CVE-2024-33773Public exploitNetwork attack vector

Authenticated router crash via unchecked webpage copy

Published May 10, 2024 · Updated Feb 13, 2025

Stack buffer overflow in /bin/boa on D-Link DIR-619L Rev.B 2.06B1 allows remote authenticated users to crash the router via HTTP. formWlanGuestSetup reads the webpage parameter with websGetVar, copies it with unbounded strcpy, then passes it through websRedirect to sprintf without a length restriction. Access to the authenticated web interface is required, and a sufficiently long webpage value interrupts availability by crashing the device.

CVSS severity6.5
Medium
EPSS probability1.03%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Stack buffer overflow in /bin/boa on D-Link DIR-619L Rev.B 2.06B1 allows remote authenticated users to crash the router via HTTP. formWlanGuestSetup reads the webpage parameter with websGetVar, copies it with unbounded strcpy, then passes it through websRedirect to sprintf without a length restriction. Access to the authenticated web interface is required, and a sufficiently long webpage value interrupts availability by crashing the device.

The record

CVE
CVE-2024-33773
Published
May 10, 2024
Updated
Feb 13, 2025
Vendor
D-Link
Product
DIR-619L
Classifications
CWE-120, T1499
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 · DIR-619Lversion=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')
T1499Endpoint Denial of Service

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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