CVE-2023-43199Network attack vector

Unauthenticated memory corruption via oversized prev parameter

Published Sep 20, 2023 · Updated Sep 25, 2024

A stack overflow in H5/login.cgi in D-Link DI-7200GV2 E1 21.04.09E1 allows remote attackers to corrupt memory through prev. Public records identify the affected handler and input, but do not disclose the copy operation or missing bound that causes the overflow. No authentication or user interaction is required; corrupted process memory can crash the service, while code execution has not been publicly demonstrated.

CVSS severity9.8
Critical
EPSS probability0.77%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

A stack overflow in H5/login.cgi in D-Link DI-7200GV2 E1 21.04.09E1 allows remote attackers to corrupt memory through prev. Public records identify the affected handler and input, but do not disclose the copy operation or missing bound that causes the overflow. No authentication or user interaction is required; corrupted process memory can crash the service, while code execution has not been publicly demonstrated.

The record

CVE
CVE-2023-43199
Published
Sep 20, 2023
Updated
Sep 25, 2024
Vendor
D-Link
Product
DI-7200GV2
Classifications
CWE-787, T1190
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?

Compare these published version ranges with your installed build and any vendor patches.

  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

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)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-787Out-of-bounds Write
T1190Exploit Public-Facing Application

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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