CVE-2025-41346Network attack vector

Unauthenticated account impersonation via numerical user ID

Published Nov 18, 2025 · Updated Feb 18, 2026

Incorrect authorization in Informática del Este WinPlus 24.11.27 allows remote attackers to impersonate users via a numerical ID. WinPlus's account-selection authorization path accepts a supplied numerical user ID without verifying that the requester is entitled to act as that user. No authentication or user interaction is required; exploitation grants the selected account's access and permits data exposure, modification, or service interruption within that account's reach.

CVSS severity9.3
Critical
EPSS probability0.32%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Incorrect authorization in Informática del Este WinPlus 24.11.27 allows remote attackers to impersonate users via a numerical ID. WinPlus's account-selection authorization path accepts a supplied numerical user ID without verifying that the requester is entitled to act as that user. No authentication or user interaction is required; exploitation grants the selected account's access and permits data exposure, modification, or service interruption within that account's reach.

The record

CVE
CVE-2025-41346
Published
Nov 18, 2025
Updated
Feb 18, 2026
Vendor
Informática del Este
Product
WinPlus
Classifications
CWE-863, T1190
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Nov 18, 2025CVE publishedPublication date reported by the CVE source.
  2. Feb 18, 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=24.11.27

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Informática del Este · WinPlusversion=24.11.27

Published CVSS scores

9.3Spanish National Cybersecurity Institute, S.A. (INCIBE)CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N
9.8National Vulnerability DatabaseCVSS:3.1/AV:N/AC:L/PR:N/UI:N/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)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-863Incorrect Authorization
T1190Exploit Public-Facing Application

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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