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CVE-2025-4878

Libssh: use of uninitialized variable in privatekey_from_file()

Published: Jul 22, 2025Updated: May 19, 2026 Sources: CVE List NVD BDUCWE-416
NVD MITRE
3.6CVSSLOW
EPSS Score
0.2%
Top 92.3%
CISA KEV
Not in KEV
Exploits
No Known Exploits
Remediation
Patch Available

Description

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.

CVSS Vector Breakdown

AV:LAC:HPR:LUI:NS:UC:LI:LA:N
Exploitability
AV:LAttack Vector
Local
AC:HAttack Complexity
High
PR:LPrivileges Required
Low
UI:NUser Interaction
None
Scope
S:UScope
Unchanged
Impact
C:LConfidentiality
Low
I:LIntegrity
Low
A:NAvailability
None
Open in CVSS calculator →

Weaknesses

CWE-416

Affected Products

UbuntuCanonical Ltd.
On-premOS
Operating Systems / linux-distro
Suse Linux Enterprise ServerNovell Inc.
On-premOS
Operating Systems / linux-distro
SUSE Linux Enterprise Server for SAP ApplicationsNovell Inc.
On-premOS
Operating Systems / linux-distro
Red Hat Enterprise LinuxRed Hat Inc.
On-premOS
Operating Systems / linux-distro
SUSE Linux Enterprise Module for BasesystemNovell Inc.
On-premOS
Operating Systems / linux-distro
canonical ltd.commercialGBOperating Systemsaka canonical
novell inc.commercialUSOperating Systems
red hat inc.commercialUSOperating Systemsaka red hat
and 23 more affected products View all →

Attack Graph

Products CVE Techniques Tactics

Click technique nodes to view MITRE ATT&CK details. Scroll to zoom, drag to pan.

Exploitability

Official Patch Available

MITRE ATT&CK

2 techniques
Initial Access
Privilege Escalation
View detailed technique mapping

References

http://www.slackware.com/security/viewer.php?l=slackware-security&y=2025&m=slackware-security.392586
slackware.com
https://www.libssh.org/security/advisories/CVE-2025-4878.txt
libssh.org
https://git.libssh.org/projects/libssh.git/commit/?id=697650caa97eaf7623924c75f9fcfec6dd423cd1
git.libssh.org
and 18 more references View all →

Timeline

Published
Jul 22, 2025
Last Updated
May 19, 2026

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