What is the CVSS score of CVE-2026-27513?

CVE-2026-27513 has a CVSS 3.1 base score of 4.3 (Medium). CVSS vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:N. EPSS exploitation probability: 0.0%.

How to fix or mitigate CVE-2026-27513?

Within 30 days: Identify affected systems and apply vendor patches as part of regular patch cycle. Verify anti-CSRF tokens are enforced.

F3 Firmware CVE-2026-27513

MEDIUM

Cross-Site Request Forgery (CSRF) (CWE-352)

2026-02-23 disclosure@vulncheck.com

CSRF Tenda F3 Firmware

4.3

CVSS 3.1 · NVD

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Vulnerability Assessment

Weakness	CWE CWE-352 OWASP Top 10:2025 A01:2025 - Broken Access Control ASVS 5.0 V3 - Web Frontend Security Anti-CSRF tokens, SameSite cookies MITRE ATT&CK 1 technique across 1 tactic: Initial Access 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 4.3 (MEDIUM). Attack vector: Network. Complexity: Low. Privileges required: None. User interaction: Required. Exploitation no authentication required.
Exploit ScenarioDerived	An attacker without authentication could exploit this vulnerability to unauthorized configuration changes.

This Month Plan within 30 days. Why: MEDIUM severity (CVSS 4.0-6.9).

No patch listed yet 0.0% exploitation probability (EPSS)

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AnalysisAIv1 – Mar 12, 2026

The Tenda F3 Wireless Router firmware lacks CSRF protections in its administrative interface, enabling attackers to trick authenticated administrators into making unauthorized configuration changes through crafted requests. An unauthenticated attacker can exploit this to modify router settings by socially engineering an admin into visiting a malicious webpage. No patch is currently available for this vulnerability.

Earlier versions of this analysis (1)

v1 Mar 12, 2026 - 21:55 CVSS 4.3

Shenzhen Tenda F3 Wireless Router firmware V12.01.01.55_multi contains a cross-site request forgery (CSRF) vulnerability in the web-based administrative interface. [CVSS 4.3 MEDIUM]

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

Classified as CWE-352 (Cross-Site Request Forgery (CSRF)). Affects the web-based administrative component of F3 Firmware. Shenzhen Tenda F3 Wireless Router firmware V12.01.01.55_multi contains a cross-site request forgery (CSRF) vulnerability in the web-based administrative interface. The interface does not implement anti-CSRF protections, allowing an attacker to induce an authenticated administrator to submit state-changing requests, which can result in unauthorized configuration changes.

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Exploit and PoC references, threat intelligence from 22 sources

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Severity by source

NVD PRIMARY 4.3 MEDIUM

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

Primary rating from NVD · only source for this CVE.

CVSS VectorNVD

Attack Vector

Network

Attack Complexity

Low

Privileges Required

None

User Interaction

Required

Scope

Unchanged

Confidentiality

None

Integrity

Low

Availability

None

DescriptionCVE.org

Shenzhen Tenda F3 Wireless Router firmware V12.01.01.55_multi contains a cross-site request forgery (CSRF) vulnerability in the web-based administrative interface. The interface does not implement anti-CSRF protections, allowing an attacker to induce an authenticated administrator to submit state-changing requests, which can result in unauthorized configuration changes.

Executive ViewAI

Why It Matters

Organizations using Shenzhen Tenda F3 Wireless Router firmware V12.01.01.55_multi should be aware of moderate risk from CVE-2026-27513, a cross-site request forgery vulnerability rated CVSS 4.3. Users could be tricked into performing unintended actions. Organizations should apply vendor updates when available and monitor for exploitation.

Business Impact: Low

Compensating Controls

Apply vendor patch. If patching is delayed: implement SameSite cookie attributes and anti-CSRF tokens.

Threat Intelligence Overview

EPSS Score

0.0%

Top 97% exploitable

Data Quality

3 sources

Confidence: Low

NVD

CVE.org

EPSS

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 MEDIUM

CISA KEV No

Public POC No

EPSS 0.0%

Patch available No

Active threat No

Deciding rule

MEDIUM severity (CVSS 4.0-6.9)

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.