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Fencer Vulns
critical 9.8

CVE-2020-9355 json

danfruehauf NetworkManager-ssh before 1.2.11 allows privilege escalation because extra options are mishandled.

published 2020-02-23 6 y ago modified 2026-06-17 4 mo ago also EUVD-2020-30176

cvss
9.8
version 3.1, NVD
cisa kev
Not listed
not in CISA's catalog
epss
2.2%
EPSS 2.2% chance of exploitation in 30 days, percentile 82%
public exploits
0
none known

Summary

danfruehauf NetworkManager-ssh before 1.2.11 allows privilege escalation because extra options are mishandled.

Patch / fix

  • networkmanager-ssh_project networkmanager-ssh 1.2.11
  • network-manager-ssh Debian 14, Debian 13, Debian 12 1.2.11-1

debian advisories DEBIAN-CVE-2020-9355

Vendor advisories

What the vendors themselves say about their products: affected, fixed or not affected, and what to do.

red hat product security vex CVE-2020-9355 updated cvss 9.8

networkmanager-ssh: privilege escalation via extra mishandled options

  • Red Hat All currently supported Red Hat products
    not affected: vulnerable code not present

Red Hat CSAF VEX © Red Hat, Inc., from https://security.access.redhat.com/data/csaf/v2/vex/; changed: reduced to product statuses and remediations. CC BY 4.0 · csaf

Exploit prediction

2.22% chance of exploitation in the next 30 days, higher than 82% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by version score vector
NVD 3.1 9.8 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
NVD 2.0 7.5 AV:N/AC:L/Au:N/C:P/I:P/A:P

References

Sources

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.