CVE-2020-37085Public exploitNetwork attack vector

Unauthenticated service crash via oversized Thrift string

Published Feb 3, 2026 · Updated Feb 3, 2026

Denial of service in Sunnysidesoft VirtualTablet Server 3.0.2 allows remote attackers to crash the service through a Thrift request. The send_say() method accepts an oversized string without enforcing a length or resource limit, leaving the server unresponsive. No authentication or user interaction is required; the demonstrated consequence is loss of service availability, not data access or modification.

CVSS severity8.7
High
EPSS probability0.35%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Denial of service in Sunnysidesoft VirtualTablet Server 3.0.2 allows remote attackers to crash the service through a Thrift request. The send_say() method accepts an oversized string without enforcing a length or resource limit, leaving the server unresponsive. No authentication or user interaction is required; the demonstrated consequence is loss of service availability, not data access or modification.

The record

CVE
CVE-2020-37085
Published
Feb 3, 2026
Updated
Feb 3, 2026
Vendor
Sunnysidesoft
Product
VirtualTablet Server
Classifications
CWE-770, T1499.004
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Feb 3, 2026CVE publishedPublication date reported by the CVE source.
  2. Feb 3, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=3.0.2

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Sunnysidesoft · VirtualTablet Serverversion=3.0.2

Published CVSS scores

8.7VulnCheckCVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N
7.5VulnCheckCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

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No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-770Allocation of Resources Without Limits or Throttling
T1499.004Application or System Exploitation

Public exploit references

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Technologies

Your stack

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Your stack

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