HOMEVULNERABILITIESCVE-2018-10933
CRITICALPOC

CVE-2018-10933

CWE-592Published: October 17, 2018· Updated: Jun 17, 2026

9.1
CVSS v3.1

Official 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.

NVD Source

Technical Analysis

CVE-2018-10933 can be exploited remotely over the network without requiring physical or adjacent access, significantly expanding the attack surface for threat actors.

The vulnerability requires no privileges and no user interaction, making it a prime target for automated exploitation campaigns and worm-like propagation.

A successful exploit results in complete confidentiality breach (data exposure), full integrity compromise (data manipulation), with a CVSS base score of 9.1.

A proof-of-concept (PoC) exploit exists for CVE-2018-10933. While not yet confirmed in active campaigns, the availability of PoC code increases exploitation risk substantially.

CVSS v3.1 Vector Breakdown

Exploitability
Attack VectorNetwork
Attack ComplexityLow
Privileges Req.None
User InteractionNone
ScopeUnchanged
Impact
ConfidentialityHigh
IntegrityHigh
AvailabilityNone
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N

Affected Vendors & Products

Canonical1 product(s)
ubuntu linux
Debian1 product(s)
debian linux
libssh1 product(s)
libssh
netapp4 product(s)
oncommand unified manageroncommand workflow automationsnapcenterstorage automation store
Oracle1 product(s)
mysql workbench
Red Hat1 product(s)
enterprise linux
Source: NVD CPE · 13 total CPE entries

Exploit & PoC Resources

POC AVAILABLEProof-of-concept code exists
Exploit-DB
Offensive Security exploit database
GitHub PoC Search
Community PoC repositories
Rapid7 / Metasploit
Metasploit module search
PacketStorm
Security advisories & exploits
NVD Detail
Official NIST entry
MITRE CVE
CVE Program entry
External links open in a new tab. Always verify in a controlled environment before use.

Official Patches & Advisories

PATCHhttps://www.oracle.com/technetwork/security-advisory/cpujan2019-5072801.html
PATCHhttps://www.oracle.com/technetwork/security-advisory/cpujan2019-5072801.html
ADVISORYhttp://www.securityfocus.com/bid/105677
ADVISORYhttps://bugzilla.redhat.com/show_bug.cgi?id=CVE-2018-10933
ADVISORYhttps://lists.debian.org/debian-lts-announce/2018/10/msg00010.html
ADVISORYhttps://psirt.global.sonicwall.com/vuln-detail/SNWLID-2018-0016
ADVISORYhttps://security.netapp.com/advisory/ntap-20190118-0002/
ADVISORYhttps://usn.ubuntu.com/3795-1/
ADVISORYhttps://usn.ubuntu.com/3795-2/
ADVISORYhttps://www.debian.org/security/2018/dsa-4322
ADVISORYhttps://www.exploit-db.com/exploits/45638/
ADVISORYhttps://www.libssh.org/security/advisories/CVE-2018-10933.txt
ADVISORYhttp://www.securityfocus.com/bid/105677
ADVISORYhttps://bugzilla.redhat.com/show_bug.cgi?id=CVE-2018-10933
ADVISORYhttps://lists.debian.org/debian-lts-announce/2018/10/msg00010.html
ADVISORYhttps://psirt.global.sonicwall.com/vuln-detail/SNWLID-2018-0016
ADVISORYhttps://security.netapp.com/advisory/ntap-20190118-0002/
ADVISORYhttps://usn.ubuntu.com/3795-1/
ADVISORYhttps://usn.ubuntu.com/3795-2/
ADVISORYhttps://www.debian.org/security/2018/dsa-4322
ADVISORYhttps://www.exploit-db.com/exploits/45638/
ADVISORYhttps://www.libssh.org/security/advisories/CVE-2018-10933.txt

All References (22)

→
http://www.securityfocus.com/bid/105677Third Party Advisory · VDB Entry
→
https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2018-10933Issue Tracking · Third Party Advisory
→
https://lists.debian.org/debian-lts-announce/2018/10/msg00010.htmlMailing List · Third Party Advisory
→
https://psirt.global.sonicwall.com/vuln-detail/SNWLID-2018-0016Third Party Advisory
→
https://security.netapp.com/advisory/ntap-20190118-0002/Third Party Advisory
→
https://usn.ubuntu.com/3795-1/Third Party Advisory
→
https://usn.ubuntu.com/3795-2/Third Party Advisory
→
https://www.debian.org/security/2018/dsa-4322Third Party Advisory
→
https://www.exploit-db.com/exploits/45638/Exploit · Third Party Advisory · VDB Entry
→
https://www.libssh.org/security/advisories/CVE-2018-10933.txtVendor Advisory
→
https://www.oracle.com/technetwork/security-advisory/cpujan2019-5072801.htmlPatch · Third Party Advisory
→
http://www.securityfocus.com/bid/105677Third Party Advisory · VDB Entry
→
https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2018-10933Issue Tracking · Third Party Advisory
→
https://lists.debian.org/debian-lts-announce/2018/10/msg00010.htmlMailing List · Third Party Advisory
→
https://psirt.global.sonicwall.com/vuln-detail/SNWLID-2018-0016Third Party Advisory

Quick Facts

CVE IDCVE-2018-10933
CVSS Score9.1 / 10
SeverityCRITICAL
WeaknessCWE-592
CISA KEVNo
ExploitPOC
Affected6 vendor(s)
PublishedOct 17, 2018

Related CVEs (CWE-592)

CVE-2019-3899
9.8
CVE-2026-43512
9.8
CVE-2018-14643
9.8
CVE-2014-5432
9.8
CVE-2018-1085
9.0
CVE-2017-2684
9.0

Recommended Actions

  • →Apply vendor patches immediately
  • →Monitor CVE-2018-10933 in threat intel feeds
  • →Review IDS/IPS signatures for exploitation attempts
Data sourced from NVD (NIST), CISA KEV, and EPSS (FIRST). Analysis generated by CTIWATCH.COM. CVE data is provided under the NVD usage policy.
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