CVE-2025-26499

Session impersonation via token-refresh race

Published Sep 11, 2025 · Updated Sep 11, 2025

Authentication race in Wind River Studio Developer 24.11 allows local users to receive another user's active session token. Under extreme load, concurrent authentication or token-refresh operations can associate a newly issued token with the wrong logged-in user. The event is random and requires coincident activity by two users; the unintended session grants the other user's rights and data access until it ends.

CVSS severity5.8
Medium
EPSS probability0.14%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Authentication race in Wind River Studio Developer 24.11 allows local users to receive another user's active session token. Under extreme load, concurrent authentication or token-refresh operations can associate a newly issued token with the wrong logged-in user. The event is random and requires coincident activity by two users; the unintended session grants the other user's rights and data access until it ends.

The record

CVE
CVE-2025-26499
Published
Sep 11, 2025
Updated
Sep 11, 2025
Vendor
Wind River
Product
Wind River Studio Developer
Classifications
CWE-270, T1078.004
Attack vector
local
Privileges
authenticated

Timeline

How it unfolded

  1. Sep 11, 2025CVE publishedPublication date reported by the CVE source.
  2. Sep 11, 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=24.11 <24.11>=

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

Wind River · Wind River Studio Developerversion=24.11 <24.11>=

Published CVSS scores

5.8WindRiverCVSS:3.1/AV:L/AC:H/PR:L/UI:R/S:U/C:H/I:H/A: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.

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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)
Vectorlocal
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-270Privilege Context Switching Error
T1078.004Valid Accounts: Cloud Accounts

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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