CVE-2019-3859 - CVE House
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Status published Medium CVE-2019-3859

An out of bounds read flaw was discovered in libssh2...

Vulnerability Description

An out of bounds read flaw was discovered in libssh2 before 1.8.1 in the _libssh2_packet_require and _libssh2_packet_requirev functions. A remote attacker who compromises a SSH server may be able to cause a Denial of Service or read data in the client memory.

Impact Analysis

Refer to official advisory for detailed impact metrics.

Remediation

Ensure systems are updated to the latest vendor-supplied patch levels.

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Credits & Attribution

No credits recorded in the NVD database.

Affected Vendor

The libssh2 Project

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Affected Software

libssh2
Vulnerable Versions:
1.8.1

Timeline

Official Publish: March 20th, 2019
Last Modified: December 18th, 2025
Added to House: July 20th, 2026

CVSS Vectors

V3: CVSS:3.0/AV:N/AC:H/PR:N/UI:R/S:U/C:L/I:L/A:L

Weaknesses (CWE)