CVE-2023-25282Public exploitNetwork attack vector

Persistent router failure via unchecked configuration copies

Published Mar 15, 2023 · Updated Feb 27, 2025

Heap overflow in mydlink_api.ccp in D-Link DIR-820L A1 firmware 1.06B02 allows remote authenticated users to crash its web service. The sub_492A68 path copies config.log_to_syslog and log_opt_dropPackets values with strcpy into controllable heap storage without length checks. A valid web-session cookie is required, and oversized values overwrite configuration data, leaving router functions unavailable even after restart.

CVSS severity6.5
Medium
EPSS probability1.04%
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

Heap overflow in mydlink_api.ccp in D-Link DIR-820L A1 firmware 1.06B02 allows remote authenticated users to crash its web service. The sub_492A68 path copies config.log_to_syslog and log_opt_dropPackets values with strcpy into controllable heap storage without length checks. A valid web-session cookie is required, and oversized values overwrite configuration data, leaving router functions unavailable even after restart.

The record

CVE
CVE-2023-25282
Published
Mar 15, 2023
Updated
Feb 27, 2025
Vendor
Unknown vendor
Product
Unknown product
Classifications
CWE-787, T1499
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Mar 15, 2023CVE publishedPublication date reported by the CVE source.
  2. Feb 27, 2025Record 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?

Affected buildAffected product and version details are unavailable.

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

Affected products and versions are unavailable in this record.

Published CVSS scores

6.5NIST NVDCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/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 9, 2026Sep 15, 2026
Latest reporting daySep 15, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-787Out-of-bounds Write
T1499Endpoint Denial of Service

Public exploit references

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