CVE-2025-12414Network attack vector

Account takeover via OIDC email normalization

Published Nov 20, 2025 · Updated Nov 20, 2025

Authentication bypass in Google Cloud Looker allows remote attackers to take over accounts through OIDC login flows. The OIDC account-matching path normalizes email-address strings before associating an asserted identity with an existing account, allowing a colliding address to select another user's account. The flaw is reachable only when OIDC authentication is configured, and successful exploitation grants the victim account's access.

CVSS severityUnavailable
Unscored
EPSS probability0.46%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Authentication bypass in Google Cloud Looker allows remote attackers to take over accounts through OIDC login flows. The OIDC account-matching path normalizes email-address strings before associating an asserted identity with an existing account, allowing a colliding address to select another user's account. The flaw is reachable only when OIDC authentication is configured, and successful exploitation grants the victim account's access.

The record

CVE
CVE-2025-12414
Published
Nov 20, 2025
Updated
Nov 20, 2025
Vendor
Google Cloud
Product
Looker
Classifications
CWE-290, T1078
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Nov 20, 2025CVE publishedPublication date reported by the CVE source.
  2. Nov 20, 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 <24.12.100
  2. Affected versionversion=0 <24.18.193
  3. Affected versionversion=0 <25.0.69
  4. Affected versionversion=0 <25.10.22
  5. Affected versionversion=0 <25.12.0
  6. Affected versionversion=0 <25.6.57
  7. Affected versionversion=0 <25.8.39

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Google Cloud · Lookerversion=0 <24.12.100; version=0 <24.18.193; version=0 <25.0.69; version=0 <25.10.22; version=0 <25.12.0; version=0 <25.6.57; version=0 <25.8.39

Published CVSS scores

No CVSS assessment is available in this record.

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 9, 2026Sep 15, 2026
Latest reporting daySep 15, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-290Authentication Bypass by Spoofing
T1078Valid Accounts

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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