CVE-2025-48016

Resource exhaustion via unrate-limited OpenFlow discovery

Published May 20, 2025 · Updated May 20, 2025

Resource exhaustion in SEL-5056 Network Management System before 2.16.0 allows remote attackers to exhaust controller resources. The OpenFlow discovery protocol accepts discovery interactions without rate limiting, permitting repeated traffic to consume resources without a frequency bound. The attacker must reach the controller from an adjacent network; the vendor has not disclosed whether exhaustion causes slowdown, a hang, or a crash.

CVSS severity4.3
Medium
EPSS probability0.22%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Resource exhaustion in SEL-5056 Network Management System before 2.16.0 allows remote attackers to exhaust controller resources. The OpenFlow discovery protocol accepts discovery interactions without rate limiting, permitting repeated traffic to consume resources without a frequency bound. The attacker must reach the controller from an adjacent network; the vendor has not disclosed whether exhaustion causes slowdown, a hang, or a crash.

The record

CVE
CVE-2025-48016
Published
May 20, 2025
Updated
May 20, 2025
Vendor
Schweitzer Engineering Laboratories
Product
SEL-5056 Network Management System
Classifications
CWE-799, T1499.002
Attack vector
adjacent
Privileges
unauthenticated

Timeline

How it unfolded

  1. May 20, 2025CVE publishedPublication date reported by the CVE source.
  2. May 20, 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 <2.16.0

What conditions does exploitation require?

Attack vectoradjacent
Required privilegesunauthenticated

What is affected?

Schweitzer Engineering Laboratories · SEL-5056 Network Management Systemversion=0 <2.16.0

Published CVSS scores

4.3Schweitzer Engineering LaboratoriesCVSS: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-799Improper Control of Interaction Frequency
T1499.002Endpoint Denial of Service: Service Exhaustion Flood

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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