CVE Feed

    Dashboard / CVE / CVE-2025-4444

    CVE-2025-4444

    A security flaw has been discovered in Tor up to 0.4.7.16/0.4.8.17. Impacted is an unknown function of the component Onion Service Descriptor Handler. Performing manipulation results in resource consumption. The attack may be initiated remotely. The attack's complexity is rated as high. The exploitability is considered difficult. Upgrading to version 0.4.8.18 and 0.4.9.3-alpha is recommended to address this issue. It is recommended to upgrade the affected component.

    Published:Sep 18, 2025
    Last Modified:Apr 15, 2026
    EPS:Sep 18, 2025
    EPSS Score:0.00065
    CVSS Score:3.7

    Affected Products

    Vendor
    Tor
    Product
    Tor

    Exploits

    No exploit reference

    Related CVEs

    CVE-2012-3517 (CVSS 5) — Use-after-free vulnerability in dns.c in Tor before 0.2.2.38 might allow remote attackers to cause a denial of…
    CVE-2012-3518 (CVSS 5) — The networkstatus_parse_vote_from_string function in routerparse.c in Tor before 0.2.2.38 does not properly ha…
    CVE-2012-3519 (CVSS 5) — routerlist.c in Tor before 0.2.2.38 uses a different amount of time for relay-list iteration depending on whic…
    CVE-2011-4894 (CVSS 4.3) — Tor before 0.2.2.34, when configured as a bridge, uses direct DirPort access instead of a Tor TLS connection f…
    CVE-2011-2769 (CVSS 4.3) — Tor before 0.2.2.34, when configured as a bridge, accepts the CREATE and CREATE_FAST values in the Command fie…
    CVE-2011-4895 (CVSS 4.3) — Tor before 0.2.2.34, when configured as a bridge, sets up circuits through a process different from the proces…
    CVE-2011-4897 (CVSS 4.3) — Tor before 0.2.2.25-alpha, when configured as a relay without the Nickname configuration option, uses the loca…
    CVE-2011-2778 (CVSS 7.6) — Multiple heap-based buffer overflows in Tor before 0.2.2.35 allow remote attackers to cause a denial of servic…
    CVE-2011-4896 (CVSS 4.3) — Tor before 0.2.2.24-alpha continues to use a reachable bridge that was previously configured but is not curren…
    CVE-2011-2768 (CVSS 5.8) — Tor before 0.2.2.34, when configured as a client or bridge, sends a TLS certificate chain as part of an outgoi…

    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