HackingProfessional ServicesHealthcareProfessional ServicesVulnerability ExploitZero-DaySupply Chain (3P Vendor)Employee Data InvolvedIdentity (basic)Government IDFinancial accountMediumContained

PAREXEL INTERNATIONAL, INC.

bd_7678d521c76b2a6b · schema v1 · pii pii-v1

Severity

Medium

Discovered

Oct 4, 2025

Filed

Dec 17, 2025

To disclose

11 weeks

Affected

Not disclosed

Linked

10 filings

Confidence

64%

Full breach record for PAREXEL INTERNATIONAL, INC. →

Parexel International disclosed a security incident involving a third-party vendor, Oracle. On October 4, 2025, Parexel detected suspicious activity in its Oracle OCI E-Business Suite environment. The incident stemmed from a zero-day exploit in Oracle's cloud infrastructure, announced by Oracle on October 5, 2025. The breach window is cited as August 9, 2025, to October 5, 2025. Affected data includes names, dates of birth, financial account numbers, payment card numbers, and social security/national ID numbers of employees. Parexel disconnected the affected system, applied patches, and is offering 24 months of identity monitoring to affected individuals.

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Incident timeline

undetected · 56 days

discovery → filing · 11 weeks / 74 days

Aug 9, 2025

Begins

Oct 4, 2025

Discovered

Dec 17, 2025

Filed

vs. sector median

8 wks faster

This filing is one of 10 about the same incident.View merged incident

Part of ORACLE CORPORATION supply-chain incident (2025) — a supply-chain cascade affecting multiple organizations.View cascade →

Linked disclosures

Why this link?

Regulatory filings (9) · sorted by filing gap

Texas State AGbd_0288fc926d272d312025-12-17Candidate
Massachusetts State AGbd_56f59d1075c371fc2025-12-17Verified
New Hampshire State AGbd_5cf5bdff6a9f9cde2025-12-17Verified
Montana State AGbd_5fa13ba676bcd1232025-12-17Verified

Show 5 more filings ↓up to 16d gap

Nebraska State AGbd_7934ff5031310fd32025-12-17Verified
Vermont State AGbd_937062a523a21f332025-12-17Verified
Maine State AGbd_a687dffb1206e0f02025-12-17Verified
Indiana State AGbd_a9becd46a78217912025-12-17Verified
Illinois State AGbd_101fe08b342583c62025-12-01 · +16dVerified

Name: PAREXEL INTERNATIONAL, INC.
norm: parexel international

Name: PAREXEL INTERNATIONAL, INC.
norm: parexel international
Industry: Professional ServicesllmHealthcarellm

Discovered: Oct 4, 2025
Breach occurred: Aug 9, 2025 – Oct 5, 2025
Undetected for: 56 daysoccurrence → discovery
Materiality determined: —
Notification sent: Dec 17, 2025
Affected individuals: Not disclosed
Data types: Identity (basic)Government IDFinancial account
Data elements: Date of birth
Attack vector: Third-Party / Supply Chain
MITRE ATT&CK: T1190 Exploit Public-Facing ApplicationT1195 Supply Chain Compromise
Threat actor: External
Third party: via Oracle
Initial access: exploit_public_facing

During the incident: Detected suspicious activity impacting Oracle OCI E-Business Suite environment
Engaged third-party cybersecurity experts to investigate
Disconnected Oracle EBS from network
Applied patch addressing the zero-day vulnerability
Changes made: Offering 24 months of complimentary identity monitoring and theft resolution services
Source: Quoted from the filing itself, not independently verified.

Time to disclose: 11 weeks(74 days from discovery to filing)
Compliance flags: — (clock not assessable for this source)

Status: No extraction artifact recorded for this disclosure.

Filing propagation · 10 filings · 10 states

View merged incident ↗

Illinois State AGDec 1 · first

Texas State AG+16d

Massachusetts State AG+16d

New Hampshire State AG+16d

Montana State AG+16d

Nebraska State AG+16d

Vermont State AG+16d

Maine State AG+16d

Indiana State AG+16d

California State AG+16d · this page

Pattern: first filing Dec 1 (IL), last Dec 17 (CA) — a 16-day rolling notification. Rolling spreads often mean counsel is filing as thresholds trip per state. Why this link?

Evidence ladder

Leak-site claim

Attacker assertion only. Establishes: claim date, group, alleged victim.

Press / market report

Unlocks: incident narrative, operational impact. Still no compliance clock.

State AG / regulator filingThis record

Unlocks: discovery date, data types, affected count, compliance clock.

SEC 8-K / victim statement

Unlocks: materiality, stated response, full audit trail. Ceiling removed.

Source URL: https://oag.ca.gov/ecrime/databreach/reports/sb24-615908
DisclosureLens links to the originating regulator URL — full filing bodies are not redistributed from public surfaces (§4.5).
Filed at: Dec 17, 2025
Raw hash: 7886069dbc48f3472034c42d1bea7c0e2b861cf96d7118226effeb4f5ec677bb

Linked disclosures

Regulatory filings (9) · sorted by filing gap

Reporting entityPAREXEL INTERNATIONAL, INC.

Victim entityPAREXEL INTERNATIONAL, INC.

Incidentdiscovered Oct 4, 2025

Stated responseDetected suspicious activity impacting Oracle OCI E-Business Suite environment

Complianceclock not assessable

Extraction provenanceno artifact recorded

Source provenanceoag.ca.gov