CVE-2025-6616Public exploitNetwork attack vector

Authenticated code execution via unchecked curTime copy

Published Jun 25, 2025 · Updated Jun 25, 2025

Stack-based buffer overflow in D-Link DIR-619L 2.06B01 allows remote authenticated users to crash the router via a crafted HTTP request. The boa formSetWAN_Wizard51 handler copies the curTime parameter into a stack-local variable without checking its length, overwriting the return address. Authenticated management access is required; the proof of concept causes persistent service interruption, while return-address control supports arbitrary code execution.

CVSS severity8.8
High
EPSS probability1.19%
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-619L 2.06B01 allows remote authenticated users to crash the router via a crafted HTTP request. The boa formSetWAN_Wizard51 handler copies the curTime parameter into a stack-local variable without checking its length, overwriting the return address. Authenticated management access is required; the proof of concept causes persistent service interruption, while return-address control supports arbitrary code execution.

The record

CVE
CVE-2025-6616
Published
Jun 25, 2025
Updated
Jun 25, 2025
Vendor
D-Link
Product
DIR-619L
Classifications
CWE-119, CWE-121, T1210
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Jun 25, 2025CVE publishedPublication date reported by the CVE source.
  2. Jun 25, 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=2.06B01

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

D-Link · DIR-619Lversion=2.06B01

Published CVSS scores

7.4VulDBCVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:P
9.0VulDBAV:N/AC:L/Au:S/C:C/I:C/A:C
8.8VulDBCVSS:3.1/AV:N/AC:L/PR:L/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-119Improper Restriction of Operations within the Bounds of a Memory Buffer
CWE-121Stack-based Buffer Overflow
T1210Exploitation of Remote Services

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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