Retrospective for 2026-10-16, 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-1327, published on 2026-10-16. Its scope includes AIG-302 Series. Reported consequences are data integrity compromise, security control bypass, loss of confidentiality. These statements apply to the advisory’s scope; they do not assign every consequence to every product or CVE.
This case focuses on AIG-302 Series. Locate that edition in live installations, deployment images and actual dependencies, rather than treating every product from Moxa as equivalent.
Products and versions to examine
- Reference
- CERTFR-2026-AVI-1327
- Source first published
- 2026-10-16
- Latest source revision available for this day
- 2026-10-16
- Named components
- AIG-302 Series
- CVE identifiers
- CVE-2026-109813, CVE-2026-109812
| Component | Published condition |
|---|---|
| AIG-302 Series | < 1.4.1 |
For AIG-302 Series, the published condition is “< 1.4.1”. Compare the version actually loaded with that condition within its own release branch. A fix installed on another edition of AIG-302 Series does not close this case.
Mechanism and prerequisites
A security bypass challenges a trust boundary. Verify server-side authorisation decisions and alternative paths; hiding an interface is not an access restriction.
The primary record CVE-2026-109813, published by Moxa, covers AIG-302 Series. The retained revision is dated 2026-10-16. Its scope is presented separately from the integrations and product groupings in CERTFR-2026-AVI-1327.
The published metric for CVE-2026-109813 is CVSS 4.0, 8.6/10. The vector below describes technical prerequisites; it does not measure attack frequency or the likelihood that your deployment is compromised.
CVSS:4.0/AV:A/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N
- Attack vector
- adjacent network
- Prior privileges
- none
- User interaction
- none
- Complexity
- low
- Additional attack requirements
- none
- Weakness
- CWE-321
Choose the appropriate intervention
- Locate AIG-302 Series instances, running releases and service owners. Record condition < 1.4.1 in the ticket alongside reference CERTFR-2026-AVI-1327.
- Compare the installed branch with the vendor’s AIG-302 Series release notes. Prepare the package for that branch and a dependent-service test, retaining the pre-change state.
- After changing AIG-302 Series, 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 AIG-302 Series: For AIG-302 Series, prepare validation with the operations owner on a test bench or representative copy. Verify process communications and maintenance access; technical ability to update does not authorise interruption of an industrial system. This is a proposed defensive check, not a claim that testing was performed against third-party systems.
Limit of case CERTFR-2026-AVI-1327: 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 AIG-302 Series?
Advisory CERTFR-2026-AVI-1327 states: AIG-302 Series — < 1.4.1. Check the edition and running release; do not extend the published boundary to branches absent from the advisory.
Which prerequisites does record CVE-2026-109813 specify?
For CVE-2026-109813, the published vector is CVSS:4.0/AV:A/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N. Verify those conditions on AIG-302 Series before applying them to an integration named in CERTFR-2026-AVI-1327.
Sources and related reading
Practical guide : Software inventory: prepare for end of support
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-1327
Advisory revision : · Checked on :
Affected systems · 1
Original French wording is retained to avoid ambiguous translations of version conditions.
- AIG-302 Series versions antérieures à 1.4.1