How severe is CVE-2025-30421?

CVE-2025-30421 has a CVSS 3.x base score of 7.8, rated high severity. It is exploitable over local access with low attack complexity, requires no privileges and user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2025-30421 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (7th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2025-30421?

CVE-2025-30421 affects Ni Circuit Design Suite. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2025-30421?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.

Does CVE-2025-30421 have an EU (EUVD) identifier?

Yes. CVE-2025-30421 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2025-15181.

When was CVE-2025-30421 published?

CVE-2025-30421 was published on 2025-05-15 and last updated on 2026-06-17.

CVE-2025-30421

CVE-2025-30421 is a high-severity vulnerability in Ni Circuit Design Suite with a CVSS 3.x base score of 7.8. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-787.

Key facts

Severity: High (CVSS 3.x base score 7.8)
CVSS v4: 8.5
EPSS exploit prediction: 0% (7th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2025-15181
Weakness: CWE-787
Affected product: Ni Circuit Design Suite
Published: 2025-05-15
Last modified: 2026-06-17

Description

There is a memory corruption vulnerability due to a stack-based buffer overflow in DrObjectStorage::XML_Serialize() when using the SymbolEditor in NI Circuit Design Suite. This vulnerability may result in information disclosure or arbitrary code execution. Successful exploitation requires an attacker to get a user to open a specially crafted .sym file. This vulnerability affects NI Circuit Design Suite 14.3.0 and prior versions.

Frequently asked questions

What is CVE-2025-30421?: There is a memory corruption vulnerability due to a stack-based buffer overflow in DrObjectStorage::XML_Serialize() when using the SymbolEditor in NI Circuit Design Suite. This vulnerability may result in information disclosure or arbitrary code execution. Successful exploitation requires an attacker to get a user to open a specially crafted .sym file. This vulnerability affects NI Circuit Design Suite 14.3.0 and prior versions.
How severe is CVE-2025-30421?: CVE-2025-30421 has a CVSS 3.x base score of 7.8, rated high severity. It is exploitable over local access with low attack complexity, requires no privileges and user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2025-30421 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (7th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2025-30421?: CVE-2025-30421 affects Ni Circuit Design Suite. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2025-30421?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
Does CVE-2025-30421 have an EU (EUVD) identifier?: Yes. CVE-2025-30421 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2025-15181.
When was CVE-2025-30421 published?: CVE-2025-30421 was published on 2025-05-15 and last updated on 2026-06-17.

References

https://www.ni.com/en/support/security/available-critical-and-security-updates-for-ni-software/memory-corruption-vulnerabilities-in-ni-circuit-design-suite.html

Affected products (1)

cpe:2.3:a:ni:circuit_design_suite:*:*:*:*:*:*:*:*

More vulnerabilities in Ni Circuit Design Suite

CVE-2025-6034 — High (CVSS 7.8): There is a memory corruption vulnerability due to an out of bounds read in DefaultFontOptions() when using SymbolEditor…
CVE-2025-6033 — High (CVSS 7.8): There is a memory corruption vulnerability due to an out of bounds write in XML_Serialize() when using SymbolEditor in…
CVE-2025-30420 — High (CVSS 7.8): There is a memory corruption vulnerability due to an out of bounds read in Bitmap::InternalDraw() when using the…
CVE-2025-30419 — High (CVSS 7.8): There is a memory corruption vulnerability due to an out of bounds read in GetSymbolBorderRectSize() when using the…
CVE-2025-30418 — High (CVSS 7.8): There is a memory corruption vulnerability due to an out of bounds write in CheckPins() when using the SymbolEditor in…
CVE-2025-30417 — High (CVSS 7.8): There is a memory corruption vulnerability due to an out of bounds write in Library!DecodeBase64() when using the…

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