CVE-2025-30174: A vulnerability has been identified in SIMATIC PCS neo V4.1 (All versions), SIMATIC PCS neo V5.0 (All versions

Q: How do I fix CVE-2025-30174?

sinec nms: upgrade to 4.0; sinema remote connect: mitigate or apply the listed mitigation; totally integrated automation portal: downgrade or apply the listed mitigation. Exact commands for each OS are on this page.

Q: Is CVE-2025-30174 being exploited?

CVE-2025-30174 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

Q: What does CVE-2025-30174 affect?

CVE-2025-30174 affects sinec nms, sinema remote connect, totally integrated automation portal. Severity is high (CVSS 7.5). A vulnerability has been identified in SIMATIC PCS neo V4.1 (All versions), SIMATIC PCS neo V5.0 (All versions), SINEC NMS (All versions < V4.0), SINEMA Remote Connect (All versions), Totally Integrated Automation Portal (TIA Portal) V17 (A

Q: How urgent is CVE-2025-30174?

Priority 44/100. High severity; Remotely exploitable, no login, no user action

This month

HIGH 7.5REMOTEUPGRADEMITIGATEDOWNGRADE

CVE-2025-30174 is a high-severity flaw (CVSS 7.5) affecting sinec nms, sinema remote connect, totally integrated automation portal. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

A vulnerability has been identified in SIMATIC PCS neo V4.1 (All versions), SIMATIC PCS neo V5.0 (All versions), SINEC NMS (All versions < V4.0), SINEMA Remote Connect (All versions), Totally Integrated Automation Portal (TIA Portal) V17 (All versions), Totally Integrated Automation Portal (TIA Portal) V18 (All versions), Totally Integrated Automation Portal (TIA Portal) V19 (All versions), Totally Integrated Automation Portal (TIA Portal) V20 (A

Why this priority

High severity
Remotely exploitable, no login, no user action

A fixed release or distro patch exists.

Risk facts

CVSS score	7.5 (High)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	None
User interaction	None
EPSS exploit chance	0.7% (top 49%)
CISA exploited list	No
Weakness	CWE-125
Published	2025-05-13
Last modified	2026-06-17

Publisher (CNA): Siemens AG · Vendor: siemens

Last updated 2026-06-17 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2025-05-13 10:15 UTCPublished CVE record published
2026-06-17 09:08 UTCUpdated Record last modified

siemens sinec nms UPGRADE

Affected: < 4.0

Fixed in: 4.0

Safe to downgrade to: no unaffected older release

1. Check installed version

apt-cache policy sinec-nms || rpm -q sinec-nms || sinec-nms --version

2. UPGRADE to 4.0 (Debian / Ubuntu)

sudo apt update && sudo apt install --only-upgrade sinec-nms

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade sinec-nms

Note

Distros often backport fixes without changing the version number. Confirm with the distro advisory or changelog.

siemens sinema remote connect MITIGATE

Affected: all versions

Fixed in: no fixed release known

Safe to downgrade to: no unaffected older release

1. Check installed version

apt-cache policy sinema-remote-connect || rpm -q sinema-remote-connect || sinema-remote-connect --version

No fixed or unaffected release known

Apply the vendor mitigation from the advisory, disable the affected feature, or restrict network access.

siemens totally integrated automation portal DOWNGRADE

Affected: 17 · 18 · 19 · 20

Fixed in: no fixed release known

Safe to downgrade to: a release before 17

1. Check installed version

apt-cache policy totally-integrated-automation-portal || rpm -q totally-integrated-automation-portal || totally-integrated-automation-portal --version

2. No fixed release: DOWNGRADE to a release before 17 (Debian / Ubuntu)

apt-cache madison totally-integrated-automation-portal sudo apt install totally-integrated-automation-portal=<VERSION_BEFORE_17> sudo apt-mark hold totally-integrated-automation-portal

2. No fixed release: DOWNGRADE (RHEL / Amazon Linux / Fedora)

dnf --showduplicates list totally-integrated-automation-portal sudo dnf downgrade totally-integrated-automation-portal-<VERSION_BEFORE_17> sudo dnf versionlock add totally-integrated-automation-portal

Downgrade risk

Downgrading can break dependent software and may reopen older bugs. Read the distro advisory first and test on a non-production host.

After downgrade

Restart the service, and keep the package held until a fixed release ships.

siemens user management component UPGRADE

Affected: < 2.15.1.1

Fixed in: 2.15.1.1

Safe to downgrade to: no unaffected older release

1. Check installed version

apt-cache policy user-management-component || rpm -q user-management-component || user-management-component --version

2. UPGRADE to 2.15.1.1 (Debian / Ubuntu)

sudo apt update && sudo apt install --only-upgrade user-management-component

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade user-management-component

Note

Distros often backport fixes without changing the version number. Confirm with the distro advisory or changelog.

Verify at the official source NVD · CVE Program · Report a problem with this page
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.

Quick answers

How do I fix CVE-2025-30174?

sinec nms: upgrade to 4.0; sinema remote connect: mitigate or apply the listed mitigation; totally integrated automation portal: downgrade or apply the listed mitigation. Exact commands for each OS are on this page.

Is CVE-2025-30174 being exploited?

CVE-2025-30174 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

What does CVE-2025-30174 affect?

CVE-2025-30174 affects sinec nms, sinema remote connect, totally integrated automation portal. Severity is high (CVSS 7.5). A vulnerability has been identified in SIMATIC PCS neo V4.1 (All versions), SIMATIC PCS neo V5.0 (All versions), SINEC NMS (All versions < V4.0), SINEMA Remote Connect (All versions), Totally Integrated Automation Portal (TIA Portal) V17 (A

How urgent is CVE-2025-30174?

Priority 44/100. High severity; Remotely exploitable, no login, no user action

Software pages

Siemens vulnerabilities

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References

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