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Fencer Vulns
high 8.8

CVE-2021-33729 json

A vulnerability has been identified in SINEC NMS (All versions < V1.0 SP2 Update 1).

published 2021-10-12 5 y ago modified 2026-06-17 4 mo ago also EUVD-2021-20406

cvss
8.8
version 3.1, NVD
cisa kev
Not listed
not in CISA's catalog
epss
2.4%
EPSS 2.4% chance of exploitation in 30 days, percentile 84%
public exploits
0
none known

Summary

A vulnerability has been identified in SINEC NMS (All versions < V1.0 SP2 Update 1). An authenticated attacker that is able to import firmware containers to an affected system could execute arbitrary commands in the local database.

Patch / fix

  • siemens sinec_nms 1.0

Vendor advisories

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

Exploit prediction

2.38% chance of exploitation in the next 30 days, higher than 84% 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 6.5 AV:N/AC:L/Au:S/C:P/I:P/A:P

Affected products

  • Siemens SINEC NMS

Classification

Weakness
  • CWE-89 Improper Neutralization of Special Elements used in an SQL Command

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.