What is CVE-2017-17946?

CVE-2017-17946 is a critical-severity vulnerability in Novosoft Handy Password, classified under Improper Restriction of Operations within the Bounds of a Memory Buffer. CVSS score: 9.8/10. Published 2018-01-10.

How severe is CVE-2017-17946?

Critical severity. CVSS v3 base score is 9.8 out of 10.

Buffer overflow in Novosoft Handy Password

CVE-2017-17946

A buffer overflow in Handy Password 4.9.3 allows remote attackers to execute arbitrary code via a long "Title name" field in "mail box" data that is mishandled in an "Open from mail box" action.

Vulnerability class: Buffer Overflow

Published 2018-01-10 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 9.8 (Critical). Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.

EPSS exploit prediction

EPSS: 0.028 (85.8th percentile), scored 2026-10-06.

Low probability of exploitation in the next 30 days, but still tracked. 86th percentile — 85.8% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.028 · newest: 0.028 · change: 0.000

Affected products

Novosoft Handy Password — versions 4.9.3

Weakness classification (CWE)

CWE-119 — Improper Restriction of Operations within the Bounds of a Memory Buffer

References

sidechannel.tempestsi.com/password-manager-flaw-allows-for-arbitrary-command-ex… (Third Party Advisory)
seclists.org/fulldisclosure/2018/Jan/22 (Mailing List, Third Party Advisory)

Frequently asked questions

What is CVE-2017-17946?: CVE-2017-17946 is a critical-severity vulnerability in Novosoft Handy Password, classified under Improper Restriction of Operations within the Bounds of a Memory Buffer. CVSS score: 9.8/10. Published 2018-01-10.
How severe is CVE-2017-17946?: Critical severity. CVSS v3 base score is 9.8 out of 10.