Vulnerability DatabaseCVE-2025-4878
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CVE-2025-4878
Published:July 22, 2025
Updated:May 17, 2026
A vulnerability was found in libssh, where an uninitialized variable exists under certain conditions in the privatekey_from_file() function. This flaw can be triggered if the file specified by the filename doesn't exist and may lead to possible signing failures or heap corruption.
Affected Packages
https://git.libssh.org/projects/libssh.git (SCM_GIT):
Affected version(s) >=libssh-0.5.1 <libssh-0.11.2
Fix Suggestion:
Update to version libssh-0.11.2
Related Resources (6)
https://git.libssh.org/projects/libssh.git/commit/?id=697650caa97eaf7623924c75f9fcfec6dd423cd1
https://www.libssh.org/security/advisories/CVE-2025-4878.txt
https://bugzilla.redhat.com/show_bug.cgi?id=2376184
https://seclists.org/oss-sec/2025/q2/284
https://access.redhat.com/security/cve/CVE-2025-4878
https://git.libssh.org/projects/libssh.git/commit/?id=b35ee876adc92a208d47194772e99f9c71e0bedb
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CVSS v4
Base Score:
2
Attack Vector
LOCAL
Attack Complexity
HIGH
Attack Requirements
NONE
Privileges Required
LOW
User Interaction
NONE
Vulnerable System Confidentiality
LOW
Vulnerable System Integrity
LOW
Vulnerable System Availability
NONE
Subsequent System Confidentiality
NONE
Subsequent System Integrity
NONE
Subsequent System Availability
NONE
Exploit Maturity
POC
CVSS v3
Base Score:
3.6
Attack Vector
LOCAL
Attack Complexity
HIGH
Privileges Required
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
LOW
Integrity
LOW
Availability
NONE
Exploit Maturity
PROOF-OF-CONCEPT
Weakness Type (CWE)
Use After Free
CWE-416
EPSS
Base Score:
0.04