CVE-2024-27660

Adjacent-network crash via null pointer dereference

Published Feb 29, 2024 · Updated Nov 19, 2024

NULL pointer dereference in D-Link DIR-823G firmware 1.02b05 allows remote attackers on an adjacent network to crash an affected process. The sub_41C488 routine dereferences a null pointer while processing crafted input, terminating the process and interrupting service. No authentication or user interaction is required, but adjacent-network reachability is necessary and the reported consequence is limited to availability.

CVSS severity6.5
Medium
EPSS probability0.64%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

NULL pointer dereference in D-Link DIR-823G firmware 1.02b05 allows remote attackers on an adjacent network to crash an affected process. The sub_41C488 routine dereferences a null pointer while processing crafted input, terminating the process and interrupting service. No authentication or user interaction is required, but adjacent-network reachability is necessary and the reported consequence is limited to availability.

The record

CVE
CVE-2024-27660
Published
Feb 29, 2024
Updated
Nov 19, 2024
Vendor
D-Link
Product
DIR-823G
Classifications
CWE-476, T1499.004
Attack vector
adjacent
Privileges
unauthenticated

Timeline

How it unfolded

  1. Feb 29, 2024CVE publishedPublication date reported by the CVE source.
  2. Nov 19, 2024Record 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=1.02b05

What conditions does exploitation require?

Attack vectoradjacent
Required privilegesunauthenticated

What is affected?

D-Link · DIR-823Gversion=1.02b05

Published CVSS scores

6.5CISA-ADPCVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
6.5NVDCVSS:3.1/AV:A/AC:L/PR:N/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 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectoradjacent
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-476NULL Pointer Dereference
T1499.004Application or System Exploitation

Public exploit references

No public exploit references are available in this record.

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Technologies

Your stack

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Your stack

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