Cyber Resilience

CVE-2026-2403

Medium

Published: 14 April 2026

Published
14 April 2026
Modified
22 April 2026
KEV Added
—
Patch
—
CVSS Score v4 5.3 CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
EPSS Score 0.0017 6.6th percentile
Risk Priority 35 floored blend · peak EPSS

Summary

CVE-2026-2403 is a medium-severity Improper Validation of Specified Quantity in Input (CWE-1284) vulnerability in Schneider-Electric Powerchute Serial Shutdown. Its CVSS base score is 5.3 (Medium).

Operationally, exploitation aligns with the MITRE ATT&CK technique Indicator Removal (T1070); ranked at the 6.6th percentile by exploit likelihood (below the median); it is not currently listed in the CISA KEV catalog.

EU & UK References

Vulnerability details

CWE-1284 Improper Validation of Specified Quantity in Input vulnerability exists that could cause Event and Data Log truncation impacting log integrity when a Web Admin user alters the POST /logsettings request payload.

CWE(s)
CWE-1284

Related Threats

MITRE ATT&CK Enterprise TechniquesAI

T1070 Indicator Removal Stealth
Adversaries may selectively delete or modify artifacts generated to reduce indications of their presence and blend in with legitimate activity.
attack.mitre.org →
T1685.005 Clear Windows Event Logs Defense Impairment
Adversaries may clear Windows Event Logs to hide the activity of an intrusion.
attack.mitre.org →
T1685.006 Clear Linux or Mac System Logs Defense Impairment
Adversaries may clear system logs to hide evidence of an intrusion.
attack.mitre.org →
T1685 Disable or Modify Tools Defense Impairment
Adversaries may disable, degrade, or tamper with security tools or applications (e.
attack.mitre.org →
T1685.001 Disable or Modify Windows Event Log Defense Impairment
Adversaries may disable or modify the Windows Event Log to limit data that can be leveraged for detections and audits.
attack.mitre.org →
Why these techniques?

Vulnerability directly enables log truncation via malformed POST input, facilitating indicator removal and defense impairment by impacting log integrity.

Confidence: HIGH · MITRE ATT&CK Enterprise v19.0

Affected Assets

schneider-electric
powerchute serial shutdown
≤ 1.5

Mitigating Controls

No mitigating controls mapped yet. The per-CVE control annotator has not reached this CVE.

References