NVD

CVE-2025-5372 Detail

Modified After Enrichment

This CVE record has been updated after NVD enrichment efforts were completed. Enrichment data supplied by the NVD may require amendment due to these changes.

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.

Metrics

NVD enrichment efforts reference publicly available information to associate vector strings. CVSS information contributed by other sources is also displayed.

CVSS 4.0 Severity and Vector Strings:

NIST: NVD

N/A

NVD assessment not yet provided.

CVSS 3.x Severity and Vector Strings:

NIST: NVD

Base Score: 8.8 HIGH

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

Nist CVSS score does not match with CNA score

CNA: Red Hat, Inc.

Base Score: 5.0 MEDIUM

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

CVSS 2.0 Severity and Vector Strings:

National Institute of Standards and Technology

NIST: NVD

Base Score: N/A

NVD assessment not yet provided.

References to Advisories, Solutions, and Tools

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URL	Source(s)	Tag(s)
https://access.redhat.com/errata/RHSA-2025:21977	Red Hat, Inc.
https://access.redhat.com/errata/RHSA-2025:23024	Red Hat, Inc.
https://access.redhat.com/errata/RHSA-2026:20610	Red Hat, Inc.
https://access.redhat.com/errata/RHSA-2026:24349	Red Hat, Inc.
https://access.redhat.com/errata/RHSA-2026:25911	Red Hat, Inc.
https://access.redhat.com/security/cve/CVE-2025-5372	Red Hat, Inc.	Third Party Advisory
https://bugzilla.redhat.com/show_bug.cgi?id=2369388	Red Hat, Inc.	Issue Tracking Third Party Advisory

Weakness Enumeration

CWE-ID	CWE Name	Source
CWE-682	Incorrect Calculation	Red Hat, Inc.

Known Affected Software Configurations Switch to CPE 2.2

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Change History

9 change records found show changes

CVE Modified by Red Hat, Inc. 6/17/2026 5:47:47 AM

Action

Type

Old Value

New Value

Added

Affected

Record truncated, showing 2048 of 5659 characters.
View Entire Change Record

[{"vendor":"libssh","product":"libssh","defaultStatus":"unaffected","collectionURL":"https://git.libssh.org/projects/libssh.git","packageName":"libssh","versions":[{"version":"0","lessThan":"0.11.2","versionType":"semver","status":"affected"}]},{"vendor":"Red Hat","product":"Red Hat Enterprise Linux 8","defaultStatus":"affected","collectionURL":"https://access.redhat.com/downloads/content/package-browser/","packageName":"libssh","cpes":["cpe:/a:redhat:enterprise_linux:8::appstream","cpe:/o:redhat:enterprise_linux:8::baseos"],"versions":[{"version":"0:0.9.6-16.el8_10","lessThan":"*","versionType":"rpm","status":"unaffected"}]},{"vendor":"Red Hat","product":"Red Hat Enterprise Linux 8","defaultStatus":"affected","collectionURL":"https://access.redhat.com/downloads/content/package-browser/","packageName":"libssh","cpes":["cpe:/a:redhat:enterprise_linux:8::appstream","cpe:/o:redhat:enterprise_linux:8::baseos"],"versions":[{"version":"0:0.9.6-16.el8_10","lessThan":"*","versionType":"rpm","status":"unaffected"}]},{"vendor":"Red Hat","product":"Red Hat Enterprise Linux 8.4 Advanced Mission Critical Update Support","defaultStatus":"affected","collectionURL":"https://access.redhat.com/downloads/content/package-browser/","packageName":"libssh","cpes":["cpe:/a:redhat:rhel_aus:8.4::appstream","cpe:/a:redhat:rhel_eus_long_life:8.4::appstream","cpe:/o:redhat:rhel_aus:8.4::baseos","cpe:/o:redhat:rhel_eus_long_life:8.4::baseos"],"versions":[{"version":"0:0.9.4-2.el8_4.2","lessThan":"*","versionType":"rpm","status":"unaffected"}]},{"vendor":"Red Hat","product":"Red Hat Enterprise Linux 8.4 Extended Update Support Long-Life Add-On","defaultStatus":"affected","collectionURL":"https://access.redhat.com/downloads/content/package-browser/","packageName":"libssh","cpes":["cpe:/a:redhat:rhel_aus:8.4::appstream","cpe:/a:redhat:rhel_eus_long_life:8.4::appstream","cpe:/o:redhat:rhel_aus:8.4::baseos","cpe:/o:redhat:rhel_eus_long_life:8.4::baseos"],"versions":[{"version":"0:0.9.4-2.el8_4.2","lessThan":"*","versionType":"rpm","status":"unaffe

Initial Analysis by NIST 8/22/2025 10:01:21 AM

Action	Type	New Value
Added	CVSS V3.1	AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Added	CPE Configuration	OR cpe:2.3:a:libssh:libssh::::::::* versions up to (excluding) 0.11.2
Added	CPE Configuration	OR cpe:2.3:o:redhat:enterprise_linux:7.0::::::: cpe:2.3:o:redhat:enterprise_linux:6.0::::::: cpe:2.3:o:redhat:enterprise_linux:8.0::::::: cpe:2.3:a:redhat:openshift_container_platform:4.0::::::: cpe:2.3:o:redhat:enterprise_linux:9.0::::::: cpe:2.3:o:redhat:enterprise_linux:10.0:::::::
Added	Reference Type	Red Hat, Inc.: https://access.redhat.com/security/cve/CVE-2025-5372 Types: Third Party Advisory
Added	Reference Type	Red Hat, Inc.: https://bugzilla.redhat.com/show_bug.cgi?id=2369388 Types: Issue Tracking, Third Party Advisory

New CVE Received from Red Hat, Inc. 7/04/2025 2:15:24 AM

Action	Type	New Value
Added	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.
Added	CVSS V3.1	AV:N/AC:H/PR:L/UI:N/S:U/C:L/I:L/A:L
Added	CWE	CWE-682
Added	Reference	https://access.redhat.com/security/cve/CVE-2025-5372
Added	Reference	https://bugzilla.redhat.com/show_bug.cgi?id=2369388

Quick Info

CVE Dictionary Entry:
CVE-2025-5372
NVD Published Date:
07/04/2025
NVD Last Modified:
06/17/2026
Source:
Red Hat, Inc.

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Information Technology Laboratory

National Vulnerability Database

National Vulnerability Database

CVE-2025-5372 Detail

Description

Metrics

References to Advisories, Solutions, and Tools

Weakness Enumeration

Known Affected Software Configurations Switch to CPE 2.2

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Change History

CVE Modified by CISA-ADP 6/17/2026 5:47:47 AM

CVE Modified by Red Hat, Inc. 6/17/2026 5:47:47 AM

CVE Modified by Red Hat, Inc. 6/14/2026 11:16:22 PM

CVE Modified by Red Hat, Inc. 6/07/2026 11:16:19 PM

CVE Modified by Red Hat, Inc. 5/26/2026 3:16:17 AM

CVE Modified by Red Hat, Inc. 12/10/2025 2:16:14 PM

CVE Modified by Red Hat, Inc. 11/24/2025 4:16:03 PM

Initial Analysis by NIST 8/22/2025 10:01:21 AM

New CVE Received from Red Hat, Inc. 7/04/2025 2:15:24 AM

Quick Info