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Tl Wr840N Firmware CVE-2014-9510

MEDIUM
Cross-Site Request Forgery (CSRF) (CWE-352)
2015-01-09 cve@mitre.org
CSRF TP-Link Tl Wr840N Firmware
6.8
CVSS 2.0 · 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.

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Impact

CVSS score of 6.8 (MEDIUM). Attack characteristics: network attack vector, M complexity. EPSS exploitation probability: 0.13%.
Exploit ScenarioDerived

A remote attacker could trick authenticated users into performing unintended actions by sending crafted requests to the affected application.
This Month Plan within 30 days. Why: MEDIUM severity (CVSS 4.0-6.9).
Patch available 0.1% exploitation probability (EPSS)

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AnalysisAI

Cross-site request forgery (CSRF) vulnerability in the administration console in TP-Link TL-WR840N (V1) router with firmware before 3.13.27 build 141120 allows remote attackers to hijack the. Rated medium severity (CVSS 6.8), this vulnerability is remotely exploitable.

RemediationAI

A vendor patch is available. Apply the latest security update as soon as possible. Implement anti-CSRF tokens, validate Origin/Referer headers, use SameSite cookie attribute.

Affects your stack

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Technical ContextAI · show details

This vulnerability is classified as Cross-Site Request Forgery (CSRF) (CWE-352), which allows attackers to trick authenticated users into performing unintended actions. Cross-site request forgery (CSRF) vulnerability in the administration console in TP-Link TL-WR840N (V1) router with firmware before 3.13.27 build 141120 allows remote attackers to hijack the authentication of administrators for requests that change router settings via a configuration file import. Affected products include: Tp-Link Tl-Wr840N Firmware. Version information: before 3.13.27.

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  • Exploit and PoC references, threat intelligence from 22 sources
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Severity by source

NVD PRIMARY 6.8 MEDIUM
AV:N/AC:M/Au:N/C:P/I:P/A:P

Primary rating from NVD · only source for this CVE.

CVSS VectorNVD

Attack Vector
Network
Attack Complexity
M
Confidentiality
P
Integrity
P
Availability
P

DescriptionCVE.org

Cross-site request forgery (CSRF) vulnerability in the administration console in TP-Link TL-WR840N (V1) router with firmware before 3.13.27 build 141120 allows remote attackers to hijack the authentication of administrators for requests that change router settings via a configuration file import.

Threat Intelligence Overview

EPSS Score
0.1%
Top 68% 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 0.1%
Patch available Yes
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.

SSVC AssessmentENISA

SSVC Decision· derived
Scheduled
Exploitation· derived
None
System Exposure· derived
Open
Automatable· derived
No
Human Impact· derived
Medium

Priority Score

34
Low Medium High Critical
KEV: 0
EPSS: 0
CVSS: +34
PoC: 0
Weaponized: 0
Threat intel: 0
Gov advisory: 0

Attack Technique

Cross-Site Request Forgery MEDIUM

Cross-Site Request Forgery exploits the automatic credential inclusion behavior of web browsers.

Affected Products (CPE)CVE.org

cpe:2.3:o:tp-link:tl-wr840n_firmware:3.13.27:*:*:*:*:*:*:*

More in Tl Wr840N Firmware

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CVE-2021-41653 CRITICAL POC
9.8 Nov 13

The PING function on the TP-Link TL-WR840N EU v5 router with firmware through TL-WR840N(EU)_V5_171211 is vulnerable to r
CVE-2022-25061 CRITICAL POC
9.8 Feb 25

TP-LINK TL-WR840N(ES)_V6.20_180709 was discovered to contain a command injection vulnerability via the component oal_set
CVE-2022-25060 CRITICAL POC
9.8 Feb 25

TP-LINK TL-WR840N(ES)_V6.20_180709 was discovered to contain a command injection vulnerability via the component oal_sta
CVE-2022-25064 CRITICAL POC
9.8 Feb 25

TP-LINK TL-WR840N(ES)_V6.20_180709 was discovered to contain a remote code execution (RCE) vulnerability via the functio
CVE-2018-11714 CRITICAL POC
9.8 Jun 04

An issue was discovered on TP-Link TL-WR840N v5 00000005 0.9.1 3.16 v0001.0 Build 170608 Rel.58696n and TL-WR841N v13 00
CVE-2019-15060 HIGH POC
8.8 Aug 22

The traceroute function on the TP-Link TL-WR840N v4 router with firmware through 0.9.1 3.16 is vulnerable to remote code
CVE-2018-15172 HIGH POC
7.5 Aug 15

TP-Link WR840N devices have a buffer overflow via a long Authorization HTTP header. Rated high severity (CVSS 7.5), this
CVE-2022-26642 HIGH POC
7.2 Mar 28

TP-LINK TL-WR840N(ES)_V6.20 was discovered to contain a buffer overflow via the X_TP_ClonedMACAddress parameter. Rated h
CVE-2022-26641 HIGH POC
7.2 Mar 28

TP-LINK TL-WR840N(ES)_V6.20 was discovered to contain a buffer overflow via the httpRemotePort parameter. Rated high sev
CVE-2022-26640 HIGH POC
7.2 Mar 28

TP-LINK TL-WR840N(ES)_V6.20 was discovered to contain a buffer overflow via the minAddress parameter. Rated high severit
CVE-2022-26639 HIGH POC
7.2 Mar 28

TP-LINK TL-WR840N(ES)_V6.20 was discovered to contain a buffer overflow via the DNSServers parameter. Rated high severit
CVE-2022-29402 MEDIUM POC
6.8 May 25

TP-Link TL-WR840N EU v6.20 was discovered to contain insecure protections for its UART console. Rated medium severity (C

Same weakness CWE-352 – Cross-Site Request Forgery (CSRF)

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References

Advisories & patches
PATCH http://www.tp-link.com/en/support/download/?model=TL-WR840N&version=V1 REF http://seclists.org/fulldisclosure/2015/Jan/14 REF http://www.secureworks.com/cyber-threat-intelligence/advisories/SWRX-2015-001/ REF http://www.securityfocus.com/bid/71913

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