CVE-2025-49488Network attack vector

Authenticated resource depletion via phonebook release failure

Published Jul 1, 2025 · Updated Jul 1, 2025

Resource leak in ASR Falcon_Linux, Kestrel, and Lapwing_Linux before 1536 allows remote authenticated users to deplete resources. The router phonebook code in router/phonebook/pb.c fails to shut down or release a resource, but ASR has not identified the resource or triggering input. Network access with low privileges is required; repeated triggering can exhaust the resource, expose limited data, and interrupt service.

CVSS severity5.4
Medium
EPSS probability0.24%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Resource leak in ASR Falcon_Linux, Kestrel, and Lapwing_Linux before 1536 allows remote authenticated users to deplete resources. The router phonebook code in router/phonebook/pb.c fails to shut down or release a resource, but ASR has not identified the resource or triggering input. Network access with low privileges is required; repeated triggering can exhaust the resource, expose limited data, and interrupt service.

The record

CVE
CVE-2025-49488
Published
Jul 1, 2025
Updated
Jul 1, 2025
Vendor
Unknown vendor
Product
Unknown product
Classifications
CWE-404, CAPEC-131, T1499
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Jul 1, 2025CVE publishedPublication date reported by the CVE source.
  2. Jul 1, 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 vectornetwork
Required privilegesauthenticated

What is affected?

Affected products and versions are unavailable in this record.

Published CVSS scores

5.4ASR Microelectronics Co., Ltd.CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:L
5.3NIST National Vulnerability DatabaseCVSS:3.1/AV:N/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.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 9, 2026Sep 15, 2026
Latest reporting daySep 15, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-404Improper Resource Shutdown or Release
CAPEC-131Resource Leak Exposure
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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