CVE-2018-10933
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…
- 9.1CriticalCVSS base score
- 91.8%Exploitation in 30 daysEPSS · top 0.2% of all CVEs
- NoKnown exploitednot in CISA's KEV catalog
- 3Public exploitsMetasploit, Nuclei and Exploit-DB
Description
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.
Public exploit
An exploit or proof of concept is public: anyone can try it against an unpatched system. The public collections list a Metasploit module and 2 Exploit-DB entries for it. A reference of the record is tagged as an exploit.
Show the exploits4
Metasploit modules1 module
- libssh Authentication Bypass Scanner (Metasploit module) (opens in a new tab)
auxiliary/scanner/ssh/libssh_auth_bypassRank normaldisclosed 16 Oct 2018
Exploit-DB2 entries
- LibSSH 0.7.6 / 0.8.4 - Unauthorized Access (Exploit-DB entry) (opens in a new tab)
EDB-ID 46307remote, linuxpublished 20 Oct 2018Verified
- libSSH - Authentication Bypass (Exploit-DB entry) (opens in a new tab)
EDB-ID 45638remote, linuxpublished 18 Oct 2018Not verified
References tagged exploit1 reference
- 45638 (opens in a new tab)exploitx_refsource_EXPLOIT-DBx_transferred
Modules, templates and exploits as listed by the Metasploit Framework (BSD-3-Clause), ProjectDiscovery's Nuclei templates (MIT) and the Exploit Database (GPLv2), read once a day. Where the data comes from
Timeline
ID reserved
By redhat
- 5 months later
· 5 months later
Published
- 6 years later
· 6 years later
Record updated
Changes after publication (a new score, a public exploit, EPSS crossing 1, 10 or 50 %, leaving KEV) are kept since November 2026; earlier ones are not known.
Scores
| Scored by | CVSS | Score | Vector |
|---|---|---|---|
| redhatCNA (assigner) | 3.0 | Critical9.1 | CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N |
| NVDNVD · Modified | 3.0 | Critical9.1 | CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N |
- EPSS (exploitation in 30 days)
- 91.8% · top 0.2% of all CVEs (10 Nov 2026)
The list uses the assigner's score when there is one, then CISA's, then NVD's: Critical 9.1.
Affected products
References
11
- USN-3795-1 (opens in a new tab)vendor-advisoryx_refsource_UBUNTUx_transferred
- https://www.oracle.com/technetwork/security-advisory/cpujan2019-5072801.html (opens in a new tab)x_refsource_CONFIRMx_transferred
- USN-3795-2 (opens in a new tab)vendor-advisoryx_refsource_UBUNTUx_transferred
- DSA-4322 (opens in a new tab)vendor-advisoryx_refsource_DEBIANx_transferred
- 45638 (opens in a new tab)exploitx_refsource_EXPLOIT-DBx_transferred
- https://www.libssh.org/security/advisories/CVE-2018-10933.txt (opens in a new tab)x_refsource_CONFIRMx_transferred
- https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2018-10933 (opens in a new tab)x_refsource_CONFIRMx_transferred
- 105677 (opens in a new tab)vdb-entryx_refsource_BIDx_transferred
- [debian-lts-announce] 20181018 [SECURITY] [DLA 1548-1] libssh security update (opens in a new tab)mailing-listx_refsource_MLISTx_transferred
- https://psirt.global.sonicwall.com/vuln-detail/SNWLID-2018-0016 (opens in a new tab)x_refsource_CONFIRMx_transferred
- https://security.netapp.com/advisory/ntap-20190118-0002/ (opens in a new tab)x_refsource_CONFIRMx_transferred
Sources
The same CVE in the primary databases and aggregators, to check against.
- CVE.org record (opens in a new tab)
- CVE List JSON (GitHub) (opens in a new tab)
- NVD (opens in a new tab)
- FIRST EPSS (opens in a new tab)
- EUVD EUVD-2018-2986 (opens in a new tab)
- OSV.dev (opens in a new tab)
- GitHub Advisories (opens in a new tab)
- CIRCL Vulnerability-Lookup (opens in a new tab)
Badge for a README or a ticket
[](https://cveledger.app/cve/CVE-2018-10933)Record last updated .