qtnx 0.9 stores non-custom SSH keys in a world-readable configuration file.

published 2019-11-15 6 y ago modified 2026-06-16 4 mo ago also EUVD-2011-2889

cvss: 5.5; version 3.1, NVD
cisa kev: Not listed; not in CISA's catalog
epss: 0.2%; EPSS 0.2% chance of exploitation in 30 days, percentile 16%
public exploits: 0; none known

qtnx 0.9 stores non-custom SSH keys in a world-readable configuration file. If a user has a world-readable or world-executable home directory, another local system user could obtain the private key used to connect to remote NX sessions.

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-2011-2916 updated 2025-11-21 cvss 1.9

freenx-client: qtnx stores configuration, including non-default authentication key, with insecure permissions

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

0.25% chance of exploitation in the next 30 days, higher than 16% of all scored CVEs (FIRST EPSS, 2026-11-09).

CVSS scores

assigned by	version	score	vector
NVD	3.1	5.5	CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N
NVD	2.0	2.1	AV:L/AC:L/Au:N/C:P/I:N/A:N

Affected products

qtnx qtnx

Classification

Weakness

CWE-312 Cleartext Storage of Sensitive Information

References

security-tracker.debian.org /tracker/CVE-2011-2916
third-party-advisory
bugzilla.redhat.com /show_bug.cgi?id=CVE-2011-2916
issue-tracking, third-party-advisory
access.redhat.com /security/cve/cve-2011-2916
broken-link

Sources

CVE List CVE-2011-2916
NVD CVE-2011-2916

Fencer Intel 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.

Summary