CVE-2025-55631

Service interruption via system-wide session exhaustion

Published Aug 22, 2025 · Updated Sep 11, 2025

Resource exhaustion in Reolink Smart 2K+ Plug-in Wi-Fi Video Doorbell firmware 3.0.0.4662_2503122283 allows local users to interrupt service. Session capacity is enforced system-wide rather than per account, so one user can consume the shared session allowance and deny sessions to other users. Exploitation requires local access; Reolink disputes the flaw because the supplier describes the system-wide limit as intentional.

CVSS severity4.0
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

Resource exhaustion in Reolink Smart 2K+ Plug-in Wi-Fi Video Doorbell firmware 3.0.0.4662_2503122283 allows local users to interrupt service. Session capacity is enforced system-wide rather than per account, so one user can consume the shared session allowance and deny sessions to other users. Exploitation requires local access; Reolink disputes the flaw because the supplier describes the system-wide limit as intentional.

The record

CVE
CVE-2025-55631
Published
Aug 22, 2025
Updated
Sep 11, 2025
Vendor
Unknown vendor
Product
Unknown product
Classifications
CWE-400, T1499
Attack vector
local
Privileges
unauthenticated

Timeline

How it unfolded

  1. Aug 22, 2025CVE publishedPublication date reported by the CVE source.
  2. Sep 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?

Affected buildAffected product and version details are unavailable.

What conditions does exploitation require?

Attack vectorlocal
Required privilegesunauthenticated

What is affected?

Affected products and versions are unavailable in this record.

Published CVSS scores

4.0CISA-ADPCVSS:3.1/AV:L/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)
Vectorlocal
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-400Uncontrolled Resource Consumption
T1499Endpoint Denial of Service

Public exploit references

No public exploit references are available in this record.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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