CVE-2019-1351Network attack vector

Arbitrary file overwrite via misclassified drive paths

Published Jan 24, 2020 · Updated Aug 4, 2024

Path traversal in Git for Visual Studio in Visual Studio 2017 and 2019 allows remote attackers to overwrite files through a crafted clone. Checkout path validation treats an absolute path whose substituted-drive designator is nonalphabetic or Unicode as a relative path, then writes the repository entry to that logical drive. Exploitation requires cloning an untrusted repository while the referenced nonalphabetic drive has been registered with subst; the bounded consequence is arbitrary file overwrite on that drive.

CVSS severity7.5
High
EPSS probability8.72%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Path traversal in Git for Visual Studio in Visual Studio 2017 and 2019 allows remote attackers to overwrite files through a crafted clone. Checkout path validation treats an absolute path whose substituted-drive designator is nonalphabetic or Unicode as a relative path, then writes the repository entry to that logical drive. Exploitation requires cloning an untrusted repository while the referenced nonalphabetic drive has been registered with subst; the bounded consequence is arbitrary file overwrite on that drive.

The record

CVE
CVE-2019-1351
Published
Jan 24, 2020
Updated
Aug 4, 2024
Vendor
Microsoft
Product
Microsoft Visual Studio 2019
Classifications
CWE-706, T1565.001
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Jan 24, 2020CVE publishedPublication date reported by the CVE source.
  2. Aug 4, 2024Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=16.0
  2. Affected versionversion=unspecified

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Microsoft · Microsoft Visual Studio 2019version=16.0; version=unspecified
Microsoft · Microsoft Visual Studio 2017version=15.0; version=unspecified

Published CVSS scores

5.0NIST National Vulnerability DatabaseAV:N/AC:L/Au:N/C:N/I:P/A:N
7.5NIST National Vulnerability DatabaseCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 9, 2026Sep 15, 2026
Latest reporting daySep 15, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-706Use of Incorrectly-Resolved Name or Reference
T1565.001Stored Data Manipulation

Public exploit references

No public exploit references are available in this record.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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