CVE-2020-5734Public exploitNetwork attack vector

Unauthenticated service crash via unchecked key length

Published Apr 7, 2020 · Updated Aug 4, 2024

Classic buffer overflow in SolarWinds Dameware Mini Remote Control 12.1 Hotfix 3 allows remote attackers to crash DWRCS.exe. DWRCRSA.dll passes the attacker-controlled SigPubkeyLen value to memcpy without enforcing the 0x800-byte destination limit, causing a stack over-read and heap overwrite. When the DWRCS.exe Allow only FIPS Mode setting is enabled, an unauthenticated connection to TCP port 6129 can terminate the remote-control service.

CVSS severity7.5
High
EPSS probability25.15%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Classic buffer overflow in SolarWinds Dameware Mini Remote Control 12.1 Hotfix 3 allows remote attackers to crash DWRCS.exe. DWRCRSA.dll passes the attacker-controlled SigPubkeyLen value to memcpy without enforcing the 0x800-byte destination limit, causing a stack over-read and heap overwrite. When the DWRCS.exe Allow only FIPS Mode setting is enabled, an unauthenticated connection to TCP port 6129 can terminate the remote-control service.

The record

CVE
CVE-2020-5734
Published
Apr 7, 2020
Updated
Aug 4, 2024
Vendor
SolarWinds
Product
Dameware Mini Remote Control
Classifications
CWE-120, T1499.004
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Apr 7, 2020CVE publishedPublication date reported by the CVE source.
  2. Aug 4, 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?

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

  1. Affected versionversion=12.1 Hotfix 3

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

SolarWinds · Dameware Mini Remote Controlversion=12.1 Hotfix 3

Published CVSS scores

7.1TenableAV:N/AC:M/Au:N/C:N/I:N/A:C
4.3NIST NVDAV:N/AC:M/Au:N/C:N/I:N/A:P
7.5NIST NVDCVSS: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.

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

No observations available

Sep 9, 2026Sep 15, 2026
Latest reporting daySep 15, 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')
T1499.004Endpoint Denial of Service: Application or System Exploitation

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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