A vulnerability has been identified in SINEC NMS (All versions < V1.0 SP2 Update 1)
Siemens · SINEC NMS
4.9MediumCVSS 3.1
Recommended action
Scheduled
Medium technical severity with no CISA KEV confirmation; remediate through the normal risk-based patch cycle unless local exposure raises the priority.
Patch available
Direct vendor intelligence
Authoritative vendor CSAF and VEX advisories
Structured product status and remediation from the issuing vendor. Product-state explanations are always visible; large lists can be searched or downloaded.
The vendor explicitly identifies these products as affected by this CVE.
SINEC NMS
Summary
The affected system has a Path Traversal vulnerability when exporting a firmware container. With this a privileged authenticated attacker could create arbitrary files on an affected system.
Remediation
Update to V1.0 SP2 Update 1 or later version
Optional official sources
National CERT insights ?CERT means Computer Emergency Response Team; CSIRT is the closely related term Computer Security Incident Response Team.
Select the national-authority views to include. The exact source language is shown on each matched advisory. Your choice is remembered on this device and encoded in the shareable URL.
Official European source
ENISA European Vulnerability Database
Official EUVD identifiers, advisory evidence and known-exploited context. Missing fields are not treated as evidence of low risk.
1 current
ENISA EUVD identifier
EUVD-2021-20399
No EUVD known-exploited evidence
ENISA has published the identifier mapping but no EUVD description has been stored yet.
EUVD state
Present in the current official mapping
Known exploitation
Not present in the current ENISA EUVD known-exploited dataset. This is not proof of no exploitation.
ENISA score
Not supplied in the stored EUVD record
Advisory evidence
No linked advisory details stored yet
Recommended actionScheduled
Medium technical severity with no CISA KEV confirmation; remediate through the normal risk-based patch cycle unless local exposure raises the priority.
Patch available
01
What, why and how
A vulnerability has been identified in SINEC NMS (All versions < V1.0 SP2 Update 1). The affected system has a Path Traversal vulnerability when exporting a firmware container. With this a privileged authenticated attacker could create arbitrary files on an affected system.
What
A vulnerability has been identified in SINEC NMS (All versions < V1.0 SP2 Update 1). The affected system has a Path Traversal vulnerability when exporting a firmware container. With this a privileged authenticated attacker could create arbitrary files on an affected system.
Why
Attacker-controlled path data is not constrained to the intended directory before the application accesses a file.
How
An attacker operating through a network path may attempt exploitation with elevated privileges. If successful, the issue may cause the confidentiality, integrity or availability impact described by the vendor.
What
A vulnerability has been identified in SINEC NMS (All versions < V1.0 SP2 Update 1). The affected system has a Path Traversal vulnerability when exporting a firmware container. With this a privileged authenticated attacker could create arbitrary files on an affected system.
Why
Attacker-controlled path data is not constrained to the intended directory before the application accesses a file.
How
An attacker operating through a network path may attempt exploitation with elevated privileges. If successful, the issue may cause the confidentiality, integrity or availability impact described by the vendor.
02
Exploit reality and attack path
CVSS severity, EPSS forecast probability, public exploit material and CISA-confirmed exploitation are separate signals.
Observed exploitation ?Confirmed exploitation and public exploit material are separate signals. Attacks can occur without public proof-of-concept or exploit code.No confirmed evidence
No CISA KEV match was present at the last successful refresh. This means no confirmation from that source, not proof of no exploitation.
Public PoC / exploit material ?Confirmed exploitation and public exploit material are separate signals. Attacks can occur without public proof-of-concept or exploit code.None recorded
No exploit-tagged reference or CISA SSVC proof-of-concept state is currently recorded. Research may still exist outside the structured feeds.
Likely attack path
a network path → Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal') → cause the confidentiality, integrity or availability impact described by the vendor
Attack surface
Network
Privileges required
High: elevated access is required
User interaction
None
Attack complexity
Low: no specialised conditions are recorded
Security boundary
Unchanged: impact remains within the vulnerable component's security authority
Weakness ?CWE means Common Weakness Enumeration: a standard category for the underlying weakness.
CWE-22: Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal'). The product uses external input to construct a pathname that is intended to identify a file or directory that is located underneath a restricted parent directory, but the product does not properly neutralize special elements within the pathname that can cause the pathname to resolve to a location that is outside of the restricted directory.
CVSS vector ?CVSS means Common Vulnerability Scoring System. The vector records the metric values used to calculate technical severity.
CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:H/A:N
Common Vulnerability Scoring System 3.1: the compact vector below is decoded into plain language.
AVNetworkAttack vector: The vulnerable component can be reached over a network.ACLowAttack complexity: No specialised conditions are required beyond attacker-controlled input.PRHighPrivileges required: The attacker needs elevated or administrative privileges.UINoneUser interaction: No action by another user is required.SUnchangedScope: The security impact remains within the vulnerable component's authority.CNoneConfidentiality impact: No direct loss is represented by this metric.IHighIntegrity impact: A successful attack can cause a major loss.ANoneAvailability impact: No direct loss is represented by this metric.
Post-exploitation / living off the land
No specific living-off-the-land technique is confirmed in the structured sources. Monitor normal administration tools for activity inconsistent with the affected service's baseline.
NetworkCWE-22
A
Official authority intelligence
Only matched European and national findings are included. Language selectors and unavailable sources are omitted.
ENISA EUVD · EUVD-2021-20399Official EUVD mapping
0 linked advisory records.
Official EUVD recordCERT-FR · French · CERTFR-2021-AVI-774Multiples vulnérabilités dans les produits Siemens
emens.com/productcert/pdf/ssa-173565.pdf
Bulletin de sécurité Siemens ssa-178380 du 12 octobre 2021
https://cert-portal.siemens.com/productcert/pdf/ssa-178380.pdf
Bulletin de sécurité Siemens ssa-280624 du 12 octobre 2021
https://cert-portal.siemens.com/productcert/pdf/ssa-280624.pdf
Bulletin de sécurité Siemens ssa-766247 du 12 octobre 2021
https://cert-portal.siemens.com/productcert/pdf/ssa-766247.pdf
Référence CVE CVE-2019-5318
https://www.cve.org/CVERecord?id=CVE-2019-5318
Référence CVE CVE-2020-37719
https://www.cve.org/CVERecord?id=CVE-2020-37719
Référence CVE CVE-2021-27395
https://www.cve.org/CVERecord?id=CVE-2021-27395
Référence CVE CVE-2021-33722
https://www.cve.org/CVERecord?id=CVE-2021-33722
Référence CVE CVE-2021-33723
https://www.cve.org/CVERecord?id=CVE-2021-33723
Référence CVE CVE-2021-33724
https://www.cve.org/CVERecord?id=CVE-2021-33724
Référence CVE CVE-2021-33725
https://www.cve.org/CVERecord?id=CVE-2021-33725
Référence CVE CVE-2021-33726
https://www.cve.org/CVERecord?id=CVE-2021-33726
Référence CVE CVE-2021-33727
https://www.cve.org/CVERecord?id=CVE-2021-33727
Référence CVE CVE-2021-33728
https://www.cve.org/CVERecord?id=CVE-2021-33728
Référence CVE CVE-2021-33729
https://www.cve.org/CVERecord?id=CVE-2021-33729
Référence CVE CVE-2021-33730
https://www.cve.org/CVERecord?id=
Operational remediation based on structured source evidence.
Status ?Patch availability is based on structured fixed-version fields and authoritative update references. If no fix is verified, check the vendor advisory before making a change.
Patch available
Affected
SINEC NMS
Fixed
An authoritative update reference is available, but the fixed version is not recorded in the structured CVE fields. Check the linked vendor advisory for the applicable release.
Action
Update to V1.0 SP2 Update 1 or later version
Workaround
No verified workaround is recorded. If business-safe, reduce exposure to the affected interface and allow only trusted sources until authoritative guidance is available.
04
Evidence and provenance
Published 12 Oct 2021 · Last source change 3 Aug 2024, 23:58 UTC · CWE-22 · Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')
CVE recordCVE.org · 5.1
CVSS sourceNIST NVD
EPSS source ?The date BlackTree first stored a score for this CVE from the daily FIRST EPSS feed.FIRST · tracked since 2026-08-14
Technical terms and abbreviations used in this report
CVE
Common Vulnerabilities and Exposures: the public identifier for one disclosed vulnerability.
CVSS
Common Vulnerability Scoring System: a technical severity framework; it is not patching priority by itself.
EPSS
Exploit Prediction Scoring System: FIRST's estimate of the probability that exploitation activity will be observed in the next 30 days; it is a forecast, not confirmation.
CWE
Common Weakness Enumeration: the standard category describing the underlying software or hardware weakness.
CNA
CVE Numbering Authority: an organisation authorised to assign and publish CVE records.
CISA ADP
Cybersecurity and Infrastructure Security Agency Authorized Data Publisher: structured enrichment added to a CVE record.
NVD
National Vulnerability Database: NIST's enrichment service for CVE records.
CERT / CSIRT
A computer security incident response team that publishes warnings or coordinates incident response.
PoC
Proof of concept: public material that demonstrates or helps reproduce exploitation.
CSAF
Common Security Advisory Framework: a machine-readable format for security advisories.
LoTL
Living off the land: abuse of legitimate tools or system functions during an attack.
CVE-2021-33722: A vulnerability has been identified in SINEC NMS (All versions < V1.0 SP2 Update 1) | BlackTree