Oracle security advisory (AV26-526) – Update 1
Serial number: AV26-526 Date: May 29, 2026 Updated: June 29, 2026 On May 28, 2026, Oracle published a security advisory to address critical vulnerabilities in the following products: Oracle Communications Unified Assurance - versions 6.1.1 to 7.0.0 Oracle Database Server - versions 23.4.0 to 23.26.2 Oracle E-Business Suite - versions 12.2.3 to 12.2.15 Oracle Hospitality OPERA 5 Property Services - versions 5.6.19.24, 5.6.22, 5.6.25.19, 5.6.27.6 and 5.6.28 Oracle REST Data Services - versions 24.2.0 to 26.1.0 Update 1 Open-source reporting indicates that CVE-2026-46817 is being exploited. The Cyber Centre encourages users and administrators to review the provided web links and perform the suggested mitigations. Oracle Critical Security Patch Update Advisory - May 2026 Oracle Critical Patch Updates, Security Alerts and Bulletins
CSIRTS triage
- What
- Critical vulnerabilities have been identified in multiple Oracle products.
- Who is affected
- Users of the specified Oracle products and versions are affected.
- Urgency
- Remediation is critical due to the exploitation of CVE-2026-46817.
- Action
- Users should apply the necessary updates immediately.
AI-assisted analysis generated from the source advisory — verify against the original.
⚡ Watch Oracle Communications Unified Assurance, Oracle Database Server, Oracle E-Business Suite, Oracle Hospitality OPERA, Orac
Get an email when a new Oracle Communications Unified Assurance, Oracle Database Server, Oracle E-Business Suite, Oracle Hospitality OPERA, Orac advisory drops — max one per day, one-click unsubscribe.
Details
Original advisory: https://cyber.gc.ca/en/alerts-advisories/oracle-security-advisory-av26-526
Exploitation outlook
EPSS (FIRST.org) estimates each CVE’s probability of exploitation in the next 30 days — here is the CSIRTS.com read on those numbers.
- Low exploitation riskCVE-2026-468170.68% 30-day exploitation probability — currently an unlikely target, but scores change as exploit code circulates. Riskier than 48% of all scored CVEs.
Referenced CVEs
| CVE | CSIRTS overview | External |
|---|---|---|
| CVE-2026-46817 | coverage & exploitation status | NVD · CVE.org |
More from Canadian Centre for Cyber Security
- unknownBitWarden security advisory (AV26-683)2026-07-10
- criticalAL25-007 - Vulnerability impacting Roundcube Webmail – CVE-2025-49113 – Update 12026-07-10
- unknownMicrosoft Edge security advisory (AV26-682)2026-07-10
- criticalBroadcom VMware security advisory (AV26-681)2026-07-10
- unknownDjango security advisory (AV26-084) – Update 12026-07-09