CVE-2021-31338

mediumpriority · track · 31EPSS 0.002 · 15 %ileDEEURUUS

grimoire priorityP3 · Track

Exploitable?

—

no known exploitation

Likely / severe?

0.24% (15th) EPSS

CVSS 4.6 · medium

Is it mine?

5 products

Check your exposure

Who says so?

5 sources

cnnvd · enisa_euvd · fstec_bdu · nvd

EPSS · scored 2026-10-27

A vulnerability has been identified in SINEMA Remote Connect Client (All versions < V3.0 SP1). Affected devices allow to modify configuration settings over an unauthenticated channel. This could allow a local attacker to escalate privileges and execute own code on the device.

remediations

Vendor fix, mitigation, or workaround guidance, as published by each source.

A vendor fix is available.

FixedSINEMA Remote Connect Clientsiemens_psirt
Update to V3.0 SP1 or later version
https://support.industry.siemens.com/cs/de/en/view/109793790/
MitigationSINEMA Remote Connect Clientsiemens_psirt
Do not access links from untrusted sources

cvss

Technical severity, 0–10. One row per scoring source.

7.8

010

base score 0–10 · higher = more severe · hover a vector to decode⚠ sources disagree · medium–high · 4.6–7.8

v2.04.6mediumAV:L/AC:L/Au:N/C:P/I:P/A:Pprimary · NVD / NIST USexploitability 3.9 · impact 6.4

v3.17.8highCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:Hprimary · NVD / NIST USexploitability 1.8 · impact 5.9

v3.17.8highAV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:Hsecondary · FSTEC (BDU) RU

v3.17.8highCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H/E:P/RL:O/RC:Csecondary · Siemens ProductCERT DE

v3.17.1highCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H/E:Usecondary · CVSS-BT (t0sche)

weaknesses

The CWE weakness classes this flaw belongs to.

CWE-15USCWE-15USCWE-15US

affected products (5)

Products and version ranges known to be affected.

Siemens SINEMA Remote Connect ClientAll versions → V3.0 SP1enisa_euvdEU
Siemens AG SINEMA Remote Connect≤ 3.0 SP1fstec_bduRU
siemens sinema remote connect< 3.0nvdUScpe:2.3:a:siemens:sinema_remote_connect:*:*:*:*:*:*:*:*
siemens sinema remote connect= 3.0nvdUScpe:2.3:a:siemens:sinema_remote_connect:*:*:*:*:*:*:*:*
Siemens SINEMA Remote Connect Client< V3.0 SP1siemens_psirtDE

advisories (1)

Vendor and ecosystem advisories describing this.

SSA-816035SSA-816035: Code Execution Vulnerability in SINEMA Remote Connect Client2021-08-19csaf · siemens_psirtDE
The latest update for SINEMA Remote Connect Client fixes a vulnerability that could allow a local attacker to escalate privileges or even allow remote code execution under certain circumstances. Siemens has released a firmware update for SINEMA Remote Connect Client and proposes mitigations if an update is not possible.

also known as (4)

Other names and identifiers for this entity.

sources

Which sources assert this record, and when.

cnnvd enisa_euvd fstec_bdu nvd siemens_psirt NVD CVE.org MITRE

published 2021-08-19modified 2026-06-17

references (4)

External citations — patches, advisories, analysis.

scry

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