CVE-2025-31354

CPU exhaustion via crafted F2m certificate parameters

Published Apr 11, 2025 · Updated Apr 11, 2025

Out-of-bounds read in SUBNET Solutions PowerSYSTEM Center 2020 5.24.x and earlier allows adjacent attackers to interrupt service. During certificate import, the SMTPS notification service evaluates crafted F2m elliptic-curve parameters and performs an out-of-bounds read, driving excessive CPU consumption. Reachability requires an adjacent network position and a crafted certificate; the published impact is limited to service degradation.

CVSS severity5.3
Medium
EPSS probability0.14%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Out-of-bounds read in SUBNET Solutions PowerSYSTEM Center 2020 5.24.x and earlier allows adjacent attackers to interrupt service. During certificate import, the SMTPS notification service evaluates crafted F2m elliptic-curve parameters and performs an out-of-bounds read, driving excessive CPU consumption. Reachability requires an adjacent network position and a crafted certificate; the published impact is limited to service degradation.

The record

CVE
CVE-2025-31354
Published
Apr 11, 2025
Updated
Apr 11, 2025
Vendor
SUBNET Solutions Inc.
Product
PowerSYSTEM Center
Classifications
CWE-125, T1499
Attack vector
adjacent
Privileges
unauthenticated

Timeline

How it unfolded

  1. Apr 11, 2025CVE publishedPublication date reported by the CVE source.
  2. Apr 11, 2025Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=0 <=5.24.x

What conditions does exploitation require?

Attack vectoradjacent
Required privilegesunauthenticated

What is affected?

SUBNET Solutions Inc. · PowerSYSTEM Centerversion=0 <=5.24.x

Published CVSS scores

5.3ICS-CERTCVSS:4.0/AV:A/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N
4.3ICS-CERTCVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

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No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectoradjacent
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-125Out-of-bounds Read
T1499Endpoint Denial of Service

Public exploit references

No public exploit references are available in this record.

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Technologies

Your stack

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Your stack

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