It was discovered that QtPass before 1.2.1, when using the built-in password generator, generates possibly predictable and enumerable passw…

published 2018-01-05 8 y ago modified 2026-06-17 4 mo ago also EUVD-2017-9161

cvss: 9.8; version 3.0, NVD
cisa kev: Not listed; not in CISA's catalog
epss: 2.4%; EPSS 2.4% chance of exploitation in 30 days, percentile 83%
public exploits: 0; none known

It was discovered that QtPass before 1.2.1, when using the built-in password generator, generates possibly predictable and enumerable passwords. This only applies to the QtPass GUI.

Patch / fix

fixed in 1 distros 2 links 2

qtpass qtpass 1.2.1

debian arch linux

qtpass Debian 14, Debian 13, Debian 12 1.2.1-1

debian advisories DEBIAN-CVE-2017-18021

qtpass Arch Linux 1.2.1-1

arch linux advisories AVG-576

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-2017-18021 updated 2026-01-09 cvss 9.8

qtpass: predictable random password generation

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

2.36% chance of exploitation in the next 30 days, higher than 83% of all scored CVEs (FIRST EPSS, 2026-11-08).

Exploits and checks

github.com https://github.com/IJHack/QtPass/issues/338 referenced PoC, tagged "exploit" by a source, unverified

CVSS scores

assigned by	version	score	vector
NVD	3.0	9.8	CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
NVD	2.0	5.0	AV:N/AC:L/Au:N/C:P/I:N/A:N

Classification

Weakness

CWE-338 Use of Cryptographically Weak Pseudo-Random Number Generator (PRNG)

References

lists.zx2c4.com /pipermail/password-store/2018-January/003165.html
patch, third-party-advisory
github.com /IJHack/QtPass/issues/338
exploit, third-party-advisory
qtpass.org /
vendor-advisory
github.com /IJHack/QtPass/releases/tag/v1.2.1
release-notes, third-party-advisory

Sources

CVE List CVE-2017-18021
NVD CVE-2017-18021

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.

Summary