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CVE-2025-21264

Visual Studio Code Security Feature Bypass Vulnerability

HIGH
7.1
CVSS Score
Published: May 13, 2025 at 04:58 PM UTC
Updated: June 17, 2026 at 08:42 AM UTC
2 products affected across 1 vendorVisual Studio CodeGitHub Copilot Chat

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Severity
HIGH7.1
Exploit prediction
EPSS 0.8%
SSVC
No known exploit

Description

Files or directories accessible to external parties in Visual Studio Code allows an unauthorized attacker to bypass a security feature locally.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

Visual Studio Code· Microsoft
95%
v < 1.100.11.0.0 ≤ v < 1.100.11.0.0
Affected range stops below 1.100.1, so it looks safe — our inference, not a vendor statement
GitHub Copilot Chat· Microsoft
60%
0.27.0 ≤ v < 0.27.20.27.0
Affected range stops below 0.27.2, so it looks safe — our inference, not a vendor statement

Remediation

No guide yet

No remediation guidance has been written for this CVE yet. What the record does show:

Patch and advisory references

References (1)

Vendor AdvisoryPatch
Source: [email protected]
https://msrc.microsoft.com/update-guide/vulnerability/CVE-2025-21264

SSVC — Action Prioritization

SSVCNo known exploitNot automatablePartial impact

SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.

CVSS

7.1HIGHmicrosoft
Vector?

Quick Info

StatusANALYZED
CWE
CWE-552

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