What is CVE-2017-9433?

CVE-2017-9433 is a critical-severity vulnerability in Libmwaw Project, classified under Improper Restriction of Operations within the Bounds of a Memory Buffer. CVSS score: 9.8/10. Published 2017-06-05.

How severe is CVE-2017-9433?

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

Buffer overflow in Libmwaw Project

CVE-2017-9433

Document Liberation Project libmwaw before 2017-04-08 has an out-of-bounds write caused by a heap-based buffer overflow related to the MsWrd1Parser::readFootnoteCorrespondance function in lib/MsWrd1Parser.cxx.

Vulnerability class: Buffer Overflow

Published 2017-06-05 · 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: 0.023 (82.5th percentile), scored 2026-10-06.

Low probability of exploitation in the next 30 days, but still tracked. 83rd percentile — 82.5% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.023 · newest: 0.023 · change: 0.000

Affected products

Libmwaw Project

Weakness classification (CWE)

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

References

sourceforge.net/p/libmwaw/libmwaw/ci/68b3b74569881248bfb6cbb4266177cc253b292f/ (Patch, Third Party Advisory)
bugs.chromium.org/p/oss-fuzz/issues/detail (VDB Entry, Third Party Advisory, Issue Tracking)
www.debian.org/security/2017/dsa-3875 (vendor-advisory)

Frequently asked questions

What is CVE-2017-9433?: CVE-2017-9433 is a critical-severity vulnerability in Libmwaw Project, classified under Improper Restriction of Operations within the Bounds of a Memory Buffer. CVSS score: 9.8/10. Published 2017-06-05.
How severe is CVE-2017-9433?: Critical severity. CVSS v3 base score is 9.8 out of 10.