CVE•Published 2025-07-04•Modified 2026-06-15•0 articles on news•5 live references•NVD data

CVE-2025-5372Libssh · Libssh

Vulnerability data via NVD (ingested)

CVSS v3.1

5.0

MEDIUM

CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:L/I:L/A:L

EPSS percentile

Exploit Prediction Scoring System · top 46% of all CVEs

Weaknesses (CWE)

CWE-682Incorrect Calculation

Description

A flaw was found in libssh versions built with OpenSSL versions older than 3.0, specifically in the ssh_kdf() function responsible for key derivation. Due to inconsistent interpretation of return values where OpenSSL uses 0 to indicate failure and libssh uses 0 for success—the function may mistakenly return a success status even when key derivation fails. This results in uninitialized cryptographic key buffers being used in subsequent communication, potentially compromising SSH sessions' confidentiality, integrity, and availability.

Timeline

Published 2025-07-04

Modified 2026-06-15

External references

NVD MITRE Exploit-DB trickest/cve VulnCheck

Search for exposed instances

Shodan + Censys queries derived from NVD's CPE data. The vuln tag catches assets Shodan has explicitly linked to this CVE; the product / banner fingerprints find exposed instances even when the vuln tag was never applied (which is common).

Shodan · vuln tag0 hosts

vuln:CVE-2025-5372

Hosts Shodan has explicitly fingerprinted as vulnerable.

Shodan · product

product:"Libssh Libssh"

All exposed Libssh Libssh instances — cross-reference with the CVE's affected-version range.

Shodan · banner/body mention

http.html:"Libssh"

HTTP body or banner mentions "Libssh" — catches deploys Shodan didn't identify as a product.

More intel sources (5)

Shodan report

vuln:CVE-2025-5372