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Fencer Vulns
high 7.1

CVE-2025-21264 json

Visual Studio Code Security Feature Bypass Vulnerability

published 2025-05-13 17 mo ago modified 2026-06-17 4 mo ago also EUVD-2025-14440

cvss
7.1
version 3.1, CNA
cisa kev
Not listed
not in CISA's catalog
epss
0.8%
EPSS 0.8% chance of exploitation in 30 days, percentile 56%
public exploits
0
none known

Summary

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

Patch / fix

  • Microsoft Microsoft Visual Studio Code CoPilot Chat Extension 0.27.2
  • Microsoft Visual Studio Code 1.100.1

CISA SSVC

Exploitation
none
Automatable
no
Technical impact
partial
Assessed
17 mo ago

Exploit prediction

0.79% chance of exploitation in the next 30 days, higher than 56% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by version score vector
CNA 3.1 7.1 CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:C/C:H/I:L/A:N/E:U/RL:O/RC:C
CNA 3.1 7.1 CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:C/C:H/I:L/A:N

Affected products

  • Microsoft Microsoft Visual Studio Code CoPilot Chat Extension
  • Microsoft Visual Studio Code

Classification

Weakness
  • CWE-552 Files or Directories Accessible to External Parties

References

Sources

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.