Improper authentication in [UNKNOWN] libssh
Priority HIGH 82CWE-592Published · Updated
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- None
- Attack complexity
- Low
- Impact type
- Security bypass
- Confidentiality · integrity · availability
- High · High · None
- Fix status
- Fixed
Attack profile from CVSS 3.0 · CNA. Fix status from CNA and Red Hat. Impact type from CWE-287.
Summary
A vulnerability was found in libssh's server-side state machine before versions 0.7.6 and 0.8.4. A malicious client could create channels without first performing authentication, resulting in unauthorized access.
Why it matters now
EPSS 0.91789 99th percentileScored 2026-11-07
Public exploit Yes 1 exploit referenceTagged by the CNA and NVD
Fix Fixed No fixed version in the sources yet
SSVC decision points
Not available: CISA has not published SSVC decision points for this record.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| [UNKNOWN] | libssh | 0.7.6; 0.8.4 | — | No fix listed | CNA |
- libssh Vendor[UNKNOWN] Affected 0.7.6; 0.8.4 Fixed in — No fix listed CNA
CPE configurations NVD · 14
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:a:libssh:libssh:*:*:*:*:*:*:*:* | 0.6.0 to before 0.7.6; 0.8.0 to before 0.8.4 | Vulnerable | libssh |
| cpe:2.3:o:canonical:ubuntu_linux:14.04:*:*:*:lts:*:*:* | 14.04 | Vulnerable | Canonical |
| cpe:2.3:o:canonical:ubuntu_linux:16.04:*:*:*:lts:*:*:* | 16.04 | Vulnerable | Canonical |
| cpe:2.3:o:canonical:ubuntu_linux:18.04:*:*:*:lts:*:*:* | 18.04 | Vulnerable | Canonical |
| cpe:2.3:o:canonical:ubuntu_linux:18.10:*:*:*:*:*:*:* | 18.10 | Vulnerable | Canonical |
| cpe:2.3:o:debian:debian_linux:8.0:*:*:*:*:*:*:* | 8.0 | Vulnerable | Debian |
| cpe:2.3:o:debian:debian_linux:9.0:*:*:*:*:*:*:* | 9.0 | Vulnerable | Debian |
| cpe:2.3:o:redhat:enterprise_linux:7.0:*:*:*:*:*:*:* | 7.0 | Vulnerable | Red Hat |
| cpe:2.3:a:netapp:oncommand_unified_manager:*:*:*:*:*:windows:*:* | 7.3 | Vulnerable | NetApp |
| cpe:2.3:a:netapp:oncommand_unified_manager:*:*:*:*:*:vsphere:*:* | 9.4 | Vulnerable | NetApp |
- cpe:2.3:a:libssh:libssh:*:*:*:*:*:*:*:* Versions 0.6.0 to before 0.7.6; 0.8.0 to before 0.8.4 Vulnerable ·libssh
- cpe:2.3:o:canonical:ubuntu_linux:14.04:*:*:*:lts:*:*:* Versions 14.04 Vulnerable ·Canonical
- cpe:2.3:o:canonical:ubuntu_linux:16.04:*:*:*:lts:*:*:* Versions 16.04 Vulnerable ·Canonical
- cpe:2.3:o:canonical:ubuntu_linux:18.04:*:*:*:lts:*:*:* Versions 18.04 Vulnerable ·Canonical
- cpe:2.3:o:canonical:ubuntu_linux:18.10:*:*:*:*:*:*:* Versions 18.10 Vulnerable ·Canonical
- cpe:2.3:o:debian:debian_linux:8.0:*:*:*:*:*:*:* Versions 8.0 Vulnerable ·Debian
- cpe:2.3:o:debian:debian_linux:9.0:*:*:*:*:*:*:* Versions 9.0 Vulnerable ·Debian
- cpe:2.3:o:redhat:enterprise_linux:7.0:*:*:*:*:*:*:* Versions 7.0 Vulnerable ·Red Hat
- cpe:2.3:a:netapp:oncommand_unified_manager:*:*:*:*:*:windows:*:* Versions 7.3 Vulnerable ·NetApp
- cpe:2.3:a:netapp:oncommand_unified_manager:*:*:*:*:*:vsphere:*:* Versions 9.4 Vulnerable ·NetApp
Show 4 more CPE
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:a:netapp:oncommand_workflow_automation:-:*:*:*:*:*:*:* | not specified by NVD | Vulnerable | NetApp |
| cpe:2.3:a:netapp:snapcenter:-:*:*:*:*:*:*:* | not specified by NVD | Vulnerable | NetApp |
| cpe:2.3:a:netapp:storage_automation_store:-:*:*:*:*:*:*:* | not specified by NVD | Vulnerable | NetApp |
| cpe:2.3:a:oracle:mysql_workbench:*:*:*:*:*:*:*:* | up to 8.0.13 | Vulnerable | Oracle |
- cpe:2.3:a:netapp:oncommand_workflow_automation:-:*:*:*:*:*:*:* Versions not specified by NVD Vulnerable ·NetApp
- cpe:2.3:a:netapp:snapcenter:-:*:*:*:*:*:*:* Versions not specified by NVD Vulnerable ·NetApp
- cpe:2.3:a:netapp:storage_automation_store:-:*:*:*:*:*:*:* Versions not specified by NVD Vulnerable ·NetApp
- cpe:2.3:a:oracle:mysql_workbench:*:*:*:*:*:*:*:* Versions up to 8.0.13 Vulnerable ·Oracle
Remediation
No fixed version listed by the sources yet.
Vendor assessments
Red Hat
Red Hat rating: Important. Red Hat's page for this CVE →
| Product | Status | Plan or fix |
|---|---|---|
| Red Hat Enterprise Linux 7 Extras | Fixed | — |
Not affected: 3 products
- Red Hat Enterprise Linux 6
- Red Hat Enterprise Linux 7
- Red Hat Enterprise Linux 8
Timeline
- 2026-10-02 Threatist record created from CVE-2018-10933
- 2026-10-03 Alias added: GHSA-22gf-f5w4-hrfq
References
Exploit 1
Advisory 8
- USN-3795-1
- USN-3795-2
- DSA-4322
- https://www.libssh.org/security/advisories/CVE-2018-10933.txt
- https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2018-10933
- [debian-lts-announce] 20181018 [SECURITY] [DLA 1548-1] libssh security update
- https://psirt.global.sonicwall.com/vuln-detail/SNWLID-2018-0016
- https://security.netapp.com/advisory/ntap-20190118-0002/
Sources
- CVE-2018-10933 · CVE Program
- CVE-2018-10933 · NVD
- FIRST EPSS
- GHSA-22gf-f5w4-hrfq · GitHub Advisory Database · CC BY 4.0
- CVE-2018-10933 · Red Hat security data · CC BY 4.0
This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences