France
FRA
Eurofiber France breach exposes data of thousands of client organizations
Eurofiber France detected on 13 November 2025 that a vulnerability in its ticketing platform and ATE customer portal (Eurofiber Cloud Infra France) was exploited, resulting in data exfiltration. The company says services remained online, the flaw was patched, authorities (CNIL, ANSSI) notified, and an extortion complaint filed. Media and researchers reported the breach could affect around 3,600 French organizations, including SNCF, Orange, SFR, Auchan, and Airbus.
70
Estimated severity
70 / 100
86
Source reliability
86 / 100
Approximate Date
13/11/2025
Targeted Company
EUROFIBER FRANCE
Targeted Company Supply Chain Impact
Distribution & Fulfillment
Procurement & Sourcing
Production & Manufacturing
Sales (Retail & Ecommerce)
Warehousing
Service Delivery
Unrecognized Impact
Supply Chain Relations
SNCF (Downstream customer)ORANGE (Downstream customer)SFR (Downstream customer)AUCHAN (Downstream customer)AIRBUS (Downstream customer)
Geographic Impact
Country Targeted Company
Other Affected Countries
No other affected countries reported
Target country
France
Affected countries
France
Impacted regions
France · France
Operational Impact
Duration
No information
Financial impact (USD M)
No information
Impact types
No information
Affected sectors
Telecommunications
Affected departments
No information
Attack Profile
Attack types
Exploitation of vulnerabilityData breachData exfiltrationUnauthorized accessExtortion
Attributed threat actors
No information
Sources
Incident Sources
eurofiber.comhttps://www.eurofiber.com/fr-fr/actualites/incident-de-cybersecurite-chez-eurofiber-francesecurityaffairs.comhttps://securityaffairs.com/184822/data-breach/eurofiber-confirms-november-13-hack-data-theft-and-extortion-attempt.htmlcybernews.comhttps://cybernews.com/security/eurofiber-france-discloses-data-breachtechzine.euhttps://www.techzine.eu/news/security/136373/eurofiber-reports-data-breach-in-france-major-customers-affecteduniversfreebox.comhttps://www.universfreebox.com/article/588525/une-nouvelle-fuite-de-donnees-importante-revelee-plus-de-3600-acteurs-touches-dont-orange-et-sfrsocradar.iohttps://socradar.io/blog/eurofiber-breach-critical-infrastructure-data-europe