// For flags

CVE-2020-22218

libssh2: use-of-uninitialized-value in _libssh2_transport_read

Severity Score

7.5
*CVSS v3.1

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

0
*Multiple Sources

Exploited in Wild

-
*KEV

Decision

Attend
*SSVC
Descriptions

An issue was discovered in function _libssh2_packet_add in libssh2 1.10.0 allows attackers to access out of bounds memory.

A flaw was found in the libssh2 library. An out-of-bounds access issue can occur due to an improper initialization of a variable, resulting in a crash in the application linked to the library.

It was discovered that libssh2 incorrectly handled memory access. An attacker could possibly use this issue to cause a crash.

*Credits: N/A
CVSS Scores
Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
None
Scope
Unchanged
Confidentiality
None
Integrity
None
Availability
High
Attack Vector
Network
Attack Complexity
Low
Authentication
None
Confidentiality
None
Integrity
None
Availability
Complete
* Common Vulnerability Scoring System
SSVC
  • Decision:Attend
Exploitation
None
Automatable
Yes
Tech. Impact
Partial
* Organization's Worst-case Scenario
Timeline
  • 2020-08-13 CVE Reserved
  • 2023-08-22 CVE Published
  • 2024-10-03 CVE Updated
  • 2025-03-30 EPSS Updated
  • ---------- Exploited in Wild
  • ---------- KEV Due Date
  • ---------- First Exploit
CWE
  • CWE-125: Out-of-bounds Read
  • CWE-787: Out-of-bounds Write
CAPEC
Affected Vendors, Products, and Versions
Vendor Product Version Other Status
Vendor Product Version Other Status <-- --> Vendor Product Version Other Status
Libssh2
Search vendor "Libssh2"
 Libssh2
Search vendor "Libssh2" for product "Libssh2"
 1.10.0
Search vendor "Libssh2" for product "Libssh2" and version "1.10.0"
-
Affected