CVE-2017-14023

An Improper Input Validation issue was discovered in Siemens SIMATIC PCS 7 V8.1 prior to V8.1 SP1 with WinCC V7.3 Upd 13, and V8.2 all versions. The improper input validation vulnerability has been identified, which may allow an authenticated remote attacker who is a member of the administrators group to crash services by sending specially crafted messages to the DCOM interface.

Published: 2017-11-06 Last update: 2026-05-13 Assigner: [email protected] Source: [email protected]
NVD Status：Modified，CVE State: published
View at NVD, CVE.org, EUVD

CVE-2017-14023 is rated Moderate Risk (51.3/100): CVSS Medium severity, with medium exploitation likelihood (EPSS 3.67%). 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-2017-14023

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 2.83% 3.67% +0.85%
2 2025-03-30 3.41% 2.83% -0.58%
3 2025-03-29 — 3.41% —

Full EPSS history (8 records total)

Common vulnerability scoring system (CVSS) metrics for CVE-2017-14023

CVSS metrics for this CVE.

Base score Version Severity Vector Exploitability Impact Score source
4.9 3.1 MEDIUM
CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:H Click to expand
Attack vector (AV:N)
Could be attacked over the internet or any normal routed network—not just someone sitting at the machine.
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:H)
They need powerful rights—admin, root, or similar—before this pays off.
User interaction (UI:N)
Nobody has to click “OK” or open a trap file; it can work without a victim helping.
Scope (S:U)
Damage stays in the same “trust bubble” as the broken component—no big spill into unrelated systems.
Confidentiality (C:N)
Doesn’t really leak secrets in a meaningful way.
Integrity (I:N)
Data isn’t meaningfully altered or forged.
Availability (A:H)
Could take the service down hard or make it unusable for people who depend on it.
 1.2 3.6 [email protected]
4.0 2.0 MEDIUM
AV:N/AC:L/Au:S/C:N/I:N/A:P Click to expand
Access vector (AV:N)
Can be exploited remotely over network reachability.
Access complexity (AC:L)
Exploitation conditions are straightforward and predictable.
Authentication (AU:S)
A single authentication is required.
Confidentiality impact (C:N)
No confidentiality impact.
Integrity impact (I:N)
No integrity impact.
Availability impact (A:P)
Partial availability impact.
 8.0 2.9 [email protected]

Weakness enumeration for CVE-2017-14023

Affected software / configurations for CVE-2017-14023

Vendor Product Version Raw CPE
siemens simatic_pcs7 8.1 cpe:2.3:a:siemens:simatic_pcs7:8.1:-:*:*:*:*:*:*
siemens simatic_wincc 7.3 cpe:2.3:a:siemens:simatic_wincc:7.3:update13:*:*:*:*:*:*
siemens simatic_pcs7 8.2 cpe:2.3:a:siemens:simatic_pcs7:8.2:-:*:*:*:*:*:*

References for CVE-2017-14023

URL Tags
http://www.securityfocus.com/bid/101680 Third Party Advisory VDB Entry
http://www.securitytracker.com/id/1039729 Third Party Advisory VDB Entry
https://ics-cert.us-cert.gov/advisories/ICSA-17-306-01 Third Party Advisory US Government Resource
cvelogic Threat Intelligence