What is the CVSS score of CVE-2025-67445?

CVE-2025-67445 has a CVSS 3.1 base score of 7.5 (High). CVSS vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H. EPSS exploitation probability: 0.1%.

Is there a public PoC exploit available for CVE-2025-67445?

Yes, a public proof-of-concept exploit is available for CVE-2025-67445. Prioritise patching immediately. EPSS: 0.1%.

How to fix or mitigate CVE-2025-67445?

Within 24 hours: Identify all X5000R devices running firmware versions up to 9.1.0cu.2415_b20250515 and assess network exposure. Within 7 days: Implement network segmentation to restrict access to affected devices and enable resource monitoring/alerting. Within 30 days: Maintain vendor contact for patch ETA; evaluate firmware upgrade paths or device replacement if patch remains unavailable.

X5000r Firmware CVE-2025-67445

HIGH

Uncontrolled Resource Consumption (CWE-400)

2026-02-24 cve@mitre.org

Denial Of Service X5000r Firmware TOTOLINK

7.5

CVSS 3.1 · NVD

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Vulnerability Assessment

Weakness	CWE CWE-400 OWASP Top 10:2025 A06:2025 - Insecure Design ASVS 5.0 V2 - Validation and Business Logic Resource consumption limits MITRE ATT&CK 1 technique across 1 tactic: Impact The technique list with ATT&CK links and the kill-chain view is part of the Basic plan and up. Sign in to read
Impact	CVSS 7.5 (HIGH). Attack vector: Network. Complexity: Low. Privileges required: None. User interaction: None. Public exploit/POC available.
Exploit ScenarioDerived	An attacker could exploit this flaw, a crash of the management CGI and loss of availability of th.

This Week Schedule remediation this week. Why: HIGH severity (CVSS 7.0-8.9).

No patch listed yet 0.1% exploitation probability (EPSS)

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AnalysisAIv1 – Mar 12, 2026

X5000R Firmware versions up to 9.1.0cu.2415_b20250515 is affected by uncontrolled resource consumption (CVSS 7.5).

RemediationAI

Monitor vendor advisories for a patch. Restrict network access to the affected service where possible.

Affects your stack

Find out whether the stacks and servers you run are on an affected version.

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

Technical ContextAI · show details

This vulnerability (CWE-400: Uncontrolled Resource Consumption) affects X5000R Firmware. TOTOLINK X5000R V9.1.0cu.2415_B20250515 contains a denial-of-service vulnerability in /cgi-bin/cstecgi.cgi. The CGI reads the CONTENT_LENGTH environment variable and allocates memory using malloc (CONTENT_LENGTH + 1) without sufficient bounds checking. When lighttpd s request size limit is not enforced, a crafted large POST request can cause memory exhaustion or a segmentation fault, leading to a crash of the management CGI and loss of availability of the web interface.

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Exploit and PoC references, threat intelligence from 22 sources

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Severity by source

NVD PRIMARY 7.5 HIGH

AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/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

None

Integrity

None

Availability

High

Lifecycle Timeline

PoC Detected

Feb 27, 2026 - 19:16 vuln.today

Public exploit code

CVE Published

Feb 24, 2026 - 15:21 nvd

HIGH 7.5

DescriptionNVD

TOTOLINK X5000R V9.1.0cu.2415_B20250515 contains a denial-of-service vulnerability in /cgi-bin/cstecgi.cgi. The CGI reads the CONTENT_LENGTH environment variable and allocates memory using malloc (CONTENT_LENGTH + 1) without sufficient bounds checking. When lighttpd s request size limit is not enforced, a crafted large POST request can cause memory exhaustion or a segmentation fault, leading to a crash of the management CGI and loss of availability of the web interface.

Executive ViewAI

Why It Matters

A high-severity vulnerability in X5000R firmware allows attackers to exhaust system resources, potentially causing service disruptions. Organizations running affected firmware versions should immediately assess their exposure and implement interim protections, as no vendor patch is currently available.

Business Impact: High

Compensating Controls

Implement network segmentation to limit device accessibility; deploy rate-limiting and connection throttling at network perimeter; enable resource consumption monitoring and alerting; disable unnecessary X5000R services/features if feasible; maintain incident response procedures for potential DoS events; consider WAF/IDS rules to detect resource exhaustion patterns.

Threat Intelligence Overview

EPSS Score

0.1%

Top 70% exploitable

Exploit

POC

Public exploit code exists

Data Quality

4 sources

Confidence: Medium

NVD

CVE.org

EPSS

GitHub

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 HIGH

CISA KEV No

Public POC Yes

EPSS 0.1%

Patch available No

Active threat No

Deciding rule

HIGH severity (CVSS 7.0-8.9)

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

High

Priority Score

Low Medium High Critical

KEV: 0

EPSS: 0

CVSS: +38

PoC: +20

Weaponized: 0

Threat intel: 0

Gov advisory: 0

Attack Technique

Denial of Service MEDIUM

Denial of Service attacks render applications or systems unavailable by overwhelming resources or triggering failure conditions.

Affected Products (CPE)NVD

cpe:2.3:o:totolink:x5000r_firmware:9.1.0cu.2415_b20250515:*:*:*:*:*:*:*

More in X5000r Firmware

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9.8 May 05

TOTOLINK X5000R V9.1.0u.6118_B20201102 and V9.1.0u.6369_B20230113 contain a command insertion vulnerability in setting/s

CVE-2025-13184 CRITICAL Emergency POC

9.8 Dec 10

Unauthenticated remote attackers can enable Telnet on TOTOLINK X5000R AX1800 routers running firmware V9.1.0u.6369_B2023

CVE-2023-31569 CRITICAL Act Now POC

9.8 Jun 06

TOTOLINK X5000R V9.1.0cu.2350_B20230313 was discovered to contain a command injection via the setWanCfg function. Rated

CVE-2025-70327 CRITICAL Act Now POC

9.8 Feb 23

Argument injection in TOTOLINK X5000R router v9.1.0cu via setDiagnosisCfg handler allows unauthenticated remote code exe

CVE-2024-32353 CRITICAL Act Now POC

9.8 May 14

TOTOLINK X5000R V9.1.0cu.2350_B20230313 was discovered to contain a command injection vulnerability via the 'port' param

CVE-2024-28639 CRITICAL Act Now POC

9.8 Mar 16

Buffer Overflow vulnerability in TOTOLink X5000R V9.1.0u.6118-B20201102 and A7000R V9.1.0u.6115-B20201022, allow remote

CVE-2023-6612 CRITICAL Act Now POC

9.8 Dec 08

A vulnerability was found in Totolink X5000R 9.1.0cu.2300_B20230112. Rated critical severity (CVSS 9.8), this vulnerabil

CVE-2023-45984 CRITICAL Act Now POC

9.8 Oct 16

TOTOLINK X5000R V9.1.0u.6118_B20201102 and TOTOLINK A7000R V9.1.0u.6115_B20201022 was discovered to contain a stack over

CVE-2023-36950 CRITICAL Act Now POC

9.8 Oct 16

TOTOLINK X5000R V9.1.0u.6118_B20201102 and TOTOLINK A7000R V9.1.0u.6115_B20201022 was discovered to contain a stack over

CVE-2023-36947 CRITICAL Act Now POC

9.8 Oct 16

TOTOLINK X5000R V9.1.0u.6118_B20201102 and TOTOLINK A7000R V9.1.0u.6115_B20201022 was discovered to contain a stack over

CVE-2023-39618 CRITICAL Act Now POC

9.8 Aug 21

TOTOLINK X5000R B20210419 was discovered to contain a remote code execution (RCE) vulnerability via the setTracerouteCfg

CVE-2023-39617 CRITICAL Act Now POC

9.8 Aug 21

TOTOLINK X5000R_V9.1.0cu.2089_B20211224 and X5000R_V9.1.0cu.2350_B20230313 were discovered to contain a remote code exec

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References

Advisories & patches

REF http://totolink.com

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