CVE-2020-37085
Published: 03 February 2026
Summary
CVE-2020-37085 is a high-severity Allocation of Resources Without Limits or Throttling (CWE-770) vulnerability in Sunnysidesoft (inferred from references). Its CVSS base score is 7.5 (High).
Operationally, ranked at the 17.5th percentile by exploit likelihood (below the median); it is not currently listed in the CISA KEV catalog; a public proof-of-concept is referenced.
Threat & Defense Details
Likely Mitigating ControlsAI
Per-CVE control mapping for this CVE has not run yet; the list below is derived from the weakness types (CWEs) cited in the NVD entry.
This control implements explicit throttling on session allocation, addressing the weakness of allocating resources without limits.
Plan testing exercises resource allocation limits and throttling during simulated failures, directly addressing weaknesses that allow unbounded resource use.
Contingency plan updates ensure recovery strategies address unbounded resource allocation, making it harder for attackers to exploit lack of throttling to cause prolonged outages.
Provides continuity when unbounded resource allocation at the primary site leads to exhaustion and downtime.
Alternate services allow operations to continue when primary allocation of resources lacks limits or throttling.
Explicit planning of security-related actions requires defining limits, windows, and resource allocations, making allocation without throttling far less likely.
Measures of performance include tracking allocation behavior and throttling effectiveness, reducing the window for resource exhaustion attacks.
Imposes an inactivity-based limit on network resource allocation, throttling the number of concurrently held connections.
NVD Description
VirtualTablet Server 3.0.2 contains a denial of service vulnerability that allows attackers to crash the service by sending oversized string payloads through the Thrift protocol. Attackers can exploit the vulnerability by sending a long string to the send_say() method, causing…
more
the server to become unresponsive.
Deeper analysisAI
CVE-2020-37085 is a denial of service vulnerability in VirtualTablet Server version 3.0.2. The flaw allows attackers to crash the service by sending oversized string payloads through the Thrift protocol, specifically targeting the send_say() method, which causes the server to become unresponsive. It is classified under CWE-770 (Allocation of Resources Without Limits or Throttling) and carries a CVSS v3.1 base score of 7.5 (AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H).
The vulnerability is exploitable by any unauthenticated attacker with network access, requiring low attack complexity and no user interaction. Exploitation involves transmitting a long string to the vulnerable method, resulting in a complete denial of service where the server crashes and stops responding, with high impact on availability but no effects on confidentiality or integrity.
Advisories and references highlight the issue through a VulnCheck advisory on the VirtualTablet Server denial-of-service PoC, an Exploit-DB entry (48402) with an exploit, and the vendor site at sunnysidesoft.com. These resources provide proof-of-concept details but do not specify patches or mitigations in the available information.
Details
- CWE(s)