CVE-2025-8949Public exploitNetwork attack vector

Authenticated service crash via unchecked strcpy

Published Aug 14, 2025 · Updated Aug 14, 2025

Stack-based buffer overflow in D-Link DIR-825 2.10 allows remote authenticated users to crash httpd through a crafted ping_ipaddr value. The get_ping_app_stat handler passes the POST-supplied value to parse_special_char, where strcpy copies it into a fixed-size stack variable without adequate length validation. Reaching ping_response.cgi requires login to the router's web interface, and successful exploitation interrupts the embedded web service.

CVSS severity9.8
Critical
EPSS probability0.93%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Stack-based buffer overflow in D-Link DIR-825 2.10 allows remote authenticated users to crash httpd through a crafted ping_ipaddr value. The get_ping_app_stat handler passes the POST-supplied value to parse_special_char, where strcpy copies it into a fixed-size stack variable without adequate length validation. Reaching ping_response.cgi requires login to the router's web interface, and successful exploitation interrupts the embedded web service.

The record

CVE
CVE-2025-8949
Published
Aug 14, 2025
Updated
Aug 14, 2025
Vendor
D-Link
Product
DIR-825
Classifications
CWE-121, CWE-119
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Aug 14, 2025CVE publishedPublication date reported by the CVE source.
  2. Aug 14, 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?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=2.10

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

D-Link · DIR-825version=2.10

Published CVSS scores

7.3VulDBCVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:P
8.3VulDBAV:N/AC:L/Au:M/C:C/I:C/A:C
9.8NVDCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
7.2VulDBCVSS:3.1/AV:N/AC:L/PR:H/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
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-121Stack-based Buffer Overflow
CWE-119Improper Restriction of Operations within the Bounds of a Memory Buffer

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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