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    CVE-2026-3622

    The vulnerability exists in the UPnP component of TL-WR841N v14, where improper input validation leads to an out-of-bounds read, potentially causing a crash of the UPnP service. Successful exploitation can cause the UPnP service to crash, resulting in a Denial-of-Service condition.  This vulnerability affects TL-WR841N v14 < EN_0.9.1 4.19 Build 260303 Rel.42399n (V14_260303) and < US_0.9.1.4.19 Build 260312 Rel. 49108n (V14_0304).

    Published:Mar 26, 2026
    Last Modified:Apr 2, 2026
    EPS:Mar 26, 2026
    EPSS Score:0.00046
    CVSS Score:7.5

    Affected Products

    Vendor
    Tp-link
    Product
    Tl-wr841n
    Vendor
    Tp-link
    Product
    Tl-wr841n Firmware
    Vendor
    Tp-link
    Product
    Tl-wr841n V14

    Exploits

    No exploit reference

    Common Weakness Enumeration

    CWE-125 Out-of-bounds Read

    Common Attack Pattern Enumeration and Classification (CAPEC)

    CAPEC-540 Overread Buffers

    Related CVEs

    CVE-2026-5039 (CVSS 6.1) — TP-Link TL-WR841N v13 uses DES-CBC encryption in the TDDPv2 debug protocol with a cryptographic key derived fr…
    CVE-2026-3227 (CVSS 8.5) — A command injection vulnerability was identified in TP-Link TL-WR802N v4, TL-WR841N v14, and TL-WR840N v6 due …
    CVE-2025-9014 (CVSS 6.3) — A Null Pointer Dereference vulnerability exists in the referer header check of the web portal of TP-Link TL-WR…
    CVE-2025-9377 (CVSS 8.6) — The authenticated remote command execution (RCE) vulnerability exists in the Parental Control page on TP-Link…
    CVE-2025-53715 (CVSS 6.9) — A vulnerability has been found in TP-Link TL-WR841N V11. The vulnerability exists in the /userRpm/Wan6to4Tunne…
    CVE-2025-53714 (CVSS 6.9) — A vulnerability has been found in TP-Link TL-WR841N V11. The vulnerability exists in the /userRpm/WzdWlanSiteS…
    CVE-2025-53713 (CVSS 6.9) — A vulnerability has been found in TP-Link TL-WR841N V11. The vulnerability exists in the /userRpm/WlanNetworkR…
    CVE-2025-53712 (CVSS 6.9) — A vulnerability has been found in TP-Link TL-WR841N V11. The vulnerability exists in the /userRpm/WlanNetworkR…
    CVE-2025-53711 (CVSS 6.9) — A vulnerability has been found in TP-Link TL-WR841N v11, TL-WR842ND v2 and TL-WR494N v3. The vulnerability exi…
    CVE-2023-50224 (CVSS 6.5) — TP-Link TL-WR841N dropbearpwd Improper Authentication Information Disclosure Vulnerability. This vulnerability…

    Common Vulnerability Scoring System

    Attack Vector
    Network
    Adjacent
    Local
    Physical
    Privileges Required
    None
    Low
    High
    User Interaction
    None
    Required
    Scope
    Unchanged
    Changed
    Confidentiality
    None
    Low
    High
    Integrity
    None
    Low
    High
    Availability
    None
    Low
    High