How severe is CVE-2026-2403?

CVE-2026-2403 has a CVSS 3.x base score of 4.3, rated medium severity. It is exploitable over network with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is none, integrity low, and availability none.

Is CVE-2026-2403 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (7th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2026-2403?

CVE-2026-2403 affects Schneider-electric Powerchute Serial Shutdown. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2026-2403?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.

Does CVE-2026-2403 have an EU (EUVD) identifier?

Yes. CVE-2026-2403 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-22290.

When was CVE-2026-2403 published?

CVE-2026-2403 was published on 2026-04-14 and last updated on 2026-06-17.

CVE-2026-2403

CVE-2026-2403 is a medium-severity vulnerability in Schneider-electric Powerchute Serial Shutdown with a CVSS 3.x base score of 4.3. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-1284.

Key facts

Severity: Medium (CVSS 3.x base score 4.3)
CVSS v4: 5.3
EPSS exploit prediction: 0% (7th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2026-22290
Weakness: CWE-1284
Affected product: Schneider-electric Powerchute Serial Shutdown
Published: 2026-04-14
Last modified: 2026-06-17

Description

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.

Frequently asked questions

What is CVE-2026-2403?: 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.
How severe is CVE-2026-2403?: CVE-2026-2403 has a CVSS 3.x base score of 4.3, rated medium severity. It is exploitable over network with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is none, integrity low, and availability none.
Is CVE-2026-2403 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (7th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2026-2403?: CVE-2026-2403 affects Schneider-electric Powerchute Serial Shutdown. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2026-2403?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
Does CVE-2026-2403 have an EU (EUVD) identifier?: Yes. CVE-2026-2403 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-22290.
When was CVE-2026-2403 published?: CVE-2026-2403 was published on 2026-04-14 and last updated on 2026-06-17.

References

https://download.schneider-electric.com/files?p_Doc_Ref=SEVD-2026-104-01&p_enDocType=Security+and+Safety+Notice&p_File_Name=SEVD-2026-104-01.pdf

Affected products (1)

cpe:2.3:a:schneider-electric:powerchute_serial_shutdown:*:*:*:*:*:*:*:*

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