CVE-2017-17969

p7zip: heap-based buffer overflow in 7zip/Compress/ShrinkDecoder.cpp can allow an attacker to write arbitrary data and cause a crash

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Severity

Important

Red Hat Product Security

9.1

CVSS 3.0

Review impact separately from score.

Published · January 25, 2018

Updated · November 21, 2025

Description

Heap-based buffer overflow in the NCompress::NShrink::CDecoder::CodeReal method in 7-Zip before 18.00 and p7zip allows remote attackers to cause a denial of service (out-of-bounds write) or potentially execute arbitrary code via a crafted ZIP archive.

CVSS score applicability

The CVSS score(s) listed for this vulnerability do not reflect the associated product's status, and are included for informational purposes to better understand the severity of this vulnerability.

Mitigation

No mitigation is specified in collected source.

CVSS / CWE

CVSS 3.0 · 9.1
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:H

CWE-122 · Heap-based Buffer Overflow