CVE-2023-43196Network attack vector

Unauthenticated memory corruption via zn_jb stack overflow

Published Sep 20, 2023 · Updated Sep 25, 2024

Stack overflow in D-Link DI-7200GV2.E1 21.04.09E1 allows remote attackers to corrupt process memory through the zn_jb parameter. The arp_sys.asp function processes the attacker-controlled value without enforcing the destination stack buffer bounds. No authentication or user interaction is required, and the corruption can crash the service or compromise control flow.

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

Stack overflow in D-Link DI-7200GV2.E1 21.04.09E1 allows remote attackers to corrupt process memory through the zn_jb parameter. The arp_sys.asp function processes the attacker-controlled value without enforcing the destination stack buffer bounds. No authentication or user interaction is required, and the corruption can crash the service or compromise control flow.

The record

CVE
CVE-2023-43196
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?

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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

9.8NVDCVSS: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
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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