CVE-2017-9806

A vulnerability in the OpenOffice Writer DOC file parser before 4.1.4, and specifically in the WW8Fonts Constructor, allows attackers to craft malicious documents that cause denial of service (memory corruption and application crash) potentially resulting in arbitrary code execution.

Published: 2017-11-20 Last update: 2026-06-16 Assigner: [email protected] Source: [email protected]
NVD Status：Modified，CVE State: published
View at NVD, CVE.org, EUVD

CVE-2017-9806 is rated Moderate Risk (60.7/100): CVSS High severity, with medium exploitation likelihood (EPSS 1.82%). Review affected assets and schedule remediation.

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

Exploit prediction scoring system (EPSS) score for CVE-2017-9806

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 2026-04-15 1.35% 1.82% +0.47%
2 2026-01-11 1.82% 1.35% -0.47%
3 2025-03-30 — 1.82% —

Full EPSS history (9 records total)

Common vulnerability scoring system (CVSS) metrics for CVE-2017-9806

CVSS metrics for this CVE.

Base score Version Severity Vector Exploitability Impact Score source
7.8 3.1 HIGH
CVSS:3.1/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-2017-9806

OS Trackers for CVE-2017-9806

vendor priority summary link
debian not yet assigned CVE-2017-9806 not yet assigned priority: Debian including 1 source packages (libreoffice), 5 status rows across 5 suites (bookworm, bullseye, forky, sid, trixie): resolved 5. https://security-tracker.debian.org/tracker/CVE-2017-9806
redhat high — https://access.redhat.com/security/cve/CVE-2017-9806
ubuntu medium CVE-2017-9806 medium priority: Ubuntu including 1 source packages (libreoffice), 5 status rows across 5 suites (artful, trusty, upstream, xenial, zesty): not-affected 3, DNE 1, released 1. https://ubuntu.com/security/CVE-2017-9806

Affected software / configurations for CVE-2017-9806

Vendor Product Version Raw CPE
apache openoffice < 4.1.4 cpe:2.3:a:apache:openoffice:*:*:*:*:*:*:*:*

References for CVE-2017-9806

URL Tags
http://www.openoffice.org/security/cves/CVE-2017-9806.html Vendor Advisory
http://www.securityfocus.com/bid/101585 Broken Link Third Party Advisory VDB Entry
cvelogic Threat Intelligence