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Dir 825 Firmware EUVDEUVD-2025-20760

| CVE-2025-7206 CRITICAL
Buffer Overflow (CWE-119)
2025-07-09 cna@vuldb.com
9.8
CVSS 3.1 · NVD
View

Vulnerability Assessment

Weakness
CWE
OWASP Top 10:2025
A06:2021 - Vulnerable and Outdated Components
ASVS 5.0
V15 - Secure Coding and Architecture Bounds checking, buffer size validation
MITRE ATT&CK

2 techniques across 2 tactics: Execution, Privilege Escalation

The technique list with ATT&CK links and the kill-chain view is part of the Basic plan and up.

Impact

Successful exploitation can lead to arbitrary code execution, denial of service, or privilege escalation depending on the memory layout and protections in place. With a CVSS score of 9.8 (CRITICAL), this represents a critical risk.

Exploit ScenarioDerived

An attacker sends an oversized input to a vulnerable function, overwriting the return address on the stack to redirect execution to attacker-controlled shellcode.

Act Now Prioritize within 24-48h. Why: CRITICAL severity + public POC available.
No patch listed yet 0.5% exploitation probability (EPSS)

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AnalysisAIv1 – Mar 16, 2026

A vulnerability, which was classified as critical, has been found in D-Link DIR-825 2.10. This issue affects the function sub_410DDC of the file switch_language.cgi of the component httpd. The manipulation of the argument Language leads to stack-based buffer overflow. The attack may be initiated remotely. The exploit has been disclosed to the public and may be used. This vulnerability only affects products that are no longer supported by the maintainer.

Earlier versions of this analysis (1)
v1 Mar 16, 2026 - 06:20 CVSS 9.8

RemediationAI

Use memory-safe languages or bounds-checked functions. Enable ASLR, DEP/NX, and stack canaries. Apply vendor patches promptly.

Affected VersionsENISA

DIR-825 2.10

Affected Packages

euvd dir_825 no fix

Source: OSV (Open Source Vulnerabilities)

Affects your stack

Affects 1 package in euvd

Checking this CVE against your own stacks and servers is part of the Basic plan and up.

Technical ContextAI · show details

A buffer overflow occurs when data written to a buffer exceeds its allocated size, potentially overwriting adjacent memory and corrupting program state.

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  • Exploit and PoC references, threat intelligence from 22 sources

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Severity by source

NVD PRIMARY 9.8 CRITICAL
AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Primary rating from NVD · only source for this CVE.

CVSS VectorNVD

Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
High
Availability
High

Lifecycle Timeline

2
PoC Detected
Jul 14, 2025 - 14:59 vuln.today
Public exploit code
CVE Published
Jul 09, 2025 - 00:15 nvd
CRITICAL 9.8

Executive ViewAI

Why It Matters

CVE-2025-7206 presents critical security risk, a buffer overflow vulnerability rated CVSS 9.8. Exploitation could allow attackers to corrupt memory, crash the application, or potentially execute arbitrary code. Proof-of-concept code is publicly available, increasing the risk of exploitation. Organizations should apply vendor updates immediately when available and implement compensating controls in the interim.

Business Impact: Severe
Compensating Controls

Apply vendor patch. If immediate patching is not feasible: (1) Implement network-level access controls to limit exposure; (2) Enable enhanced monitoring and alerting; (3) Apply principle of least privilege.

Threat Intelligence Overview

EPSS Score
0.5%
Top 32% exploitable
Exploit
POC
Public exploit code exists
Data Quality
6 sources
Confidence: High

How this decision was reached

The engine reads each signal below and applies a fixed list of rules from top to bottom. The first rule that matches sets the recommended action – like a statement, every line is shown.

SignalValue
Severity CRITICAL
CISA KEV No
Public POC Yes
EPSS 0.5%
Patch available No
Active threat No
Deciding rule
CRITICAL severity + public POC available
What every action level means
Emergency Immediate action required. Criteria: CRITICAL + in CISA KEV (actively exploited) without patch, OR CRITICAL + EPSS > 30% without patch, OR CRITICAL + active threat signals without patch.
Act Now Prioritize within 24-48h. Criteria: in KEV with patch available, OR CRITICAL + public POC, OR HIGH + EPSS > 10%, OR CRITICAL + active threat, OR any CRITICAL severity.
This Week Schedule remediation this week. Criteria: HIGH severity (CVSS 7.0-8.9). Patch within normal change window.
This Month Plan within 30 days. Criteria: MEDIUM severity (CVSS 4.0-6.9), lower exploitation probability. Include in regular patch cycle.
Monitor Track and reassess. Criteria: LOW severity (CVSS 0.1-3.9), minimal exploitation risk. No immediate action needed.

SSVC AssessmentENISA

SSVC Decision· derived
Out-of-Cycle
Exploitation· derived
Poc
System Exposure· derived
Open
Automatable· derived
Yes
Human Impact
Very High

Priority Score

70
Low Medium High Critical
KEV: 0
EPSS: +1
CVSS: +49
PoC: +20
Weaponized: 0
Threat intel: 0
Gov advisory: 0

Attack Technique

A buffer overflow occurs when a program writes more data to a memory buffer than it was allocated to hold, causing the excess data to spill into adjacent memory regions.

CVE-2019-16920 CRITICAL POC
9.8 Sep 27

Unauthenticated remote code execution occurs in D-Link products such as DIR-655C, DIR-866L, DIR-652, and DHP-1565. Rated

CVE-2025-6292 HIGH POC
8.8 Jun 20

CVE-2025-6292 is a critical stack-based buffer overflow vulnerability in D-Link DIR-825 routers (version 2.03 and potent

CVE-2025-6291 HIGH POC
8.8 Jun 20

CVE-2025-6291 is a critical stack-based buffer overflow vulnerability in D-Link DIR-825 firmware version 2.03, exploitab

CVE-2020-10216 HIGH POC
8.8 Mar 07

An issue was discovered on D-Link DIR-825 Rev.B 2.10 devices. Rated high severity (CVSS 8.8), this vulnerability is remo

CVE-2020-10215 HIGH POC
8.8 Mar 07

An issue was discovered on D-Link DIR-825 Rev.B 2.10 devices. Rated high severity (CVSS 8.8), this vulnerability is remo

CVE-2020-10214 HIGH POC
8.8 Mar 07

An issue was discovered on D-Link DIR-825 Rev.B 2.10 devices. Rated high severity (CVSS 8.8), this vulnerability is remo

CVE-2020-10213 HIGH POC
8.8 Mar 07

An issue was discovered on D-Link DIR-825 Rev.B 2.10 devices. Rated high severity (CVSS 8.8), this vulnerability is remo

CVE-2025-10666 HIGH POC
7.4 Sep 18

A security flaw has been discovered in D-Link DIR-825 up to 2.10. Rated high severity (CVSS 7.4), this vulnerability is

CVE-2022-29332 MEDIUM POC
6.5 May 17

D-LINK DIR-825 AC1200 R2 is vulnerable to Directory Traversal. Rated medium severity (CVSS 6.5), this vulnerability is r

CVE-2024-0717 MEDIUM POC
5.3 Jan 19

A vulnerability classified as critical was found in D-Link DAP-1360, DIR-300, DIR-615, DIR-615GF, DIR-615S, DIR-615T, DI

CVE-2021-29296 HIGH
7.5 Aug 10

Null Pointer Dereference vulnerability in D-Link DIR-825 2.10b02, which could let a remote malicious user cause a denial

CVE-2026-7068 HIGH
7.4 Apr 27

Stack-based buffer overflow in D-Link DIR-825 firmware 3.00b32's nmbd NetBIOS service allows adjacent network attackers

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