CVE-2023-44807Network attack vector

Unauthenticated memory corruption via cancelPing stack overflow

Published Oct 6, 2023 · Updated Sep 19, 2024

Stack overflow in the cancelPing handler in D-Link DIR-820L 1.05B03 allows remote attackers to corrupt memory via a crafted request. The web interface dispatches a request whose ccp_act value is cancelPing to the ping-tool branch, where attacker-controlled data overruns a stack buffer. No authentication or user interaction is required; public evidence establishes remotely reachable memory corruption but not reliable code execution.

CVSS severity9.8
Critical
EPSS probability1.05%
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 the cancelPing handler in D-Link DIR-820L 1.05B03 allows remote attackers to corrupt memory via a crafted request. The web interface dispatches a request whose ccp_act value is cancelPing to the ping-tool branch, where attacker-controlled data overruns a stack buffer. No authentication or user interaction is required; public evidence establishes remotely reachable memory corruption but not reliable code execution.

The record

CVE
CVE-2023-44807
Published
Oct 6, 2023
Updated
Sep 19, 2024
Vendor
D-Link
Product
D-Link DIR-820L
Classifications
CWE-787, T1190
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Oct 6, 2023CVE publishedPublication date reported by the CVE source.
  2. Sep 19, 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=1.05B03

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

D-Link · D-Link DIR-820Lversion=1.05B03

Published CVSS scores

9.8NIST National Vulnerability DatabaseCVSS: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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