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CVE-2026-17252 (GCVE-0-2026-17252)

Vulnerability from nvd – Published: 2026-08-21 17:16 – Updated: 2026-08-25 22:45

Title

Unauthenticated Denial of Service via Composed HTTP Parsing and Stack-Based Out-of-Bounds Write Vulnerability in TL-MR6400 Web Management Interface

Summary

A stack-based out-of-bounds write vulnerability exists in the login request handling functionality of the administrative web interface of TP-Link TL-MR6400 v7 routers. An unauthenticated adjacent attacker can trigger the vulnerability by sending a specially crafted malformed HTTP request. Successful exploitation may cause the web service process to crash, resulting in a denial-of-service condition and temporary loss of access to the router's web management interface.

Severity

7.1 (High)


                        
                          CVSS:4.0/AV:A/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N

SSVC

Exploitation: none Automatable: no Technical Impact: partial

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2026-08-21 17:38 UTC

CWE

CWE-787 - Out-of-bounds write

Assigner

TPLink mitre root

References

3 references

URL	Tags
https://www.tp-link.com/en/support/download/tl-mr…	patch
https://www.tp-link.com/tw/support/download/tl-mr…	patch
https://www.tp-link.com/us/support/faq/5259/	vendor-advisory

Impacted products

1 product

Vendor	Product	Version
TP-Link Systems Inc.	TL-MR6400 v7.0	Affected: 0 , < 1.9.0 Build 260714 (custom)

Show details on NVD website

JSON

To clipboard

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CVE-2026-17251 (GCVE-0-2026-17251)

Vulnerability from nvd – Published: 2026-08-21 17:16 – Updated: 2026-08-21 17:40

Title

Unauthenticated Denial of Service via Null Pointer Dereference in HTTP Request Parsing

Summary

A NULL pointer dereference vulnerability exists in the HTTP request parsing functionality of TL-MR6400 v7. An unauthenticated remote attacker can trigger the vulnerability by sending a specially crafted HTTP request containing a malformed session cookie header. Successful exploitation may cause the HTTP service process to crash, resulting in a denial-of-service condition and temporary loss of management or CGI functionality until service recovery.

Severity

7.1 (High)


                        
                          CVSS:4.0/AV:A/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N

SSVC

Exploitation: none Automatable: no Technical Impact: partial

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2026-08-21 17:40 UTC

CWE

CWE-476 - NULL pointer dereference

Assigner

TPLink mitre root

References

3 references

URL	Tags
https://www.tp-link.com/en/support/download/tl-mr…	patch
https://www.tp-link.com/tw/support/download/tl-mr…	patch
https://www.tp-link.com/us/support/faq/5259/	vendor-advisory

Impacted products

1 product

Vendor	Product	Version
TP-Link Systems Inc.	TL-MR6400 v7.0	Affected: 0 , < 1.9.0 Build 260714 (custom)

Credits

Rui Cheng Yu (Hina)

Show details on NVD website

JSON

To clipboard

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CVE-2026-17250 (GCVE-0-2026-17250)

Vulnerability from nvd – Published: 2026-08-21 17:16 – Updated: 2026-08-25 03:56

Title

Authenticated Remote Code Execution via Stack-Based Buffer Overflow in Firmware Update Handling

Summary

A stack-based buffer overflow vulnerability exists in the firmware update functionality of TL-MR6400 v7 due to unsafe processing of attacker-controlled metadata within a firmware image. Successful exploitation may allow an authenticated attacker to trigger memory corruption and execute arbitrary code on the affected device.

Severity

8.5 (High)


                        
                          CVSS:4.0/AV:A/AC:L/AT:N/PR:H/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N

SSVC

Exploitation: none Automatable: no Technical Impact: total

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2026-08-24 00:00 UTC

CWE

CWE-121 - Stack-based buffer overflow

Assigner

TPLink mitre root

References

3 references

URL	Tags
https://www.tp-link.com/en/support/download/tl-mr…	patch
https://www.tp-link.com/tw/support/download/tl-mr…	patch
https://www.tp-link.com/us/support/faq/5259/	vendor-advisory

Impacted products

1 product

Vendor	Product	Version
TP-Link Systems Inc.	TL-MR6400 v7.0	Affected: 0 , < 1.9.0 Build 260714 (custom)

Credits

Rui Cheng Yu (Hina)

Show details on NVD website

JSON

To clipboard

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CVE-2026-17252 (GCVE-0-2026-17252)

Vulnerability from cvelistv5 – Published: 2026-08-21 17:16 – Updated: 2026-08-25 22:45

Title

Unauthenticated Denial of Service via Composed HTTP Parsing and Stack-Based Out-of-Bounds Write Vulnerability in TL-MR6400 Web Management Interface

Summary

A stack-based out-of-bounds write vulnerability exists in the login request handling functionality of the administrative web interface of TP-Link TL-MR6400 v7 routers. An unauthenticated adjacent attacker can trigger the vulnerability by sending a specially crafted malformed HTTP request. Successful exploitation may cause the web service process to crash, resulting in a denial-of-service condition and temporary loss of access to the router's web management interface.

Severity

7.1 (High)


                        
                          CVSS:4.0/AV:A/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N

SSVC

Exploitation: none Automatable: no Technical Impact: partial

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2026-08-21 17:38 UTC

CWE

CWE-787 - Out-of-bounds write

Assigner

TPLink mitre root

References

3 references

URL	Tags
https://www.tp-link.com/en/support/download/tl-mr…	patch
https://www.tp-link.com/tw/support/download/tl-mr…	patch
https://www.tp-link.com/us/support/faq/5259/	vendor-advisory

Impacted products

1 product

Vendor	Product	Version
TP-Link Systems Inc.	TL-MR6400 v7.0	Affected: 0 , < 1.9.0 Build 260714 (custom)

Show details on NVD website

JSON

To clipboard

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CVE-2026-17251 (GCVE-0-2026-17251)

Vulnerability from cvelistv5 – Published: 2026-08-21 17:16 – Updated: 2026-08-21 17:40

Title

Unauthenticated Denial of Service via Null Pointer Dereference in HTTP Request Parsing

Summary

A NULL pointer dereference vulnerability exists in the HTTP request parsing functionality of TL-MR6400 v7. An unauthenticated remote attacker can trigger the vulnerability by sending a specially crafted HTTP request containing a malformed session cookie header. Successful exploitation may cause the HTTP service process to crash, resulting in a denial-of-service condition and temporary loss of management or CGI functionality until service recovery.

Severity

7.1 (High)


                        
                          CVSS:4.0/AV:A/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N

SSVC

Exploitation: none Automatable: no Technical Impact: partial

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2026-08-21 17:40 UTC

CWE

CWE-476 - NULL pointer dereference

Assigner

TPLink mitre root

References

3 references

URL	Tags
https://www.tp-link.com/en/support/download/tl-mr…	patch
https://www.tp-link.com/tw/support/download/tl-mr…	patch
https://www.tp-link.com/us/support/faq/5259/	vendor-advisory

Impacted products

1 product

Vendor	Product	Version
TP-Link Systems Inc.	TL-MR6400 v7.0	Affected: 0 , < 1.9.0 Build 260714 (custom)

Credits

Rui Cheng Yu (Hina)

Show details on NVD website

JSON

To clipboard

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CVE-2026-17250 (GCVE-0-2026-17250)

Vulnerability from cvelistv5 – Published: 2026-08-21 17:16 – Updated: 2026-08-25 03:56

Title

Authenticated Remote Code Execution via Stack-Based Buffer Overflow in Firmware Update Handling

Summary

A stack-based buffer overflow vulnerability exists in the firmware update functionality of TL-MR6400 v7 due to unsafe processing of attacker-controlled metadata within a firmware image. Successful exploitation may allow an authenticated attacker to trigger memory corruption and execute arbitrary code on the affected device.

Severity

8.5 (High)


                        
                          CVSS:4.0/AV:A/AC:L/AT:N/PR:H/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N

SSVC

Exploitation: none Automatable: no Technical Impact: total

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2026-08-24 00:00 UTC

CWE

CWE-121 - Stack-based buffer overflow

Assigner

TPLink mitre root

References

3 references

URL	Tags
https://www.tp-link.com/en/support/download/tl-mr…	patch
https://www.tp-link.com/tw/support/download/tl-mr…	patch
https://www.tp-link.com/us/support/faq/5259/	vendor-advisory

Impacted products

1 product

Vendor	Product	Version
TP-Link Systems Inc.	TL-MR6400 v7.0	Affected: 0 , < 1.9.0 Build 260714 (custom)

Credits

Rui Cheng Yu (Hina)

Show details on NVD website

JSON

To clipboard

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Find a vulnerability

Search criteria

6 vulnerabilities found for TL-MR6400 v7.0 by TP-Link Systems Inc.

CVE-2026-17252 (GCVE-0-2026-17252)

CVE-2026-17251 (GCVE-0-2026-17251)

CVE-2026-17250 (GCVE-0-2026-17250)

CVE-2026-17252 (GCVE-0-2026-17252)

CVE-2026-17251 (GCVE-0-2026-17251)

CVE-2026-17250 (GCVE-0-2026-17250)