CVE-2021-41451
CVE-2021-41451 is a high-severity vulnerability in Tp-link Archer Ax10 Firmware with a CVSS 3.x base score of 7.5. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-444.
Key facts
- Severity: High (CVSS 3.x base score 7.5)
- CVSS v2: 5.0
- EPSS exploit prediction: 3% (87th percentile)
- Actively exploited: Not listed in CISA KEV
- Weakness: CWE-444
- Affected product: Tp-link Archer Ax10 Firmware
- Published:
- Last modified:
Description
A misconfiguration in HTTP/1.0 and HTTP/1.1 of the web interface in TP-Link AX10v1 before V1_211117 allows a remote unauthenticated attacker to send a specially crafted HTTP request and receive a misconfigured HTTP/0.9 response, potentially leading into a cache poisoning attack.
Frequently asked questions
- What is CVE-2021-41451?
- A misconfiguration in HTTP/1.0 and HTTP/1.1 of the web interface in TP-Link AX10v1 before V1_211117 allows a remote unauthenticated attacker to send a specially crafted HTTP request and receive a misconfigured HTTP/0.9 response, potentially leading into a cache poisoning attack.
- How severe is CVE-2021-41451?
- CVE-2021-41451 has a CVSS 3.x base score of 7.5, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is none, integrity none, and availability high.
- Is CVE-2021-41451 being actively exploited?
- It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 3% (87th percentile), an estimate of the probability of exploitation in the next 30 days.
- What products are affected by CVE-2021-41451?
- CVE-2021-41451 affects Tp-link Archer Ax10 Firmware. See the affected-products list for the exact vulnerable versions.
- How do I fix CVE-2021-41451?
- Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
- When was CVE-2021-41451 published?
- CVE-2021-41451 was published on 2021-12-17 and last updated on 2026-07-09.
References
Affected products (1)
- cpe:2.3:o:tp-link:archer_ax10_firmware:*:*:*:*:*:*:*:*
More vulnerabilities in Tp-link Archer Ax10 Firmware
- CVE-2023-34832 — Critical (CVSS 9.8): TP-Link Archer AX10(EU)_V1.2_230220 was discovered to contain a buffer overflow via the function FUN_131e8 - 0x132B4.
- CVE-2023-40357 — High (CVSS 8.0): Multiple TP-LINK products allow a network-adjacent authenticated attacker to execute arbitrary OS commands. Affected…
- CVE-2021-40288 — High (CVSS 7.5): A denial-of-service attack in WPA2, and WPA3-SAE authentication methods in TP-Link AX10v1 before V1_211014, allows a…
All CVEs affecting Tp-link Archer Ax10 Firmware →
Other CWE-444 (HTTP Request/Response Smuggling) vulnerabilities
- CVE-2025-1867 — Critical (CVSS 10.0): Inconsistent Interpretation of HTTP Requests ('HTTP Request/Response Smuggling') vulnerability in ithewei libhv allows…
- CVE-2022-22536 — Critical (CVSS 10.0): SAP NetWeaver Application Server ABAP, SAP NetWeaver Application Server Java, ABAP Platform, SAP Content Server 7.53…
- CVE-2018-3907 — Critical (CVSS 10.0): An exploitable vulnerability exists in the REST parser of video-core's HTTP server of the Samsung SmartThings Hub…
- CVE-2025-55315 — Critical (CVSS 9.9): Inconsistent interpretation of http requests ('http request/response smuggling') in ASP.NET Core allows an authorized…
- CVE-2020-15049 — Critical (CVSS 9.9): An issue was discovered in http/ContentLengthInterpreter.cc in Squid before 4.12 and 5.x before 5.0.3. A Request…
- CVE-2026-13763 — Critical (CVSS 9.8): Inconsistent interpretation of HTTP/2 requests in AWS Application Load Balancer with AWS WAF enabled might allow remote…
Browse all CWE-444 (HTTP Request/Response Smuggling) vulnerabilities →