Improper input validation in Easergy T300
Priority LOW 27CWE-20Published · Updated
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- None
- Attack complexity
- Low
- Impact type
- —
- Confidentiality · integrity · availability
- None · None · Low
- Fix status
- No fix listed
Attack profile from CVSS 3.1 · NVD. Fix status from CNA.
Summary
A CWE-20: Improper Input Validation vulnerability exists in Easergy T300 (Firmware version 1.5.2 and older) which could allow an attacker to disable the webserver service on the device when specially crafted network packets are sent.
Why it matters now
EPSS 0.01288 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 |
|---|---|---|---|---|---|
| — | Easergy T300 (Firmware version 1.5.2 and older) | Easergy T300 (Firmware version 1.5.2 and older) | — | No fix listed | CNA |
- Easergy T300 (Firmware version 1.5.2 and older) Vendor— Affected Easergy T300 (Firmware version 1.5.2 and older) Fixed in — No fix listed CNA
CPE configurations NVD · 2
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:o:schneider-electric:easergy_t300_firmware:*:*:*:*:*:*:*:* | up to 1.5.2 | Vulnerable | Schneider Electric |
| cpe:2.3:h:schneider-electric:easergy_t300:-:*:*:*:*:*:*:* | not specified by NVD | Running on | Schneider Electric |
- cpe:2.3:o:schneider-electric:easergy_t300_firmware:*:*:*:*:*:*:*:* Versions up to 1.5.2 Vulnerable ·Schneider Electric
- cpe:2.3:h:schneider-electric:easergy_t300:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Schneider Electric
Remediation
No fixed version listed by the sources yet.
Timeline
- 2026-10-02 Threatist record created from CVE-2020-7504
- 2026-10-03 Alias added: GHSA-8393-8q55-5f3r
References
More Schneider Electric Easergy T300 Firmware vulnerabilities
- TI-2020-15418 Rockwell Automation ISaGRAF5 Runtime Relative Path Traversal CVSS 3.1CRITICAL 9.8
- TI-2020-06084 Improper access control in Easergy T300 with firmware 2.7 and older CVSS 3.1CRITICAL 9.8
- TI-2020-17145 Missing authorization in Easergy T300 CVSS 3.1CRITICAL 9.8
- TI-2020-06035 A CWE-1103: Use of Platform-Dependent Third Party Components with vulnerabilities… CVSS 3.1CRITICAL 9.8
- TI-2020-06031 Missing brute-force protection in Easergy T300 CVSS 3.1CRITICAL 9.8
- TI-2020-15420 Rockwell Automation ISaGRAF5 Runtime Cleartext Transmission of Sensitive Information CVSS 3.1HIGH 8.8
Sources
- CVE-2020-7504 · CVE Program
- CVE-2020-7504 · NVD
- FIRST EPSS
- GHSA-8393-8q55-5f3r · GitHub Advisory Database · CC BY 4.0
This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences