Skip to content
Fencer Vulns
medium 6.5

CVE-2021-37196 json

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 on…

published 2022-01-11 4 y ago modified 2026-06-17 4 mo ago also EUVD-2021-23770

cvss
6.5
version 3.1, NVD
cisa kev
Not listed
not in CISA's catalog
epss
0.8%
EPSS 0.8% chance of exploitation in 30 days, percentile 57%
public exploits
0
none known

Summary

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 V10.3 (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 unpacks specially crafted archive files to relative paths. This vulnerability could allow an attacker to store files in any folder accessible by the COMOS Web webservice.

Patch / fix

  • siemens comos 10.3.3.3

Vendor advisories

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

cisa ICSA-22-013-05 updated cvss 6.5

Siemens COMOS Web (Update A)

  • Siemens COMOS V10.2 All_versions_only_if_web_components_are_used
    affected: mitigation, no fix planned
  • Siemens COMOS V10.3 <V10.3.3.3_only_if_web_components_are_used, >=V10.3.3.3_only_if_web_components_are_used
    affected: fixed in V10.3.3.3, mitigation, no fix planned support.industry.siemens.com
  • Siemens COMOS V10.4 <V10.4.1_only_if_web_components_are_used
    affected: fixed in V10.4.1, 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

0.81% chance of exploitation in the next 30 days, higher than 57% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by version score vector
NVD 3.1 6.5 CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N
NVD 2.0 3.5 AV:N/AC:M/Au:S/C:N/I:P/A:N

Affected products

  • Siemens COMOS V10.2
  • Siemens COMOS V10.3
  • Siemens COMOS V10.4

Classification

Weakness
  • CWE-23 Relative Path Traversal
  • CWE-22 Improper Limitation of a Pathname to a Restricted Directory

References

Sources

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.