CVE-2018-7750
A public proof of concept exists; no exploitation attested.
- Published2018-03-13
- Fixed in2.4.1 · 2.3.2 · 2.2.3 · 2.1.5 · 2.0.8 · 1.18.5
- WeaknessCWE-287
Am I affected?
Debian, Ubuntu or Red Hat sometimes backport a fix without changing the upstream version number: such a version reads « to verify », never « affected ».With a domain, we read the version its public headers and pages expose. A distribution build can carry the fix under an older number.
Description
transport.py in the SSH server implementation of Paramiko before 1.17.6, 1.18.x before 1.18.5, 2.0.x before 2.0.8, 2.1.x before 2.1.5, 2.2.x before 2.2.3, 2.3.x before 2.3.2, and 2.4.x before 2.4.1 does not properly check whether authentication is completed before processing other requests, as demonstrated by channel-open. A customized SSH client can simply skip the authentication step.
Timeline
dates in UTC- 2018-03-1318:29CVE publishedNVD
- 2026-10-2319:23First public proof of conceptPoC-in-GitHub
- 2026-10-2319:23EPSS crossed 10 %FIRST EPSS
Observed activity
isMalicious corpus · updated 2026-10-23 21:37 UTCBlock these indicators
- Firewall list (EDL, text): https://api.ismalicious.com/edl/cve/CVE-2018-7750?format=txt
- CSV export: https://api.ismalicious.com/edl/cve/CVE-2018-7750?format=csv
- TAXII collection of exploited CVEs
- The EDL and CSV take an API key on the Pro plan.
Versions per branch
OSV · NVD| Branch | Affected | Fixed in | Source |
|---|---|---|---|
| 2.4 | ≥ 2.4.0, < 2.4.1 | 2.4.1 | OSV |
| 2.3 | ≥ 2.3.0, < 2.3.2 | 2.3.2 | NVD · OSV |
| 2.2 | ≥ 2.2.0, < 2.2.3 | 2.2.3 | NVD · OSV |
| 2.1 | ≥ 2.1.0, < 2.1.5 | 2.1.5 | NVD · OSV |
| 2.0 | ≥ 2.0.0, < 2.0.8 | 2.0.8 | NVD · OSV |
| 1.18 | ≥ 1.18.0, < 1.18.5 | 1.18.5 | NVD · OSV |
| 1.17 | < 1.17.6 | 1.17.6 | NVD · OSV |
| 2.4 | = 2.4.0 | no fix published | NVD |
| Branch | Affected | Fixed in | Source |
|---|---|---|---|
| 6.4 | = 6.4 | no fix published | NVD |
| 6.5 | = 6.5 | no fix published | NVD |
| 6.6 | = 6.6 | no fix published | NVD |
| Branch | Affected | Fixed in | Source |
|---|---|---|---|
| 8.0 | = 8.0 | no fix published | NVD |
| 9.0 | = 9.0 | no fix published | NVD |
8 more products in the sources.
as publishedRanges as NVD and OSV publish them; a distribution’s build can be fixed under an older number.
Fix
- Update Paramiko to 2.4.1 · 2.3.2 · 2.2.3 · 2.1.5 · 2.0.8 · 1.18.5 · 1.17.6
Advisories and patches
- github.comPatch
Detection
read 2026-10-23 19:23 UTC- Nuclei template
- none so far ProjectDiscovery
- Exploit-DB
- no entry Exploit-DB
- Proof-of-concept repositories
- 2 repositories, unverifiedjm33-m0/CVE-2018-7750tlavi00/CVE-2018-7750 PoC-in-GitHub
Sources
- NVDCVSS 3.19.8read 2026-10-23
- NVDCVSS 2.07.5read 2026-10-23
- NVDweakness (CWE)CWE-287read 2026-10-23
- FIRST EPSSEPSS score27.1 %read 2026-10-23
- PoC-in-GitHubproof of concept2read 2026-10-23
- OSVaffected packages—
Technical details
- CVSS v3 Vector
- CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
- Published
- 2018-03-13
- Last Modified
- 2026-06-17
- NVD status
- Modified
Frequently asked questions
What is CVE-2018-7750?
Is CVE-2018-7750 actively exploited?
What is the CVSS score for CVE-2018-7750?
Running paramiko? Hear about its next vulnerability
Surveillance reads the versions in your stack — a domain, a lockfile or a list — checks each CVE against the ranges its sources publish, and alerts you when one you run is exploited or enters CISA KEV. A version it cannot read stays « version not verified ».
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Go further
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Related vulnerabilities
Same product first, then the same vendor advisory and the same publication week.