CVE-2021-33726 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-2021-20403
- cvss
- 7.5
- version 3.1, NVD
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 1.2%
- EPSS 1.2% chance of exploitation in 30 days, percentile 68%
- public exploits
- 0
- none known
Summary
A vulnerability has been identified in SINEC NMS (All versions < V1.0 SP2 Update 1). The affected system allows to download arbitrary files under a user controlled path and does not correctly check if the relative path is still within the intended target directory.
Patch / fix
Vendor advisories
What the vendors themselves say about their products: affected, fixed or not affected, and what to do.
cisa ICSA-21-287-05 updated cvss 6.5
Siemens SINEC NMS
-
Siemens SINEC NMS <V1.0_SP2_Update_1affected: fixed in V1.0, 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
1.21% chance of exploitation in the next 30 days, higher than 68% of all scored CVEs (FIRST EPSS, 2026-11-08).
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| NVD | 3.1 | 7.5 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N |
| NVD | 2.0 | 5.0 | AV:N/AC:L/Au:N/C:P/I:N/A:N |
Affected products
- Siemens SINEC NMS
Classification
- Weakness
-
- CWE-22 Improper Limitation of a Pathname to a Restricted Directory
References
-
cert-portal.siemens.com
/productcert/pdf/ssa-163251.pdf
patch, vendor-advisory
Sources
- CVE List CVE-2021-33726
- NVD CVE-2021-33726
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