CVE-2024-33771Public exploitNetwork attack vector

Authenticated router crash via unbounded webpage copy

Published May 10, 2024 · Updated Feb 13, 2025

Stack-based buffer overflow in D-Link DIR-619L Firmware 2.06B1 allows remote authenticated users to crash the router via formWPS requests. The formWPS handler in /bin/boa copies the webpage parameter with strcpy into a global buffer without a length check, then passes it to sprintf. Web-interface authentication is required; an oversized POST request crashes the router, with no reported data disclosure or modification.

CVSS severity6.5
Medium
EPSS probability1.01%
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 Firmware 2.06B1 allows remote authenticated users to crash the router via formWPS requests. The formWPS handler in /bin/boa copies the webpage parameter with strcpy into a global buffer without a length check, then passes it to sprintf. Web-interface authentication is required; an oversized POST request crashes the router, with no reported data disclosure or modification.

The record

CVE
CVE-2024-33771
Published
May 10, 2024
Updated
Feb 13, 2025
Vendor
D-Link
Product
D-Link DIR-619L Firmware
Classifications
CWE-120, T1499.004
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. May 10, 2024CVE publishedPublication date reported by the CVE source.
  2. Feb 13, 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=2.06B1

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

D-Link · D-Link DIR-619L Firmwareversion=2.06B1

Published CVSS scores

6.5CISA-ADPCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/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.

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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 exploitPublished

Weakness, pattern, technique

CWE-120Buffer Copy without Checking Size of Input ('Classic Buffer Overflow')
T1499.004Application or System Exploitation

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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