CVE-2023-25281Public exploitNetwork attack vector

Web-service crash via unbounded nextPage copy

Published Mar 16, 2023 · Updated Feb 26, 2025

Stack overflow in pingV4Msg in D-Link DIR-820L A1 firmware 1.05B03 allows remote attackers to crash the web service via ping.ccp. The sub_49E5B0 function copies the nextPage request value into a fixed-size stack buffer with strcpy without checking its length. A POST request with ccp_act set to cancelPing reaches the vulnerable path; the demonstrated consequence is a web-service crash.

CVSS severity7.5
High
EPSS probability1.07%
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 pingV4Msg in D-Link DIR-820L A1 firmware 1.05B03 allows remote attackers to crash the web service via ping.ccp. The sub_49E5B0 function copies the nextPage request value into a fixed-size stack buffer with strcpy without checking its length. A POST request with ccp_act set to cancelPing reaches the vulnerable path; the demonstrated consequence is a web-service crash.

The record

CVE
CVE-2023-25281
Published
Mar 16, 2023
Updated
Feb 26, 2025
Vendor
Unknown vendor
Product
Unknown product
Classifications
CWE-787, T1499.004
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Mar 16, 2023CVE publishedPublication date reported by the CVE source.
  2. Feb 26, 2025Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Affected buildAffected product and version details are unavailable.

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Affected products and versions are unavailable in this record.

Published CVSS scores

7.5NIST NVDCVSS:3.1/AV:N/AC:L/PR:N/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.

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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 exploitPublished

Weakness, pattern, technique

CWE-787Out-of-bounds Write
T1499.004Application or System Exploitation

Public exploit references

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

Technologies

Your stack

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Your stack

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