A vulnerability has been identified in PCS neo (Administration Console) (All versions < V3.1), TIA Portal (V15, V15.1 and V16).

published 2021-02-09 5 y ago modified 2026-06-17 4 mo ago also EUVD-2020-17928

cvss: 7.8; version 3.1, NVD
cisa kev: Not listed; not in CISA's catalog
epss: 0.9%; EPSS 0.9% chance of exploitation in 30 days, percentile 59%
public exploits: 0; none known

A vulnerability has been identified in PCS neo (Administration Console) (All versions < V3.1), TIA Portal (V15, V15.1 and V16). Manipulating certain files in specific folders could allow a local attacker to execute code with SYSTEM privileges. The security vulnerability could be exploited by an attacker with a valid account and limited access rights on the system.

Patch / fix

fixed in 1

siemens simatic_process_control_system_neo 3.1

Vendor advisories

What the vendors themselves say about their products: affected, fixed or not affected, and what to do.

cisa ICSA-21-040-05 updated 2025-05-06 cvss 7.8

Siemens TIA Administrator (Update A)

Siemens PCS neo (Administration Console) <V3.1
affected: fixed in V3.1, mitigation
Siemens TIA Portal 15, 15.1, 16
affected: fixed in V1.0, mitigation support.industry.siemens.com

Facts from CISA's republication of the vendor's own advisory (CSAF); the linked advisory is the authoritative source. CISA notification · csaf

Exploit prediction

0.90% chance of exploitation in the next 30 days, higher than 59% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by	version	score	vector
NVD	3.1	7.8	CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
NVD	2.0	7.2	AV:L/AC:L/Au:N/C:C/I:C/A:C

Affected products

Siemens PCS neo (Administration Console)
Siemens TIA Portal

Classification

Weakness

CWE-284 Improper Access Control
CWE-427 Uncontrolled Search Path Element

References

cert-portal.siemens.com /productcert/pdf/ssa-428051.pdf
vendor-advisory
kb.cert.org /vuls/id/466044
third-party-advisory, us-government-resource
us-cert.cisa.gov /ics/advisories/icsa-21-040-05
third-party-advisory, us-government-resource, vdb-entry

Sources

CVE List CVE-2020-25238
NVD CVE-2020-25238

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.

Summary