CVE-2025-14821
highpriority · track · 28EPSS 0.001 · 2 %ileDEEUNLRUUSEPSS · scored 2026-10-22
A flaw was found in libssh. This vulnerability allows local man-in-the-middle attacks, security downgrades of SSH (Secure Shell) connections, and manipulation of trusted host information, posing a significant risk to the confidentiality, integrity, and availability of SSH communications via an insecure default configuration on Windows systems where the library automatically loads configuration files from the C:\etc directory, which can be created and modified by unprivileged local users.
cvss
Technical severity, 0–10. One row per scoring source.
base score 0–10 · higher = more severe · hover a vector to decode⚠ sources disagree · medium–high · 6.4–7.8
ssvc
A stakeholder decision — act, attend, or track — from exploitation and impact.
weaknesses
The CWE weakness classes this flaw belongs to.
affected products (15)
Products and version ranges known to be affected.
advisories (3)
Vendor and ecosystem advisories describing this.
- NCSC-2026-0315Kwetsbaarheden verholpen in Oracle MySQLNL2026-08-19csaf · ncsc_nlNL
Oracle heeft kwetsbaarheden verholpen in Oracle MySQL Cluster en Oracle MySQL Connector/ODBC.
- WID-SEC-W-2026-2437Oracle Communications: Mehrere SchwachstellenDeutsch2026-07-21csaf · cert_bundDE
Ein entfernter, anonymer oder authentisierter Angreifer kann mehrere Schwachstellen in Oracle Communications ausnutzen, um die Vertraulichkeit, Integrität und Verfügbarkeit zu gefährden.
- WID-SEC-W-2026-2903Oracle MySQL: Mehrere SchwachstellenDeutsch2026-08-18csaf · cert_bundDE
Ein entfernter, anonymer oder authentisierter Angreifer kann mehrere Schwachstellen in Oracle MySQL ausnutzen, um die Vertraulichkeit, Integrität und Verfügbarkeit zu gefährden.
also known as (4)
Other names and identifiers for this entity.
sources
Which sources assert this record, and when.
references (13)
External citations — patches, advisories, analysis.
- https://access.redhat.com/security/cve/CVE-2025-14821cnnvd
- https://access.redhat.com/security/cve/cve-2025-14821cnnvd
- https://bugzilla.redhat.com/show_bug.cgi?id=2423148cnnvd
- https://vigilance.fr/vulnerability/libssh-privilege-escalation-via-Windows-Etc-Configuration-Files-49665cnnvd
- https://www.libssh.org/2026/02/10/libssh-0-12-0-and-0-11-4-security-releases/cnnvd
- https://access.redhat.com/errata/RHSA-2026:7067enisa_euvd
- https://access.redhat.com/security/cve/CVE-2025-14821enisa_euvd
- https://bugzilla.redhat.com/show_bug.cgi?id=2423148enisa_euvd
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