CVE-2023-43201Network attack vector

Memory corruption via hi_up stack overflow

Published Sep 20, 2023 · Updated Sep 25, 2024

Stack-based buffer overflow in D-Link DI-7200GV2.E1 21.04.09E1 allows remote attackers to corrupt memory via the hi_up parameter. The public record identifies qos_ext.asp as the vulnerable function and hi_up as the triggering input, but it does not disclose the precise unsafe memory operation. No authentication or user interaction is required, while the record does not establish whether exploitation results in a crash, code execution, or another concrete outcome.

CVSS severity9.8
Critical
EPSS probability0.88%
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 DI-7200GV2.E1 21.04.09E1 allows remote attackers to corrupt memory via the hi_up parameter. The public record identifies qos_ext.asp as the vulnerable function and hi_up as the triggering input, but it does not disclose the precise unsafe memory operation. No authentication or user interaction is required, while the record does not establish whether exploitation results in a crash, code execution, or another concrete outcome.

The record

CVE
CVE-2023-43201
Published
Sep 20, 2023
Updated
Sep 25, 2024
Vendor
D-Link
Product
DI-7200GV2
Classifications
CWE-787
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Sep 20, 2023CVE publishedPublication date reported by the CVE source.
  2. Sep 25, 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?

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  1. Affected versionversion=v21.04.09e1

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

D-Link · DI-7200GV2version=v21.04.09e1

Published CVSS scores

9.8NIST NVDCVSS: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

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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)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-787Out-of-bounds Write

Public exploit references

No public exploit references are available in this record.

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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