Improper authentication in A-Stage Inc. SCT-40CM01SR and AT-40CM01SR
Priority MEDIUM 45CWE-287Published · Updated
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- None
- Attack complexity
- Low
- Impact type
- Security bypass
- Confidentiality · integrity · availability
- High · High · High
- Fix status
- No fix listed
Attack profile from CVSS 3.1 · NVD. Fix status from CNA. Impact type from CWE-287.
Summary
Improper authentication vulnerability in SCT-40CM01SR and AT-40CM01SR allows an attacker to bypass access restriction and execute an arbitrary command via telnet.
Why it matters now
EPSS 0.0129 70th percentileScored 2026-11-07
Fix No fix listed No fixed version in the sources yet
SSVC decision points
Not available: CISA has not published SSVC decision points for this record.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| A-Stage Inc. | SCT-40CM01SR and AT-40CM01SR | all versions | — | No fix listed | CNA |
- SCT-40CM01SR and AT-40CM01SR VendorA-Stage Inc. Affected all versions Fixed in — No fix listed CNA
CPE configurations NVD · 4
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:o:a-stage-inc:at-40cm01sr_firmware:-:*:*:*:*:*:*:* | not specified by NVD | Vulnerable | A-Stage Inc. |
| cpe:2.3:h:a-stage-inc:at-40cm01sr:*:*:*:*:*:*:*:* | all versions | Running on | A-Stage Inc. |
| cpe:2.3:o:a-stage-inc:sct-40cm01sr_firmware:-:*:*:*:*:*:*:* | not specified by NVD | Vulnerable | A-Stage Inc. |
| cpe:2.3:h:a-stage-inc:sct-40cm01sr:-:*:*:*:*:*:*:* | not specified by NVD | Running on | A-Stage Inc. |
- cpe:2.3:o:a-stage-inc:at-40cm01sr_firmware:-:*:*:*:*:*:*:* Versions not specified by NVD Vulnerable ·A-Stage Inc.
- cpe:2.3:h:a-stage-inc:at-40cm01sr:*:*:*:*:*:*:*:* Versions all versions Running on ·A-Stage Inc.
- cpe:2.3:o:a-stage-inc:sct-40cm01sr_firmware:-:*:*:*:*:*:*:* Versions not specified by NVD Vulnerable ·A-Stage Inc.
- cpe:2.3:h:a-stage-inc:sct-40cm01sr:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·A-Stage Inc.
Remediation
No fixed version listed by the sources yet.
Timeline
- 2026-10-02 Threatist record created from CVE-2021-20776
- 2026-10-03 Alias added: GHSA-38wv-982m-4q6p
References
Sources
- CVE-2021-20776 · CVE Program
- CVE-2021-20776 · NVD
- FIRST EPSS
- GHSA-38wv-982m-4q6p · GitHub Advisory Database · CC BY 4.0
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