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CVE-2025-12414— Looker account compromise via punycode homograph attack

Quick assessment

Affected
Google Cloud Looker
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

Google Looker是美国谷歌（Google）公司的一个智能商业平台。 Google Looker存在安全漏洞，该漏洞源于电子邮件地址字符串规范化不当，可能导致账户接管。

AI Predicted 9.1 Difficulty: Easy EPSS 0.46% · P37
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I. Basic Information for CVE-2025-12414

Vulnerability Information
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Vulnerability Title
Looker account compromise via punycode homograph attack
Source: CVE Program / CVE List V5
Vulnerability Description
An attacker could take over a Looker account in a Looker instance configured with OIDC authentication, due to email address string normalization.Looker-hosted and Self-hosted were found to be vulnerable. This issue has already been mitigated for Looker-hosted. Self-hosted instances must be upgraded as soon as possible. This vulnerability has been patched in all supported versions of Self-hosted. The versions below have all been updated to protect from this vulnerability. You can download these versions at the Looker download page https://download.looker.com/ : * 24.12.100+ * 24.18.193+ * 25.0.69+ * 25.6.57+ * 25.8.39+ * 25.10.22+ * 25.12.0+
Source: CVE Program / CVE List V5
CVSS Information
CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/U:Amber
Source: CVE Program / CVE List V5
Vulnerability Type
使用欺骗进行的认证绕过
Source: CVE Program / CVE List V5
Vulnerability Title
Google Looker 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Google Looker是美国谷歌（Google）公司的一个智能商业平台。 Google Looker存在安全漏洞，该漏洞源于电子邮件地址字符串规范化不当，可能导致账户接管。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
Google Cloud Looker 0 ~ 24.12.100 -
Google Cloud Looker 0 ~ 24.12.100 -

II. Public POCs for CVE-2025-12414

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III. Intelligence Information for CVE-2025-12414

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Other References for CVE-2025-12414 (1)

IV. Related Vulnerabilities

Same product: Looker
Same vendor: Google Cloud
Same weakness: CWE-290

V. Comments for CVE-2025-12414

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