CVE-2025-5987 - CVE House
Back to Database
Status published High CVE-2025-5987

Libssh: invalid return code for chacha20 poly1305 with openssl backend

Vulnerability Description

A flaw was found in libssh when using the ChaCha20 cipher with the OpenSSL library. If an attacker manages to exhaust the heap space, this error is not detected and may lead to libssh using a partially initialized cipher context. This occurs because the OpenSSL error code returned aliases with the SSH_OK code, resulting in libssh not properly detecting the error returned by the OpenSSL library. This issue can lead to undefined behavior, including compromised data confidentiality and integrity or crashes.

Impact Analysis

Refer to official advisory for detailed impact metrics.

Remediation

Ensure systems are updated to the latest vendor-supplied patch levels.

THREAT MONITOR

Am I Vulnerable?

Launch our assessment wizard to check if your infrastructure is exposed to • CVE-2025-5987

Credits & Attribution

No credits recorded in the NVD database.

References

More from Unknown

View All →
CVE-2025-9978
Jeg Elementor Kit < 2.7.0 - Author+ Stored XSS
Unknown 0
CVE-2025-9959
Sandbox escape in smolagents Local Python execution environment via dunder attributes
High 7.6
CVE-2025-9900
Libtiff: libtiff write-what-where
High 8.8
CVE-2025-9784
Undertow: undertow madeyoureset http/2 ddos vulnerability
High 7.5
CVE-2025-9710
Responsive Lightbox & Gallery < 2.5.3 - Unauthenticated Stored-XSS via Comments
Unknown 0

Affected Vendor

Affected Software

Red Hat Enterprise Linux 10, Red Hat Enterprise Linux 10.0 Extended Update Support, Red Hat Enterprise Linux 9, Red Hat Enterprise Linux 9.2 Update Services for SAP Solutions, Red Hat Enterprise Linux 9.4 Extended Update Support, Red Hat Enterprise Linux 9.6 Extended Update Support, Red Hat OpenShift Container Platform 4.13, Red Hat OpenShift Container Platform 4.14, Red Hat OpenShift Container Platform 4.15, Red Hat OpenShift Container Platform 4.16, Red Hat OpenShift Container Platform 4.17, Red Hat OpenShift Container Platform 4.18, Red Hat OpenShift Container Platform 4.19, Red Hat OpenShift Container Platform 4.20, Red Hat Enterprise Linux 6, Red Hat Enterprise Linux 7, Red Hat Enterprise Linux 8
Vulnerable Versions:
0.10.0, 0:0.11.1-5.el10_1, 0:0.11.1-4.el10_0.1, 0:0.10.4-17.el9_7, 0:0.10.4-9.el9_2.2, 0:0.10.4-13.el9_4.2, 0:0.10.4-15.el9_6.1, 413.92.202602240113-0, 414.92.202601191325-0, 415.92.202601271320-0, 416.94.202601160124-0, 417.94.202601120213-0, 418.94.202601202224-0, 4.19.9.6.202601260820-0, 4.20.9.6.202601211057-0

Timeline

Official Publish: July 7th, 2025
Last Modified: June 30th, 2026
Added to House: July 22nd, 2026

CVSS Vectors

V3: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H

Weaknesses (CWE)

CWE-393

MITRE ATT&CK TTPs

No associated TTPs found for this vulnerability.