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

highCVSS 8.4CVE-2026-45482

Improper limitation of a pathname to a restricted directory ('path traversal') in GitHub Copilot and Visual Studio Code allows an unauthorized attacker to bypass a security feature locally.

CSIRTS triage

vendor: Microsoft product: Visual Studio Code Information 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.

AI-assisted analysis generated from the source advisory — verify against the original.

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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.

Low exploitation riskCVE-2026-454820.34% 30-day exploitation probability — currently an unlikely target, but scores change as exploit code circulates. Riskier than 28% of all EPSS-scored CVEs.

Referenced CVEs

CVE	CSIRTS overview	External
CVE-2026-45482	coverage & exploitation status	NVD · CVE.org

Same CVEs, other sources

How other CERTs, PSIRTs and databases cover the vulnerabilities in this advisory.

high[UPDATE] [high] Microsoft DeveloperTools: Multiple vulnerabilitiescert-bund