CVE-2025-48020

Process termination via crafted-message assertion

Published Feb 13, 2026 · Updated Feb 13, 2026

Reachable assertion in Yokogawa Vnet/IP Interface Package R1.07.00 and earlier allows remote attackers to terminate the software stack process. The ywnvpcore process accepts a crafted Vnet/IP message that reaches an assertion and exits instead of rejecting the malformed input. Exploitation requires unauthenticated access from an adjacent Vnet/IP network and interrupts communication without reported data disclosure or modification.

CVSS severity6.0
Medium
EPSS probability0.24%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Reachable assertion in Yokogawa Vnet/IP Interface Package R1.07.00 and earlier allows remote attackers to terminate the software stack process. The ywnvpcore process accepts a crafted Vnet/IP message that reaches an assertion and exits instead of rejecting the malformed input. Exploitation requires unauthenticated access from an adjacent Vnet/IP network and interrupts communication without reported data disclosure or modification.

The record

CVE
CVE-2025-48020
Published
Feb 13, 2026
Updated
Feb 13, 2026
Vendor
Yokogawa Electric Corporation
Product
Vnet/IP Interface Package
Classifications
CWE-617, T1499.004
Attack vector
adjacent
Privileges
unauthenticated

Timeline

How it unfolded

  1. Feb 13, 2026CVE publishedPublication date reported by the CVE source.
  2. Feb 13, 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=R1.07.00 or earlier

What conditions does exploitation require?

Attack vectoradjacent
Required privilegesunauthenticated

What is affected?

Yokogawa Electric Corporation · Vnet/IP Interface Packageversion=R1.07.00 or earlier

Published CVSS scores

6.0Yokogawa Electric CorporationCVSS:4.0/AV:A/AC:H/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N
6.5NIST NVDCVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
5.3Yokogawa Electric CorporationCVSS:3.0/AV:A/AC:H/PR:N/UI:N/S:U/C:N/I:N/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.

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No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectoradjacent
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-617Reachable Assertion
T1499.004Endpoint Denial of Service: Application or System Exploitation

Public exploit references

No public exploit references are available in this record.

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Technologies

Your stack

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Your stack

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