current process.

This Week Schedule remediation this week. Why: HIGH severity (CVSS 7.0-8.9).

No patch listed yet 0.0% exploitation probability (EPSS)

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AnalysisAIv1 – Mar 12, 2026

Arbitrary code execution in Simcenter Femap and Nastran versions prior to V2512 results from an out-of-bounds write flaw triggered by parsing malicious XDB files. Local attackers with user interaction can exploit this vulnerability to execute arbitrary code with the privileges of the affected application. No patch is currently available for this high-severity vulnerability.

Earlier versions of this analysis (1)

v1 Mar 12, 2026 - 22:02 CVSS 7.8

A vulnerability has been identified in Simcenter Femap (All versions < V2512), Simcenter Nastran (All versions < V2512). The affected applications contains an out of bounds write vulnerability while parsing specially crafted XDB files. [CVSS 7.8 HIGH]

RemediationAI

Monitor vendor advisories for a patch. Enable ASLR, DEP/NX, and stack canaries where possible.

Affects your stack

Find out whether the stacks and servers you run are on an affected version.

Checking this CVE against your own stacks and servers is part of the Basic plan and up.

Technical ContextAI · show details

Classified as CWE-787 (Out-of-bounds Write). Affects Simcenter Femap. A vulnerability has been identified in Simcenter Femap (All versions < V2512), Simcenter Nastran (All versions < V2512). The affected applications contains an out of bounds write vulnerability while parsing specially crafted XDB files. This could allow an attacker to execute code in the context of the current process.

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Exploit and PoC references, threat intelligence from 22 sources

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Severity by source

NVD PRIMARY 7.8 HIGH

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

Primary rating from NVD · only source for this CVE.

CVSS VectorNVD

Attack Vector

Local

Attack Complexity

Low

Privileges Required

None

User Interaction

Required

Scope

Unchanged

Confidentiality

High

Integrity

High

Availability

High

DescriptionCVE.org

Executive ViewAI

Why It Matters

Simcenter Femap and Nastran users are exposed to a high-severity vulnerability affecting all versions below V2512 that could allow attackers to execute code or crash applications through malicious XDB files. Organizations using these CAD/simulation tools for engineering workflows face potential data compromise, intellectual property theft, or operational disruption. Immediate action is required as no vendor patch is currently available.

Business Impact: High

Compensating Controls

Disable XDB file import/parsing functionality if not operationally critical; implement strict network access controls and file integrity monitoring on systems running affected versions; require manual validation and sandboxing of XDB files from untrusted sources; monitor process execution for abnormal behavior; restrict user permissions to prevent file execution from temporary directories; consider network segmentation to isolate CAD/simulation environments from critical systems.

Threat Intelligence Overview

EPSS Score

0.0%

Top 100% exploitable

Data Quality

3 sources

Confidence: Low

NVD

CVE.org

EPSS

How this decision was reached

The engine reads each signal below and applies a fixed list of rules from top to bottom. The first rule that matches sets the recommended action – like a statement, every line is shown.

SignalValue

Severity HIGH

CISA KEV No

Public POC No

EPSS 0.0%

Patch available No

Active threat No

Deciding rule

HIGH severity (CVSS 7.0-8.9)

What every action level means

Emergency Immediate action required. Criteria: CRITICAL + in CISA KEV (actively exploited) without patch, OR CRITICAL + EPSS > 30% without patch, OR CRITICAL + active threat signals without patch.

Act Now Prioritize within 24-48h. Criteria: in KEV with patch available, OR CRITICAL + public POC, OR HIGH + EPSS > 10%, OR CRITICAL + active threat, OR any CRITICAL severity.

This Week Schedule remediation this week. Criteria: HIGH severity (CVSS 7.0-8.9). Patch within normal change window.

This Month Plan within 30 days. Criteria: MEDIUM severity (CVSS 4.0-6.9), lower exploitation probability. Include in regular patch cycle.

Monitor Track and reassess. Criteria: LOW severity (CVSS 0.1-3.9), minimal exploitation risk. No immediate action needed.

SSVC AssessmentENISA

SSVC Decision· derived

Scheduled

Exploitation· derived

None

System Exposure· derived

Small

Automatable· derived

Human Impact

High

Priority Score

Low Medium High Critical

KEV: 0

EPSS: 0

CVSS: +39

PoC: 0

Weaponized: 0

Threat intel: 0

Gov advisory: 0

Attack Technique

Buffer Overflow HIGH

A buffer overflow occurs when a program writes more data to a memory buffer than it was allocated to hold, causing the excess data to spill into adjacent memory regions.