TP-Link WR940N/WR941ND Uninitialized Pointer Vulnerability

EIP-9ad27c94

An uninitialized pointer vulnerability exists within TP-Link’s WR940N and WR941ND SOHO router devices specifically during the processing of UPnP/SOAP SUBSCRIBE requests. Successful exploitation allow local unauthenticated attackers the ability to execute arbitrary code under the context of the ‘root’ user.

Vulnerability Identifiers

• Exodus Intelligence: EIP-9ad27c94
• MITRE CVE: TBD

Vulnerability Metrics

• CVSSv2 Score: 8.3

Vendor References

• 940N V5: https://www.tp-link.com/us/support/download/tl-wr940n/v5/#Firmware
• 941ND V6: https://www.tp-link.com/us/support/download/tl-wr941nd/#Firmware

Discovery Credit

• Exodus Intelligence

Disclosure Timeline

• Disclosed to affected vendor: December 10th, 2021
• Disclosed to public: June 23rd, 2022

Further Information

Readers of this advisory who are interested in receiving further details around the vulnerability, mitigations, detection guidance, and more can contact us at [email protected].

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