Retrospective for 2026-09-10, 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-1159, published on 2026-09-10. Its scope includes Microsoft Edge. Reported consequences are 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 Microsoft Edge. Locate that edition in live installations, deployment images and actual dependencies, rather than treating every product from Microsoft as equivalent.
Products and versions to examine
- Reference
- CERTFR-2026-AVI-1159
- Source first published
- 2026-09-10
- Latest source revision available for this day
- 2026-09-10
- Named components
- Microsoft Edge
- CVE identifiers
- CVE-2026-85046
| Component | Published condition |
|---|---|
| Microsoft Edge | < 152.0.4191.62 |
For Microsoft Edge, the published condition is “< 152.0.4191.62”. Compare the version actually loaded with that condition within its own release branch. A fix installed on another edition of Microsoft Edge does not close this case.
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.
For CERTFR-2026-AVI-1159, the retained documents do not provide a suitably dated primary CVE record to establish this case’s prerequisites. Required authentication, user interaction and active exploitation therefore remain unestablished here; they are not inferred from Microsoft Edge or the risk category alone.
Choose the appropriate intervention
- Locate Microsoft Edge instances, running releases and service owners. Record condition < 152.0.4191.62 in the ticket alongside reference CERTFR-2026-AVI-1159.
- Compare the installed branch with the vendor’s Microsoft Edge release notes. Prepare the package for that branch and a dependent-service test, retaining the pre-change state.
- After changing Microsoft Edge, 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 Microsoft Edge: Close every Microsoft Edge process, restart the browser and capture its actual version. With a test profile, exercise an internal application and check approved extensions; verify any long-term maintenance branches separately. This is a proposed defensive check, not a claim that testing was performed against third-party systems.
Limit of case CERTFR-2026-AVI-1159: 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 Microsoft Edge?
Advisory CERTFR-2026-AVI-1159 states: Microsoft Edge — < 152.0.4191.62. Check the edition and running release; do not extend the published boundary to branches absent from the advisory.
What is still needed to assess Microsoft Edge exposure?
For Microsoft Edge, establish the running version, the path to the component and process permissions. The sources retained for CERTFR-2026-AVI-1159 do not establish every prerequisite or active exploitation.
Sources and related reading
Practical guide : Review browser extensions before enterprise deployment
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-1159
Advisory revision : · Checked on :
Affected systems · 1
Original French wording is retained to avoid ambiguous translations of version conditions.
- Microsoft Edge versions antérieures à 152.0.4191.62