CVE Tools
Sign in

CVE-2025-15079

libssh global known_hosts override

Published: Jan 8, 2026Updated: Jan 20, 2026 Sources: CVE List NVD BDUCWE-297
NVD MITRE
5.3CVSSMEDIUM
EPSS Score
0.5%
Top 63.9%
CISA KEV
Not in KEV
Exploits
No Known Exploits
Remediation
Patch Available

Description

When doing SSH-based transfers using either SCP or SFTP, and setting the known_hosts file, libcurl could still mistakenly accept connecting to hosts *not present* in the specified file if they were added as recognized in the libssh *global* known_hosts file.

CVSS Vector Breakdown

AV:NAC:HPR:NUI:RS:UC:HI:NA:N
Exploitability
AV:NAttack Vector
Network
AC:HAttack Complexity
High
PR:NPrivileges Required
None
UI:RUser Interaction
Required
Scope
S:UScope
Unchanged
Impact
C:HConfidentiality
High
I:NIntegrity
None
A:NAvailability
None
Open in CVSS calculator →

Weaknesses

CWE-297

Affected Products

curlcurl
Library
OSS Libraries / generic-library
UbuntuCanonical Ltd.
On-premOS
Operating Systems / linux-distro
Debian GNU/LinuxСообщество свободного программного обеспечения
On-premOS
Operating Systems / linux-distro
Astra Linux Special EditionООО «РусБИТех-Астра»
On-premOS
Operating Systems / linux-distro
РЕД ОСООО «Ред Софт»
On-premOS
Operating Systems / linux-distro
curloss-projectUSOSS Librariesaka libcurl, wcurl
canonical ltd.commercialGBOperating Systemsaka canonical
сообщество свободного программного обеспеченияoss-projectOperating Systemsaka сообщество свободного программного обеспечения, fsf
ооо «русбитех-астра»commercialRUOperating Systemsaka rusbitech-astra
ооо «ред софт»commercialRUOperating Systemsaka red soft
and 2 more affected products View all →

Exploitability

Official Patch Available

References

https://curl.se/docs/CVE-2025-15079.json
curl.se
https://curl.se/docs/CVE-2025-15079.html
curl.se
https://hackerone.com/reports/3477116
hackerone.com
and 8 more references View all →

Timeline

Published
Jan 8, 2026
Last Updated
Jan 20, 2026

Unlock Complete Vulnerability Intelligence

Get the full picture for CVE-2025-15079 and every CVE in our database. Create a free account — no credit card required.

Create Free Account
Plain-language analysis
Impact assessment and exploitation scenario in plain English
Attack graph visualization
Interactive attack path and kill chain mapping
Exploit details & PoC links
ExploitDB, Metasploit, GitHub PoCs with direct links
Nuclei scanner templates
Ready-to-use vulnerability scanner templates
Full remediation guide
Patch instructions, workarounds, and compliance impact
Interactive AI chat
Ask questions about this vulnerability in natural language
Related vulnerabilities
Semantically similar CVEs and attack patterns
REST API & MCP access
Integrate vulnerability data into your workflows