What is the CVSS score of CVE-2026-23719?

CVE-2026-23719 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-2026-23719?

Within 24 hours: Inventory all systems running Simcenter Femap and Nastran versions below V2512 and restrict file-handling permissions. Within 7 days: Implement network controls to block untrusted NDB file sources and disable NDB file processing where operationally feasible; notify users not to open NDB files from external sources. Within 30 days: Monitor vendor communications for patch availability and prepare deployment procedures; conduct file integrity monitoring on engineering workstations.

Simcenter Femap CVE-2026-23719

Q: Which versions of Simcenter Femap are affected by CVE-2026-23719?

Simcenter Femap and Nastran users face a HIGH severity vulnerability (CVE-2026-23719) that could allow attackers to execute arbitrary code by sending malicious NDB files.

HIGH

Heap-based Buffer Overflow (CWE-122)

2026-02-10 productcert@siemens.com

Buffer Overflow Heap 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 NDB file
Delivery

Deliver to user via email or website
Exploit

User opens file in Femap/Nastran
Execution

Trigger heap buffer overflow
Impact

Execute arbitrary code with user privileges

Vulnerability Assessment

Weakness	CWE CWE-122 OWASP Top 10:2025 A06:2021 - Vulnerable and Outdated Components ASVS 5.0 V15 - Secure Coding and Architecture Heap buffer bounds checking MITRE ATT&CK 1 technique across 1 tactic: Execution The technique list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 interaction required: victim must open a specially crafted NDB file in Simcenter Femap or Nastran versions prior to V2512. No network vector; local file processing vulnerability.
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

Heap-based buffer overflow in Simcenter Femap and Nastran versions prior to V2512 allows local attackers to achieve arbitrary code execution by crafting malicious NDB files. The vulnerability requires user interaction to trigger and affects all current versions of both products. No patch is currently available, leaving affected systems at risk of privilege escalation and system compromise.

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 application is vulnerable to heap-based buffer overflow while parsing specially crafted NDB 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-122 (Heap-based Buffer Overflow). Affects Simcenter Femap. A vulnerability has been identified in Simcenter Femap (All versions < V2512), Simcenter Nastran (All versions < V2512). The affected application is vulnerable to heap-based buffer overflow while parsing specially crafted NDB 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 face a HIGH severity vulnerability (CVE-2026-23719) that could allow attackers to execute arbitrary code by sending malicious NDB files. Organizations using these CAD/simulation tools for engineering workflows are at risk of data theft, system compromise, and operational disruption. No patch is currently available, requiring immediate mitigation strategies.

Business Impact: High

Compensating Controls

Disable NDB file import/parsing functionality if not critical to operations. Implement strict file whitelisting and block NDB files at email gateways and file transfer points. Segment engineering workstations on isolated networks with restricted internet access. Deploy file sandboxing solutions for untrusted NDB file analysis. Apply principle of least privilege for application accounts. Monitor vendor (Siemens) for patch release and prepare immediate deployment plan upon availability.

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.

Heap Overflow HIGH

A heap overflow occurs when a program writes data beyond the bounds of a buffer allocated in the heap memory region.