CVE-2023-43862Public exploitNetwork attack vector

Remote service interrupt via unchecked currtime copy

Published Sep 28, 2023 · Updated Sep 23, 2024

A buffer overflow in D-Link DIR-619L Firmware 2.02 allows remote attackers to cause a service interrupt via the web interface. The formLanguageChange handler reads the front-end currtime parameter with websGetVar and copies it into a stack buffer through sprintf without a length limit. The request is unauthenticated according to the published CVSS vector, and the documented consequence is denial of service rather than a demonstrated confidentiality or integrity compromise.

CVSS severity7.5
High
EPSS probability0.74%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

A buffer overflow in D-Link DIR-619L Firmware 2.02 allows remote attackers to cause a service interrupt via the web interface. The formLanguageChange handler reads the front-end currtime parameter with websGetVar and copies it into a stack buffer through sprintf without a length limit. The request is unauthenticated according to the published CVSS vector, and the documented consequence is denial of service rather than a demonstrated confidentiality or integrity compromise.

The record

CVE
CVE-2023-43862
Published
Sep 28, 2023
Updated
Sep 23, 2024
Vendor
D-Link
Product
D-Link DIR-619L Firmware
Classifications
CWE-787, T1190
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Sep 28, 2023CVE publishedPublication date reported by the CVE source.
  2. Sep 23, 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=2.02

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

D-Link · D-Link DIR-619L Firmwareversion=2.02

Published CVSS scores

7.5NIST NVDCVSS:3.1/AV:N/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 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-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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