CVE-2025-2620Public exploitNetwork attack vector

Unauthenticated code execution via stack buffer overflow

Published Mar 22, 2025 · Updated Mar 24, 2025

Stack-based buffer overflow in D-Link DAP-1620 1.03 allows remote attackers to crash its web server via a crafted HTTP request. The mod_graph_auth_uri_handler function copies an oversized auth parameter from a /storage request into a fixed-size stack buffer without bounds checking. No credentials or user interaction are required; return-address control enables code execution, while a basic trigger interrupts the web service until reboot.

CVSS severity9.8
Critical
EPSS probability8.68%
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-based buffer overflow in D-Link DAP-1620 1.03 allows remote attackers to crash its web server via a crafted HTTP request. The mod_graph_auth_uri_handler function copies an oversized auth parameter from a /storage request into a fixed-size stack buffer without bounds checking. No credentials or user interaction are required; return-address control enables code execution, while a basic trigger interrupts the web service until reboot.

The record

CVE
CVE-2025-2620
Published
Mar 22, 2025
Updated
Mar 24, 2025
Vendor
D-Link
Product
DAP-1620
Classifications
CWE-121, CWE-119, CWE-787, T1190
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Mar 22, 2025CVE publishedPublication date reported by the CVE source.
  2. Mar 24, 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?

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

  1. Affected versionversion=1.03

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

D-Link · DAP-1620version=1.03

Published CVSS scores

9.3VulDBCVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N
10.0VulDBAV:N/AC:L/Au:N/C:C/I:C/A:C
9.8VulDBCVSS: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 exploitPublished

Weakness, pattern, technique

CWE-121Stack-based Buffer Overflow
CWE-119Improper Restriction of Operations within the Bounds of a Memory Buffer
CWE-787Out-of-bounds Write
T1190Exploit Public-Facing Application

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