CVE-2023-43198Network attack vector

Memory corruption via oversized popupId parameter

Published Sep 20, 2023 · Updated Sep 25, 2024

Stack overflow in H5/hi_block.asp in D-Link DI-7200GV2 E1 21.04.09E1 allows remote attackers to corrupt memory via popupId. The request handler processes an oversized attacker-controlled popupId value without effective bounds enforcement, overwriting stack memory. No authentication or user interaction is required; the published record does not establish whether the corruption yields only a crash or code execution.

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

See if you're affected

Explore vulnerability checks for your environment with Hinoki.

Book a demo

Summary

What happened

Stack overflow in H5/hi_block.asp in D-Link DI-7200GV2 E1 21.04.09E1 allows remote attackers to corrupt memory via popupId. The request handler processes an oversized attacker-controlled popupId value without effective bounds enforcement, overwriting stack memory. No authentication or user interaction is required; the published record does not establish whether the corruption yields only a crash or code execution.

The record

CVE
CVE-2023-43198
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

Compare your product and version with the public record. A matching version still requires validation against your environment.

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.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

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.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

See the directory against your own environment.

Your stack

Check the software in your environment

Book a demo to see how Hinoki identifies affected software and validates exploitability in your environment.

Book a demo