Improper authentication in PowerLogic PM55xx, PowerLogic EGX100, and PowerLogic EGX300
Priority LOW 34CWE-287Published · Updated
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- None
- Attack complexity
- Low
- Impact type
- Security bypass
- Confidentiality · integrity · availability
- None · None · Low
- Fix status
- No fix listed
Attack profile from CVSS 3.1 · CISA ADP. Fix status from CNA. Impact type from CWE-287.
Summary
A CWE-287: Improper Authentication vulnerability exists in PowerLogic PM55xx, PowerLogic PM8ECC, PowerLogic EGX100 and PowerLogic EGX300 (see security notification for version infromation) that could cause loss of connectivity to the device via Modbus TCP protocol when an attacker sends a specially crafted HTTP request.
Why it matters now
Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.01858 79th percentileScored 2026-11-07
Fix No fix listed No fixed version in the sources yet
SSVC decision points
CISA ADP · SSVC 2.0.3
- Exploitation
- None
- Automatable
- Yes
- Technical impact
- Partial
The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| — | PowerLogic PM55xx, PowerLogic EGX100, and PowerLogic EGX300 (see security notification for version infromation) | PowerLogic PM55xx, PowerLogic EGX100, and PowerLogic EGX300 (see security notification for version infromation) | — | No fix listed | CNA |
- PowerLogic PM55xx, PowerLogic EGX100, and PowerLogic EGX300 (see security notification for version infromation) Vendor— Affected PowerLogic PM55xx, PowerLogic EGX100, and PowerLogic EGX300 (see security notification for version infromation) Fixed in — No fix listed CNA
CPE configurations NVD · 8
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:o:schneider-electric:powerlogic_pm5560_firmware:*:*:*:*:*:*:*:* | before 2.7.8 | Vulnerable | Schneider Electric |
| cpe:2.3:h:schneider-electric:powerlogic_pm5560:-:*:*:*:*:*:*:* | not specified by NVD | Running on | Schneider Electric |
| cpe:2.3:o:schneider-electric:powerlogic_pm5561_firmware:*:*:*:*:*:*:*:* | before 10.7.3 | Vulnerable | Schneider Electric |
| cpe:2.3:h:schneider-electric:powerlogic_pm5561:-:*:*:*:*:*:*:* | not specified by NVD | Running on | Schneider Electric |
| cpe:2.3:o:schneider-electric:powerlogic_pm5562_firmware:*:*:*:*:*:*:*:* | up to 2.5.4 | Vulnerable | Schneider Electric |
| cpe:2.3:h:schneider-electric:powerlogic_pm5562:-:*:*:*:*:*:*:* | not specified by NVD | Running on | Schneider Electric |
| cpe:2.3:o:schneider-electric:powerlogic_pm5563_firmware:*:*:*:*:*:*:*:* | before 2.7.8 | Vulnerable | Schneider Electric |
| cpe:2.3:h:schneider-electric:powerlogic_pm5563:-:*:*:*:*:*:*:* | not specified by NVD | Running on | Schneider Electric |
- cpe:2.3:o:schneider-electric:powerlogic_pm5560_firmware:*:*:*:*:*:*:*:* Versions before 2.7.8 Vulnerable ·Schneider Electric
- cpe:2.3:h:schneider-electric:powerlogic_pm5560:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Schneider Electric
- cpe:2.3:o:schneider-electric:powerlogic_pm5561_firmware:*:*:*:*:*:*:*:* Versions before 10.7.3 Vulnerable ·Schneider Electric
- cpe:2.3:h:schneider-electric:powerlogic_pm5561:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Schneider Electric
- cpe:2.3:o:schneider-electric:powerlogic_pm5562_firmware:*:*:*:*:*:*:*:* Versions up to 2.5.4 Vulnerable ·Schneider Electric
- cpe:2.3:h:schneider-electric:powerlogic_pm5562:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Schneider Electric
- cpe:2.3:o:schneider-electric:powerlogic_pm5563_firmware:*:*:*:*:*:*:*:* Versions before 2.7.8 Vulnerable ·Schneider Electric
- cpe:2.3:h:schneider-electric:powerlogic_pm5563:-:*:*:*:*:*:*:* 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-2021-22764
- 2026-10-03 Alias added: GHSA-57rv-qg24-x8hj
References
More Schneider Electric Powerlogic Pm5560 Firmware vulnerabilities
- TI-2021-05644 Weak password recovery in PowerLogic PM55xx, PowerLogic PM8ECC, PowerLogic EGX100 and… CVSS 3.1CRITICAL 9.8
- TI-2018-05637 Cross-site scripting in Schneider Electric PowerLogic - PM5560 prior to FW version 2.5.4 CVSS 3.1MEDIUM 5.4
Sources
- CVE-2021-22764 · CVE Program
- CVE-2021-22764 · NVD
- FIRST EPSS
- GHSA-57rv-qg24-x8hj · 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