Home/CVE/<p>A remote code execution vulnerability exists in Visual Studio when it improperly handles objects in memory. An attack
CVE

CVE-2020-16856

<p>A remote code execution vulnerability exists in Visual Studio when it improperly handles objects in memory. An attack

<p>A remote code execution vulnerability exists in Visual Studio when it improperly handles objects in memory. An attacker who successfully exploited the vulnerability could run arbitrary code in the context of the current user. If the current user is logged on with administrative user rights, an attacker could take control of the affected system. An attacker could then install programs.

view, change, or delete data.

or create new accounts with full user rights. Users whose accounts are configured to have fewer user rights on the system could be less impacted than users who operate with administrative user rights.</p> <p>To exploit the vulnerability, an attacker would have to convince a user to open a specially crafted file with an affected version of Visual Studio.</p> <p>The update addresses the vulnerability by correcting how Visual Studio handles objects in memory.</p>.

HIGH · CVSS 7.8 EPSS 0.12146
Schedule remediation
  • EPSS ≥ 0.10 - elevated exploitation probability
  • EPSS percentile: top 6% of all CVEs by exploitation likelihood
  • CVSS base score ≥ 7.0
Sigma rules8 YARA rules0

Affected Products & Versions

4

Sigma Hunt Rules

8
Exact rules name this CVE ID. Product rules name an affected product in their title. Related rules cover techniques used by actors who exploited this CVE. Showing the most relevant matches; the complete related set is on the full drill-down.
producthighRenamed Visual Studio Code Tunnel Execution
productmediumNetwork Connection Initiated To Visual Studio Code Tunnels Domain
productmediumVisual Studio Code Tunnel Remote File Creation
productmediumDNS Query To Visual Studio Code Tunnels Domain
productmediumVisual Studio Code Tunnel Execution
productmediumVisual Studio NodejsTools PressAnyKey Arbitrary Binary Execution

Scoring & Timeline

7.8
HIGH · CVSS v3.1 · secure@microsoft.com
View on NVD
Attack Vector
Network Adjacent Local Physical
Attack Complexity
Low High
Privileges Required
None Low High
User Interaction
None Required
Scope
Unchanged Changed
Confidentiality
None Low High
Integrity
None Low High
Availability
None Low High
Published to NVD11 Sep 2020 · 05:15 PM
CVSS VectorCVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

Vendor Advisories

1
msrcCVE-2020-16856Remote Code Execution
🔗

References & Sources

1
Source URLs (vendor pages, mailing lists, write-ups). Exploit/PoC links are in their own section above to avoid duplication.
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