What is CVE-2021-33727?

CVE-2021-33727 is a medium-severity vulnerability in Siemens Sinec Nms, classified under Information Disclosure. CVSS score: 6.5/10. Published 2021-10-12.

How severe is CVE-2021-33727?

Medium severity. CVSS v3 base score is 6.5 out of 10.

Information disclosure in Siemens Sinec Nms

CVE-2021-33727

A vulnerability has been identified in SINEC NMS (All versions < V1.0 SP2 Update 1). An authenticated attacker could download the user profile of any user. With this, the attacker could leak confidential information of any user in the affected system.

Vulnerability class: Information Disclosure

Published 2021-10-12 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 6.5 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N.

EPSS exploit prediction

EPSS: 0.009 (56.9th percentile), scored 2026-10-07.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 57th percentile — 56.9% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.009 · newest: 0.009 · change: 0.000

Affected products

Siemens Sinec Nms — versions All versions < V1.0 SP2 Update 1
Siemens Sinec Nms — versions 1.0

Weakness classification (CWE)

CWE-200 — Information Disclosure

References

cert-portal.siemens.com/productcert/pdf/ssa-163251.pdf (Patch, Vendor Advisory)

Frequently asked questions

What is CVE-2021-33727?: CVE-2021-33727 is a medium-severity vulnerability in Siemens Sinec Nms, classified under Information Disclosure. CVSS score: 6.5/10. Published 2021-10-12.
How severe is CVE-2021-33727?: Medium severity. CVSS v3 base score is 6.5 out of 10.