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CVE Record

CVE-2021-45894: An issue was discovered in Softwarebuero Zauner ARC 4.2.0.4.

An issue was discovered in Softwarebuero Zauner ARC 4.2.0.4. There is Cleartext Transmission of Sensitive Information.

UnknownCVSS not scoredNot KEV-listedUpdated
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Glexia's TakeAutomated analysisunknown

Security readout for executives and security teams

Plain-English summary

CVE-2021-45894 reports that Softwarebuero Zauner ARC 4.2.0.4 may transmit sensitive information without encryption. In business terms, someone able to observe the network path could potentially read protected data. The public bundle does not state impact scope, a patch, or active exploitation.

Executive priority

Treat this as an exposure clarification item, not a confirmed emergency from the available evidence. Prioritize it higher if ARC handles regulated, credential, customer, or operationally sensitive data, or if ARC traffic crosses networks outside direct organizational control.

Technical view

The CVE describes Cleartext Transmission of Sensitive Information in Softwarebuero Zauner ARC 4.2.0.4. The provided record has no CVSS score, CWE mapping, CPEs, or named fixed version. The referenced SySS advisory is the primary technical source, but the prompt bundle does not include its details.

Likely exposure

Likely exposure is limited to organizations running Softwarebuero Zauner ARC 4.2.0.4, especially where ARC traffic carries sensitive data across shared, untrusted, or poorly segmented networks. Inventory confirmation is required because the bundle does not provide CPEs or broader affected-version data.

Exploitation context

The bundle does not cite active exploitation, and the CVE is not listed as CISA KEV. Exploitation risk would depend on an attacker’s ability to observe the relevant network traffic and whether sensitive data is actually transmitted by ARC in cleartext.

Researcher notes

Evidence is sparse. The public CVE text names ARC 4.2.0.4 and the weakness category, but omits scoring, affected-version range, patch status, and exploit details. Do not extrapolate beyond cleartext transmission risk without reviewing the full SySS advisory or vendor guidance.

Mitigation direction

  • Identify whether ARC 4.2.0.4 is deployed in the environment.
  • Review Softwarebuero Zauner and SySS guidance for fixes or vendor-approved mitigations.
  • Avoid sending sensitive ARC workflows over untrusted networks until vendor guidance is confirmed.
  • Restrict ARC traffic to trusted network segments or protected connectivity.
  • Monitor vendor sources for a fixed version or configuration advisory.

Validation and detection

  • Confirm installed ARC versions through asset inventory or endpoint management records.
  • Map ARC communication paths and identify any untrusted network segments.
  • Use approved defensive testing to verify whether sensitive ARC traffic is encrypted.
  • Review network controls limiting who can observe or intercept ARC traffic.
  • Document compensating controls if no vendor fix is available.
Prepared
Confidence
medium
Sources
4

Public sources used

Generated from the cited source records. This long-tail analysis has not been individually reviewed by a named human.

Potential ATT&CK relevance

Conservative CVE-to-ATT&CK context

These mappings and lookup hints may be relevant to the vulnerability behavior, CWE, affected product, or exposure path. Glexia-inferred context is not an official MITRE, ATT&CK, CWE, or CVE Program mapping.

ATT&CK lookup starting points

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CVE-2021-45894 mapping review

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Vulnerability profileCVE Program record
Severity
Unknown
CVSS
Not scored
Known Exploited
No
Published
Official CVE source material

CNA and ADP enrichment extracted from CVE v5

These fields come from the CVE record and ADP containers, not from Glexia's Take. They preserve time-varying source decisions such as CISA SSVC, KEV status, CVSS metrics, and provider references.

0CVSS vectors
0Timeline events
0ADP providers
3Source links

CVSS and timeline data

No CVSS vectors or timeline events were available in the normalized CVE source material.

Source materials

Affected products

Products and packages named in the record

VendorProductVersion / packageStatus
n/an/an/aListed
Weakness

CWE details

No CWE listed

CWE links open Glexia weakness intelligence pages with official CWE context, developer remediation guidance, and related CVE mappings.