CVE-2025-30421

Code execution via Symbol Editor stack overflow

Published May 15, 2025 · Updated May 15, 2025

Stack-based buffer overflow in NI Circuit Design Suite 14.3.0 and earlier allows attackers to execute code via a crafted .sym file. The Symbol Editor's DrObjectStorage::XML_Serialize() routine performs improper bounds checking while serializing attacker-controlled symbol data into a stack buffer. An attacker must persuade a user to open the file; resulting memory corruption can disclose process data or execute code in the user's context.

CVSS severity8.5
High
EPSS probability0.20%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Stack-based buffer overflow in NI Circuit Design Suite 14.3.0 and earlier allows attackers to execute code via a crafted .sym file. The Symbol Editor's DrObjectStorage::XML_Serialize() routine performs improper bounds checking while serializing attacker-controlled symbol data into a stack buffer. An attacker must persuade a user to open the file; resulting memory corruption can disclose process data or execute code in the user's context.

The record

CVE
CVE-2025-30421
Published
May 15, 2025
Updated
May 15, 2025
Vendor
National Instruments
Product
Circuit Design Suite
Classifications
CWE-787, CWE-121, T1203, T1204.002
Attack vector
local
Privileges
unauthenticated

Timeline

How it unfolded

  1. May 15, 2025CVE publishedPublication date reported by the CVE source.
  2. May 15, 2025Record 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 <=14.3.0

What conditions does exploitation require?

Attack vectorlocal
Required privilegesunauthenticated

What is affected?

National Instruments · Circuit Design Suiteversion=0 <=14.3.0

Published CVSS scores

8.5National InstrumentsCVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:P/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N
7.8National InstrumentsCVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

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-787Out-of-bounds Write
CWE-121Stack-based Buffer Overflow
T1203Exploitation for Client Execution
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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