CVE-2021-27570Public exploitNetwork attack vector

Unauthenticated process termination via clo command

Published May 7, 2021 · Updated Aug 3, 2024

Missing authentication in Emote Remote Mouse 3.015 and earlier allows remote attackers to terminate any named Windows process. The TCP command handler on port 1979 accepts an unauthenticated clo message, resolves its supplied name with Process.GetProcessesByName, and calls Kill on every match except Explorer. Network access to the server is sufficient; targeting a critical process interrupts the associated application or service.

CVSS severity5.3
Medium
EPSS probability1.39%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Missing authentication in Emote Remote Mouse 3.015 and earlier allows remote attackers to terminate any named Windows process. The TCP command handler on port 1979 accepts an unauthenticated clo message, resolves its supplied name with Process.GetProcessesByName, and calls Kill on every match except Explorer. Network access to the server is sufficient; targeting a critical process interrupts the associated application or service.

The record

CVE
CVE-2021-27570
Published
May 7, 2021
Updated
Aug 3, 2024
Vendor
Unknown vendor
Product
Unknown product
Classifications
CWE-306, T1489
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. May 7, 2021CVE publishedPublication date reported by the CVE source.
  2. Aug 3, 2024Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Affected buildAffected product and version details are unavailable.

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Affected products and versions are unavailable in this record.

Published CVSS scores

5.0NIST National Vulnerability DatabaseAV:N/AC:L/Au:N/C:N/I:N/A:P
5.3NIST National Vulnerability DatabaseCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L

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.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

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-306Missing Authentication for Critical Function
T1489Service Stop

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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