CVE-2020-37070Public exploitNetwork attack vectorHinoki check available

Unauthenticated code execution via TCP buffer overflow

Published Feb 3, 2026 · Updated Feb 3, 2026

A stack buffer overflow in CloudMe 1.11.2 allows remote attackers to execute arbitrary code via a crafted TCP packet to port 8888. The service accepts an oversized payload that overwrites its structured exception handler, and a ROP chain makes injected code executable. Exploitation requires the CloudMe service to be running and reachable; the public exploit targets loopback on 32-bit Windows 7.

CVSS severity9.8
Critical
EPSS probability0.47%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkAvailable
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Summary

What happened

A stack buffer overflow in CloudMe 1.11.2 allows remote attackers to execute arbitrary code via a crafted TCP packet to port 8888. The service accepts an oversized payload that overwrites its structured exception handler, and a ROP chain makes injected code executable. Exploitation requires the CloudMe service to be running and reachable; the public exploit targets loopback on 32-bit Windows 7.

The record

CVE
CVE-2020-37070
Published
Feb 3, 2026
Updated
Feb 3, 2026
Vendor
Agora Foundation
Product
CloudMe
Classifications
CWE-120, T1190
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=1.11.2

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Agora Foundation · CloudMeversion=1.11.2

Published CVSS scores

8.6VulnCheckCVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N
9.8VulnCheckCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/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-120Buffer Copy without Checking Size of Input ('Classic Buffer Overflow')
T1190Exploit Public-Facing Application

Public exploit references

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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