Retrospective for 2026-05-30, compiled on 27 October 2026. The date identifies the day being analysed; source publication and revision dates are recorded below.
What this advisory changes in your environment
The starting point is CERTFR-2026-AVI-0662, published on 2026-05-29. Its scope includes Oracle Database Server (Net Service). Reported consequences are denial of service, remote code execution. These statements apply to the advisory’s scope; they do not assign every consequence to every product or CVE.
This case focuses on Oracle Database Server (Net Service). Locate that edition in live installations, deployment images and actual dependencies, rather than treating every product from Oracle as equivalent.
Products and versions to examine
- Reference
- CERTFR-2026-AVI-0662
- Source first published
- 2026-05-29
- Latest source revision available for this day
- 2026-05-29
- Named components
- Oracle Database Server (Net Service)
- CVE identifiers
- CVE-2026-46834, CVE-2026-46835, CVE-2026-46833
Mechanism and prerequisites
Code execution can give an attacker the permissions of the affected process. Check the service account and reachable network destinations. Component isolation can reduce lateral movement opportunities, but does not replace the fix.
The primary record CVE-2026-46833, published by oracle, covers Oracle Database Server. The retained revision is dated 2026-05-29. Its scope is presented separately from the integrations and product groupings in CERTFR-2026-AVI-0662.
The published metric for CVE-2026-46833 is CVSS 3.1, 9/10. The vector below describes technical prerequisites; it does not measure attack frequency or the likelihood that your deployment is compromised.
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:H/I:H/A:H
- Attack vector
- network
- Prior privileges
- none
- User interaction
- none
- Complexity
- high
Choose the appropriate intervention
- Locate Oracle Database Server (Net Service) instances, running releases and service owners. Record condition Not specified in the retained source in the ticket alongside reference CERTFR-2026-AVI-0662.
- Compare the installed branch with the vendor’s Oracle Database Server (Net Service) release notes. Prepare the package for that branch and a dependent-service test, retaining the pre-change state.
- After changing Oracle Database Server (Net Service), capture the loaded version again and verify the workflow below. Any exception needs an owner, an exposure-reduction measure and an expiry date.
Verify the fix in a real workflow
Validation scenario to adapt for Oracle Database Server (Net Service): With Oracle Database Server (Net Service), run a reference read and transaction in a test database through the application’s actual client. Check account permissions, errors and any replication; distinguish the server release from the driver release. This is a proposed defensive check, not a claim that testing was performed against third-party systems.
Limit of case CERTFR-2026-AVI-0662: this analysis replaces neither vendor prerequisites nor investigation of your logs. Only documented versions are reproduced; no attack date or victim is invented.
Questions specific to this case
Which condition should be checked for Oracle Database Server (Net Service)?
Advisory CERTFR-2026-AVI-0662 states: Oracle Database Server (Net Service) — Not specified in the retained source. Check the edition and running release; do not extend the published boundary to branches absent from the advisory.
Which prerequisites does record CVE-2026-46833 specify?
For CVE-2026-46833, the published vector is CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:H/I:H/A:H. Verify those conditions on Oracle Database Server before applying them to an integration named in CERTFR-2026-AVI-0662.
Sources and related reading
Practical guide : Data reliability: diagnose a dashboard before making a decision
Explore the decision addressed in this case
Complete source advisory inventory
The article table may be an extract. These lists contain every affected-system entry and CVE in the specified advisory revision. They are not an inventory of your assets and do not map every CVE to every product.
Official source · CERTFR-2026-AVI-0662
Advisory revision : · Checked on :
Affected systems · 1
Original French wording is retained to avoid ambiguous translations of version conditions.
- Oracle Database Server (Net Service) versions 23.4.0 à 23.26.2