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CVE-2026-45482: Microsoft Visual Studio Code CoPilot Chat Security Feature Bypass Vulnerability

highCVSS 8.4CVE-2026-45482
Initialization of a resource with an insecure default in GitHub Copilot and Visual Studio Code allows an unauthorized attacker to disclose information over a network.

CSIRTS triage

vendor: Microsoftproduct: Visual Studio CodeInformation disclosureOther
What
A security feature bypass vulnerability allows an unauthorized attacker to disclose information over a network.
Who is affected
Deployments of GitHub Copilot and Visual Studio Code.
Urgency
Remediation is urgent due to the high severity and potential for information disclosure.
Action
Update to the latest version of Visual Studio Code.

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Details

Source
Microsoft Security Response Center (INTL · vendor-psirt · site)
Severity
high — CVSS 8.4
Published
2026-06-09
Exploitation
Not in CISA KEV at last sync

Original advisory: https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-45482

Exploitation outlook

EPSS (FIRST.org) estimates each CVE’s probability of exploitation in the next 30 days — here is the CSIRTS.com read on those numbers.

Referenced CVEs

CVECSIRTS overviewExternal
CVE-2026-45482coverage & exploitation statusNVD · CVE.org

Recent advisories for Microsoft Visual Studio

A cluster of recent advisories against the same product widens the attack surface — attackers routinely chain freshly published CVEs on one product, so review these together.

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