A vulnerability has been identified in SIPORT MP (All versions < 3.2.1).

published 2020-10-15 6 y ago modified 2026-06-17 4 mo ago also EUVD-2020-28716

cvss: 8.8; version 3.1, NVD
cisa kev: Not listed; not in CISA's catalog
epss: 1.5%; EPSS 1.5% chance of exploitation in 30 days, percentile 74%
public exploits: 0; none known

A vulnerability has been identified in SIPORT MP (All versions < 3.2.1). Vulnerable versions of the device could allow an authenticated attacker to impersonate other users of the system and perform (potentially administrative) actions on behalf of those users if the single sign-on feature ("Allow logon without password") is enabled.

Patch / fix

fixed in 1

siemens siport_mp 3.2.1

Vendor advisories

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

cisa ICSA-20-287-06 updated 2020-10-13 cvss 8.8

Siemens SIPORT MP

Siemens SIPORT MP <3.2.1
affected: fixed in 3.2.1, 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

1.48% chance of exploitation in the next 30 days, higher than 74% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by	version	score	vector
NVD	3.1	8.8	CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
NVD	2.0	8.5	AV:N/AC:M/Au:S/C:C/I:C/A:C

Affected products

Siemens SIPORT MP

Classification

Weakness

CWE-603 Use of Client-Side Authentication
CWE-287 Improper Authentication

References

cert-portal.siemens.com /productcert/pdf/ssa-384879.pdf
vendor-advisory
us-cert.cisa.gov /ics/advisories/icsa-20-287-06
third-party-advisory, us-government-resource

Sources

CVE List CVE-2020-7591
NVD CVE-2020-7591

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