CVE-2021-37195

lowpriority · track · 24EPSS 0.005 · 43 %ileDEEUUS

grimoire priorityP3 · Track

Exploitable?

—

no known exploitation

Likely / severe?

0.51% (43rd) EPSS

CVSS 2.6 · low

Is it mine?

15 products

Check your exposure

Who says so?

5 sources

cnnvd · enisa_euvd · cisa_csaf_ot · nvd

EPSS · scored 2026-10-27

A vulnerability has been identified in COMOS V10.2 (All versions only if web components are used), COMOS V10.3 (All versions < V10.3.3.3 only if web components are used), COMOS V10.4 (All versions < V10.4.1 only if web components are used). The COMOS Web component of COMOS accepts arbitrary code as attachment to tasks. This could allow an attacker to inject malicious code that is executed when loading the attachment.

remediations

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

A vendor fix is available.

FixedCOMOS V10.3siemens_psirt
Update to V10.3.3.3 or later version
https://support.industry.siemens.com/cs/ww/en/view/109808862/
FixedCOMOS V10.4siemens_psirt
Update to V10.4.1 or later version
https://support.industry.siemens.com/cs/ww/en/view/109805632/
FixedCOMOS V10.3cisa_csaf_ot
Update to V10.3.3.3 or later version
https://support.industry.siemens.com/cs/ww/en/view/109808862/
FixedCOMOS V10.4cisa_csaf_ot
Update to V10.4.1 or later version
https://support.industry.siemens.com/cs/ww/en/view/109805632/
MitigationCOMOS V10.2siemens_psirt
CVE-2021-37196 can be mitigated in all versions by making the root directory of the web server read only
MitigationCOMOS V10.3siemens_psirt
CVE-2021-37196 can be mitigated in all versions by making the root directory of the web server read only
MitigationCOMOS V10.4siemens_psirt
CVE-2021-37196 can be mitigated in all versions by making the root directory of the web server read only
MitigationCOMOS V10.2cisa_csaf_ot
CVE-2021-37196 can be mitigated in all versions by making the root directory of the web server read only
MitigationCOMOS V10.3cisa_csaf_ot
CVE-2021-37196 can be mitigated in all versions by making the root directory of the web server read only
MitigationCOMOS V10.4cisa_csaf_ot
CVE-2021-37196 can be mitigated in all versions by making the root directory of the web server read only
No fix plannedCOMOS V10.2siemens_psirt
Currently no fix is planned
No fix plannedCOMOS V10.2cisa_csaf_ot
Currently no fix is planned

cvss

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

7.7

010

base score 0–10 · higher = more severe · hover a vector to decode⚠ sources disagree · low–high · 2.6–7.7

v2.02.6lowAV:N/AC:H/Au:N/C:N/I:P/A:Nprimary · NVD / NIST USexploitability 4.9 · impact 2.9

v3.16.1mediumCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:Nprimary · NVD / NIST USexploitability 2.8 · impact 2.7

v3.17.7highCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:N/I:H/A:N/E:P/RL:O/RC:Csecondary · CISA US

v3.17.7highCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:N/I:H/A:N/E:P/RL:O/RC:Csecondary · Siemens ProductCERT DE

v3.15.6mediumCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N/E:Usecondary · CVSS-BT (t0sche)

weaknesses

The CWE weakness classes this flaw belongs to.

CWE-79USprimaryCWE-80USCWE-80USCWE-80US

affected products (15)

Products and version ranges known to be affected.

COMOS V10.2all versionscisa_csaf_otUS
COMOS V10.3all versionscisa_csaf_otUS
COMOS V10.4all versionscisa_csaf_otUS
Siemens COMOS V10.2≤ All_versions_only_if_web_components_are_usedcisa_csaf_otUS
Siemens COMOS V10.3< V10.3.3.3_only_if_web_components_are_usedcisa_csaf_otUS
Siemens COMOS V10.4< V10.4.1_only_if_web_components_are_usedcisa_csaf_otUS
Siemens COMOS V10.2≤ All versions only if web components are usedenisa_euvdEU
Siemens COMOS V10.3All versions → V10.3.3.3 only if web components are usedenisa_euvdEU
Siemens COMOS V10.4All versions → V10.4.1 only if web components are usedenisa_euvdEU
siemens comos≤ 10.2nvdUScpe:2.3:a:siemens:comos:*:*:*:*:*:*:*:*
siemens comos10.3 → 10.3.3.2.14nvdUScpe:2.3:a:siemens:comos:*:*:*:*:*:*:*:*
siemens comos= 4.1nvdUScpe:2.3:a:siemens:comos:*:*:*:*:*:*:*:*
Siemens COMOS V10.2≤ All versions only if web components are usedsiemens_psirtDE
Siemens COMOS V10.3< V10.3.3.3 only if web components are usedsiemens_psirtDE
Siemens COMOS V10.4< V10.4.1 only if web components are usedsiemens_psirtDE

advisories (2)

Vendor and ecosystem advisories describing this.

SSA-995338SSA-995338: Multiple Vulnerabilities in COMOS Web2022-01-11csaf · siemens_psirtDE
Multiple vulnerabilities were identified in the web components of COMOS that could allow an attacker to conduct code injections, store data in undesired locations, execute arbitrary SQL statements, and run cross-site request forgery attacks. Siemens has released updates for several affected products and recommends to update to the latest versions. Siemens recommends specific countermeasures for products where updates are not, or not yet available.
ICSA-22-013-05Siemens COMOS Web (Update A)2022-01-11icsa · cisa_csaf_otUS
Multiple vulnerabilities were identified in the web components of COMOS that could allow an attacker to conduct code injections, store data in undesired locations, execute arbitrary SQL statements, and run cross-site request forgery attacks. Siemens has released updates for several affected products and recommends to update to the latest versions. Siemens recommends specific countermeasures for products where updates are not, or not yet available.

also known as (3)

Other names and identifiers for this entity.

sources

Which sources assert this record, and when.

cnnvd enisa_euvd cisa_csaf_ot nvd siemens_psirt NVD CVE.org MITRE

published 2022-01-11modified 2026-06-17

related (53,008)

Related entries.

ID	severity	EPSS	exploitable	published
CVE-2026-42897US	medium6.1OT critical	70.7% (99th)	KEV	2026-05-14
Improper neutralization of input during web page generation ('cross-site scripting') in Microsoft Exchange Server allows an unauthorized attacker to perform spoofing over a network…
CVE-2025-66376US	medium6.1OT critical	20.2% (97th)	KEV	2026-01-05
Zimbra Collaboration (ZCS) 10 before 10.0.18 and 10.1 before 10.1.13 allows Classic UI stored XSS via Cascading Style Sheets (CSS) @import directives in an HTML e-mail message.
CVE-2025-68461US	medium6.1OT critical	27.4% (98th)	KEV	2025-12-18
Roundcube Webmail before 1.5.12 and 1.6 before 1.6.12 is prone to a Cross-Site-Scripting (XSS) vulnerability via the animate tag in an SVG document.
CVE-2025-48700US	—OT critical	1.71% (77th)	KEV	2025-06-23
An issue was discovered in Zimbra Collaboration (ZCS) 8.8.15 and 9.0 and 10.0 and 10.1. A Cross-Site Scripting (XSS) vulnerability in the Zimbra Classic UI allows attackers to exec…
CVE-2025-27915US	—OT critical	4.06% (91st)	KEV	2025-03-12
An issue was discovered in Zimbra Collaboration (ZCS) 9.0 and 10.0 and 10.1. A stored cross-site scripting (XSS) vulnerability exists in the Classic Web Client due to insufficient…

+53003 more

references (7)

External citations — patches, advisories, analysis.

scry

Attackers weaponise vulnerabilities like this against internet-exposed services. See what is exposed on your perimeter with a free passive scan.

Free scan