CVE-2025-2634

Code execution via unchecked font-map bounds

Published Jul 23, 2025 · Updated Jul 23, 2025

Out-of-bounds read in National Instruments LabVIEW 2025 Q1 and earlier allows attackers to disclose data or execute code via a crafted VI. The fontmgr component fails to validate an index, position, or offset while building a font map, causing a read beyond the intended buffer. The required user action gates exposure of process memory or code execution in the LabVIEW process.

CVSS severity7.1
High
EPSS probability0.16%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Out-of-bounds read in National Instruments LabVIEW 2025 Q1 and earlier allows attackers to disclose data or execute code via a crafted VI. The fontmgr component fails to validate an index, position, or offset while building a font map, causing a read beyond the intended buffer. The required user action gates exposure of process memory or code execution in the LabVIEW process.

The record

CVE
CVE-2025-2634
Published
Jul 23, 2025
Updated
Jul 23, 2025
Vendor
National Instruments
Product
LabVIEW
Classifications
CWE-1285, CAPEC-100, T1204.002
Attack vector
local
Privileges
unauthenticated

Timeline

How it unfolded

  1. Jul 23, 2025CVE publishedPublication date reported by the CVE source.
  2. Jul 23, 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 <=22.3.5
  2. Affected versionversion=23.0.0 <=23.3.6
  3. Affected versionversion=24.0.0 <=24.3.3
  4. Affected versionversion=25.0.0 <25.3.0

What conditions does exploitation require?

Attack vectorlocal
Required privilegesunauthenticated

What is affected?

National Instruments · LabVIEWversion=0 <=22.3.5; version=23.0.0 <=23.3.6; version=24.0.0 <=24.3.3; version=25.0.0 <25.3.0

Published CVSS scores

7.3NI CNA recordCVSS:4.0/AV:L/AC:L/AT:P/PR:N/UI:P/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N
7.8NICVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
7.1NI advisoryCVSS:4.0/AV:L/AC:L/AT:P/PR:N/UI:A/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.

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-1285Improper Validation of Specified Index, Position, or Offset in Input
CAPEC-100Overflow Buffers
T1204.002User Execution Malicious 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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