CVE-2026-23719

Code execution via NDB heap overflow

Published Feb 10, 2026 · Updated Feb 10, 2026

Heap-based buffer overflow in Siemens Simcenter Femap and Simcenter Nastran before 2512 allows attackers to execute code via an NDB file. The NDB parser writes beyond a heap buffer when it processes specially crafted file content; Siemens has not disclosed the affected routine or field. Execution requires a local user to open an untrusted file, and successful exploitation runs code with the current process's privileges.

CVSS severity7.3
High
EPSS probability0.14%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Heap-based buffer overflow in Siemens Simcenter Femap and Simcenter Nastran before 2512 allows attackers to execute code via an NDB file. The NDB parser writes beyond a heap buffer when it processes specially crafted file content; Siemens has not disclosed the affected routine or field. Execution requires a local user to open an untrusted file, and successful exploitation runs code with the current process's privileges.

The record

CVE
CVE-2026-23719
Published
Feb 10, 2026
Updated
Feb 10, 2026
Vendor
Siemens
Product
Simcenter Nastran
Classifications
CWE-122, T1204.002
Attack vector
local
Privileges
unauthenticated

Timeline

How it unfolded

  1. Feb 10, 2026CVE publishedPublication date reported by the CVE source.
  2. Feb 10, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

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

  1. Affected versionversion=0 <V2512

What conditions does exploitation require?

Attack vectorlocal
Required privilegesunauthenticated

What is affected?

Siemens · Simcenter Nastranversion=0 <V2512
Siemens · Simcenter Femapversion=0 <V2512

Published CVSS scores

7.8Siemens AGCVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
7.3NIST NVDCVSS:3.1/AV:L/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:H
7.3Siemens AGCVSS:4.0/AV:L/AC:H/AT:N/PR:N/UI:P/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.

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No observations available

Sep 9, 2026Sep 15, 2026
Latest reporting daySep 15, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectorlocal
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-122Heap-based Buffer Overflow
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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