CVE-2017-17969

Exp

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.

Published: 2018-01-30 Last update: 2025-01-10 Assigner: [email protected] Source: [email protected]
NVD Status：Modified，CVE State: published
View at NVD, CVE.org, EUVD

CVE-2017-17969 is rated High Exploit Risk (81.3/100): CVSS High severity, with high exploitation likelihood (EPSS 5.03%, 91th percentile). 1 public exploit reference(s) are indexed (Exploit-DB). EPSS rose +3.21% over the last day, indicating growing attacker interest. Public exploits are available—assess exposure, apply mitigations, and prioritize patching.

Risk is dynamic; we continuously reassess and refresh what is shown on this page as upstream context changes.

Public exploit references (Exploit-DB) for CVE-2017-17969

EDB-ID Source Kind Published Link
— nvd_ref exploit_tag Exploit-DB ↗

Exploit prediction scoring system (EPSS) score for CVE-2017-17969

EPSS lead: Daily EPSS estimates relative likelihood of exploitation; percentile ranks this CVE among scored vulnerabilities (higher = more severe relative rank).

# Date Old EPSS score New EPSS score Delta (New - Old)
1 2026-06-15 1.82% 5.03% +3.21%
2 2026-05-30 2.53% 1.82% -0.71%
3 2026-03-27 — 2.53% —

Full EPSS history (15 records total)

Common vulnerability scoring system (CVSS) metrics for CVE-2017-17969

CVSS metrics for this CVE.

Base score Version Severity Vector Exploitability Impact Score source
7.8 3.0 HIGH
CVSS:3.0/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H Click to expand
Attack vector (AV:L)
They already need access on the box, or another person has to do something wrong; it’s not a remote drive-by.
Attack complexity (AC:L)
Once they can reach the bug, pulling it off is straightforward—no weird race conditions or rare setup.
Privileges required (PR:N)
No account or special rights needed—anonymous or random user is enough.
User interaction (UI:R)
A real person has to do something—click, install, enable—otherwise it doesn’t land.
Scope (S:U)
Damage stays in the same “trust bubble” as the broken component—no big spill into unrelated systems.
Confidentiality (C:H)
Serious risk that confidential data gets exposed in a big way.
Integrity (I:H)
They could widely tamper with or forge data—trust in the data is badly hurt.
Availability (A:H)
Could take the service down hard or make it unusable for people who depend on it.
 1.8 5.9 [email protected]
6.8 2.0 MEDIUM
AV:N/AC:M/Au:N/C:P/I:P/A:P Click to expand
Access vector (AV:N)
Can be exploited remotely over network reachability.
Access complexity (AC:M)
Exploitation needs some favorable conditions, but not exceptional ones.
Authentication (AU:N)
No authentication is required.
Confidentiality impact (C:P)
Partial confidentiality impact.
Integrity impact (I:P)
Partial integrity impact.
Availability impact (A:P)
Partial availability impact.
 8.6 6.4 [email protected]

Weakness enumeration for CVE-2017-17969

OS Trackers for CVE-2017-17969

vendor priority summary link
alpine — CVE-2017-17969: 1 source package rows (p7zip); 14 state rows across 5 repos (3.10-main, 3.11-main, 3.12-main, 3.17-main, edge-main); fixed 13, open 1. https://security.alpinelinux.org/vuln/CVE-2017-17969
debian not yet assigned CVE-2017-17969 not yet assigned priority: Debian including 1 source packages (p7zip), 3 status rows across 3 suites (bookworm, bullseye, trixie): resolved 3. https://security-tracker.debian.org/tracker/CVE-2017-17969
redhat high — https://access.redhat.com/security/cve/CVE-2017-17969
suse high CVE-2017-17969 severity important: SUSE including 20 source package names (p7zip, p7zip-16.02-11.3, …), 47 product×package rows across 39 product lines (SUSE CaaS Platform 4.0, SUSE Enterprise Storage 6, … (39 product lines)): Fixed 34, Known Not Affected 13. https://www.suse.com/security/cve/CVE-2017-17969/
ubuntu medium CVE-2017-17969 medium priority: Ubuntu including 1 source packages (p7zip), 6 status rows across 6 suites (artful, bionic, cosmic, trusty, upstream, xenial): released 3, not-affected 2, ignored 1. https://ubuntu.com/security/CVE-2017-17969

Affected software / configurations for CVE-2017-17969

Vendor Product Version Raw CPE
7-zip 7-zip < 18.00 cpe:2.3:a:7-zip:7-zip:*:*:*:*:*:*:*:*
7-zip p7zip < 18.0 cpe:2.3:a:7-zip:p7zip:*:*:*:*:*:*:*:*
debian debian_linux 7.0 cpe:2.3:o:debian:debian_linux:7.0:*:*:*:*:*:*:*
debian debian_linux 8.0 cpe:2.3:o:debian:debian_linux:8.0:*:*:*:*:*:*:*
debian debian_linux 9.0 cpe:2.3:o:debian:debian_linux:9.0:*:*:*:*:*:*:*

References for CVE-2017-17969

cvelogic Threat Intelligence