CVE-2025-55599Public exploitNetwork attack vector

Unauthenticated router crash via unchecked WEP key

Published Aug 22, 2025 · Updated Aug 22, 2025

Stack-based buffer overflow in D-Link DIR-619L 2.06B01 allows remote attackers to crash the router via a crafted wireless setup request. The boa web server's formWlanSetup function copies the unbounded f_wds_wepKey parameter into a stack-local buffer, overwriting its return address. Unauthenticated network access to the management endpoint is sufficient; the demonstrated consequence is a persistent service crash, while code execution is asserted but not demonstrated.

CVSS severity7.5
High
EPSS probability0.43%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Stack-based buffer overflow in D-Link DIR-619L 2.06B01 allows remote attackers to crash the router via a crafted wireless setup request. The boa web server's formWlanSetup function copies the unbounded f_wds_wepKey parameter into a stack-local buffer, overwriting its return address. Unauthenticated network access to the management endpoint is sufficient; the demonstrated consequence is a persistent service crash, while code execution is asserted but not demonstrated.

The record

CVE
CVE-2025-55599
Published
Aug 22, 2025
Updated
Aug 22, 2025
Vendor
Unknown vendor
Product
Unknown product
Classifications
CWE-120, CWE-787, T1190
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

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

What is affected?

Affected products and versions are unavailable in this record.

Published CVSS scores

7.5NIST NVDCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
9.8CISA-ADPCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

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
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-120Buffer Copy without Checking Size of Input ('Classic Buffer Overflow')
CWE-787Out-of-bounds Write
T1190Exploit Public-Facing Application

Public exploit references

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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