# CERT-FR Flags Visual Studio Security Bypass Flaw

Published: 2026-11-02 · Severity: routine
Canonical: https://vorant.io/reports/b1e75ef4-ff5c-5ecb-8b5f-7306afed83c9/cert-fr-flags-visual-studio-security-bypass-flaw
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> CERT-FR advisory warns of a security-policy bypass vulnerability affecting multiple Microsoft Visual Studio versions; patches are available.

Source: cert.cyber.gouv.fr — https://www.cert.cyber.gouv.fr/avis/CERTFR-2026-AVI-1441

## What to check

- Applies to: The 1 CVE named below. Whether you run an affected version is not assessed: check the versions the source lists.
- Exploitation: No exploitation in the wild and no public exploit is recorded for the CVEs named.

CERT-FR issued an advisory describing a vulnerability in Microsoft Visual Studio (CVE-2026-118147) that allows an attacker to bypass a security policy mechanism. The affected products span Visual Studio 2017 (15.9, prior to 15.9.84), Visual Studio 2019 (16.11, prior to 16.11.62), Visual Studio 2022 (17.14, prior to 17.14.44), and Visual Studio 2026 (18.11, prior to 18.11.3).

The advisory does not indicate active exploitation in the wild and provides no technical details on the attack vector beyond the impact category (security policy bypass). Microsoft published the corresponding security bulletin on 30 October 2026. Defenders running any of the listed Visual Studio versions below the specified fixed builds should apply the vendor patches referenced in the Microsoft Security Response Center update guide as soon as feasible.

## Mentioned in this report

- Vulnerabilities: CVE-2026-118147

Source reporting: https://www.cert.cyber.gouv.fr/avis/CERTFR-2026-AVI-1441

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