Retrospective for 2026-08-28, 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-1089, published on 2026-08-28. Its scope includes Enclave Security. Reported consequences are impact requiring vendor clarification. These statements apply to the advisory’s scope; they do not assign every consequence to every product or CVE.
This case focuses on Enclave Security. Locate that edition in live installations, deployment images and actual dependencies, rather than treating every product from Tenable as equivalent.
Products and versions to examine
- Reference
- CERTFR-2026-AVI-1089
- Source first published
- 2026-08-28
- Latest source revision available for this day
- 2026-08-28
- Named components
- Enclave Security
- CVE identifiers
- CVE-2024-36138, CVE-2026-21637, CVE-2024-21896, CVE-2026-39822, CVE-2026-27143, CVE-2025-55130, CVE-2025-55131, CVE-2025-27210, CVE-2025-59465, CVE-2025-23167, CVE-2024-22019, CVE-2024-27983, CVE-2025-55132, CVE-2024-21892, CVE-2025-23166, CVE-2025-59466, CVE-2026-27140, CVE-2024-22017, CVE-2023-39331, CVE-2023-39332, CVE-2024-27980
| Component | Published condition |
|---|---|
| Enclave Security | < 1.9.0 |
For Enclave Security, the published condition is “< 1.9.0”. Compare the version actually loaded with that condition within its own release branch. A fix installed on another edition of Enclave Security does not close this case.
Mechanism and prerequisites
Missing public detail does not establish an absence of risk. Use releases and configurations explicitly identified by the vendor, retain uncertainties in the ticket and do not invent an exploitation scenario.
The primary record CVE-2026-21637, published by hackerone, covers node. The retained revision is dated 2026-01-21. Its scope is presented separately from the integrations and product groupings in CERTFR-2026-AVI-1089.
The published metric for CVE-2026-21637 is CVSS 3.0, 5.9/10. The vector below describes technical prerequisites; it does not measure attack frequency or the likelihood that your deployment is compromised.
CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H
- Attack vector
- Not specified in the retained source
- Prior privileges
- Not specified in the retained source
- User interaction
- Not specified in the retained source
- Complexity
- Not specified in the retained source
Choose the appropriate intervention
- Locate Enclave Security instances, running releases and service owners. Record condition < 1.9.0 in the ticket alongside reference CERTFR-2026-AVI-1089.
- Compare the installed branch with the vendor’s Enclave Security release notes. Prepare the package for that branch and a dependent-service test, retaining the pre-change state.
- After changing Enclave Security, 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 Enclave Security: In a test instance of Enclave Security, submit a known synthetic event through the normal collection channel. Confirm receipt, timestamp and processing; check that updating the collector has not left another vulnerable agent or module installed. This is a proposed defensive check, not a claim that testing was performed against third-party systems.
Limit of case CERTFR-2026-AVI-1089: 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 Enclave Security?
Advisory CERTFR-2026-AVI-1089 states: Enclave Security — < 1.9.0. Check the edition and running release; do not extend the published boundary to branches absent from the advisory.
Which prerequisites does record CVE-2026-21637 specify?
For CVE-2026-21637, the published vector is CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H. Verify those conditions on node before applying them to an integration named in CERTFR-2026-AVI-1089.
Sources and related reading
Practical guide : Make security event logs ready for detection
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-1089
Advisory revision : · Checked on :
Affected systems · 1
Original French wording is retained to avoid ambiguous translations of version conditions.
- Enclave Security versions antérieures à 1.9.0