High Memory corruption

CVE-2026-18445 — Integer Overflow Vulnerability Resulting in an Out of Bounds Write in NI LabVIEW

There is an integer overflow vulnerability resulting in an out-of-bounds write recently discovered in NI LabVIEW. This may result in information disclosure or arbitrary code execution.  Successful exploitation requires an attacker to get a user to open a specially crafted VI file.  This vulnerability affects NI LabVIEW 2026 Q3 and prior versions.

Published Aug 25, 2026 · Updated Oct 15, 2026 · Sources: NIST National Vulnerability Database, CVE Program (cve.org) e CISA ADP · CNA: NI

Low

Who exploits it and how urgent it is

A 0–100 score combining confirmed exploitation, ransomware and APT use, public exploits, EPSS and severity.

No exploitation signal in the sources consulted so far.

How the score was calculated

Technical severity (high)+6

The score orders the patch queue; it does not replace your asset context (internet exposure, criticality, compensating controls).

Triage

Is it exploited, how likely is exploitation, what does it touch, and how severe do the sources call it.

Exploitation

Not confirmed

Not in CISA KEV — an absence of record, not proof it is unexploited.

EPSS FIRST

—

No EPSS score.

Affects

Labview

CVSS base

7.8

High · 3 source(s)

CISA SSVC assessment CISA

Three decision points CISA publishes for the CVEs it assesses (SSVC 2.0.3). A stakeholder decision, not a severity score.

Exploitation

None

none · proof-of-concept · active

Automatable

can an attacker script the kill-chain steps

Technical impact

Total

partial · total control of the vulnerable component

Remediation

Fixes and mitigations documented by the sources — linked to the original advisory.

Documented patch — www.ni.com (NIST National Vulnerability Database)

First 24 hours

Ordered from the record’s own fields — exposure first, because you cannot patch what you have not found. A rule-generated starting point.

Identify exposed assets running the affected vendor/product/version combinations (Ni Labview).
Apply the fixed version or the patch documented under Remediation.
Exploitation requires user interaction: tighten email/web filtering and warn affected users.
Search available logs for exploit probes matching the vulnerability class (memory corruption), errors and authentication anomalies.

Affected scope

Vendor, product and versions as the sources word them.

Vendor	Product	Versions	Status	Source
Ni	Labview	version 2025-q3_patch4version 2024-q3_patch6version 2025-q1version 2025-q1_patch1version 2025-q1_patch2version 2025-q1_patch3version 2025-q3version 2025-q3_patch1 and 27 more version 2025-q3_patch2version 2025-q3_patch3version 2024-q3_patch5version 2026-q1version 2026-q1_patch1version 2026-q1_patch2version 2026-q3version 2023-q3_patch8version 2023-q1version 2023-q3version 2023-q3_patch1version 2023-q3_patch2version 2023-q3_patch3version 2023-q3_patch4version 2023-q3_patch5version 2023-q3_patch6version 2023-q3_patch7≤ 2022version 2023-q3_patch9version 2024version 2024-q1version 2024-q1_patch1version 2024-q3version 2024-q3_patch1version 2024-q3_patch2version 2024-q3_patch3version 2024-q3_patch4	Vulnerable	NIST National Vulnerability Database
Ni	Labview	< 23.0.0≥ 23.1.0 and < 23.3.10≥ 24.1.0 and < 24.3.7≥ 25.1.0 and < 25.3.5≥ 26.1.0 and < 26.3.1	Vulnerable	CVE Program (cve.org) e CISA ADP

Attack characteristics

The CVSS vector, decoded. It describes the attack, not your exposure to it.

Attack vector

Local

Attack complexity

Low

Privileges required

None

User interaction

Required

Scope

Unchanged

Confidentiality

High

Integrity

High

Availability

High

Every base score collected

Sources score independently and may disagree; each row says who scored it and under which version.

Score	Version	Severity	Expl.	Impact	Scored by
6.9	CVSS 4.0	Medium	—	—	security@ni.com via NIST National Vulnerability Database
6.9	CVSS 4.0	Medium	—	—	NI via CVE Program (cve.org) e CISA ADP
7.8	CVSS 3.1	High	1.8	5.9	nvd@nist.gov via NIST National Vulnerability Database
6.6	CVSS 3.1	Medium	1.8	4.7	security@ni.com via NIST National Vulnerability Database
6.6	CVSS 3.1	Medium	—	—	NI via CVE Program (cve.org) e CISA ADP

CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H (score shown at the top: nvd@nist.gov)

Scoring entities (NIST, CNA, ADP) score independently; each score is shown with its origin. For prioritization we use 7.8 (NVD (NIST)) as a conservative provisional reference — not a definitive official score.

Weakness MITRE

Weakness class according to MITRE’s CWE catalog.

CWE-190 · Integer Overflow or Wraparound

Other CVEs with this weakness →

Detection

Read off the CVSS vector and the weakness class. Starting points, not tested rules.

Local/physical vector: focus on endpoint telemetry (EDR) from affected hosts.
Correlate service crashes/restarts with inbound traffic; repeated crashes may indicate attempts.

endpoint telemetry (EDR)crash dumps

Timeline

What happened to this CVE, newest first.

2026
Affected products added · ni/labview
Oct 15, 2026 · CVE Program (cve.org) e CISA ADP
SSVC assessment updated
Oct 15, 2026 · CVE Program (cve.org) e CISA ADP
Record published
Oct 15, 2026
Fix documented
Oct 15, 2026 · NIST National Vulnerability Database
CVSS changed · 7.8
Oct 15, 2026 · NIST National Vulnerability Database
Source status changed · → Analyzed
Oct 15, 2026 · NIST National Vulnerability Database
Record created in this database
Oct 15, 2026 · NIST National Vulnerability Database
CVE published
Aug 25, 2026 · NI

Source activity

Repeated readings are counted rather than listed.

1× Official description updated · Oct 15, 2026 – Oct 15, 2026

References

1 on the record

www.ni.com/en/support/security/available-critical-and-security-updates-for-ni-so
Patch, Vendor Advisory, NIST National Vulnerability Database

Elsewhere on this site

Ni
every CVE for this vendor

Memory corruption
same class

CWE-190
other pages naming this weakness

Related CVEs (same products)

High CVE-2026-64204 Out-of-Bounds Write Vulnerability in NI LabVIEW when loading VI Aug 25, 2026
High CVE-2026-64201 Out-of-Bounds Read Vulnerability in NI LabVIEW when loading VI Aug 25, 2026
High CVE-2026-64202 Out-of-Bounds Read Vulnerability in NI LabVIEW when loading VI Aug 25, 2026
High CVE-2026-64203 Out-of-Bounds Read Vulnerability in NI LabVIEW when loading VI Aug 25, 2026
High CVE-2026-18444 Integer Conversion Vulnerability Resulting in an Out of Bounds Read in NI LabVIEW Aug 25, 2026
High CVE-2026-16234 Out-of-Bounds Read Vulnerability in NI LabVIEW when loading VI Aug 25, 2026

Not in any source we poll

Listed rather than left blank: an empty field and an unmeasured one look identical on screen, and only one is a reason to look elsewhere.

No FIRST EPSS score.
No confirmed IOCs, IP addresses, domains, file hashes, or malware artifacts supplied.
No organization-specific asset inventory, compensating-control status, or patch deployment evidence supplied.
No exploit packet captures, log samples, or incident case IDs supplied.

Answered from this record

Text assembled only from the fields above — no additional claims.

What should defenders know first?

CVE-2026-18445 is "Integer Overflow Vulnerability Resulting in an Out of Bounds Write in NI LabVIEW", rated High. It affects Labview (Ni); versions are in the scope table. It is not in CISA KEV, which does not rule out exploitation. CVSS 7.8 describes technical severity. First verify whether exposed or business-critical assets run the affected versions, apply vendor fixes or mitigations, and preserve logs for review.

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