CVE-2022-36781Network attack vector

Unauthorized access via unthrottled custom token guessing

Published Sep 28, 2022 · Updated Sep 16, 2024

Improper rate limiting in ConnectWise ScreenConnect 22.6 and earlier allows remote attackers to gain access by guessing custom access tokens. The default configuration fails to throttle repeated custom access-token submissions, allowing exhaustive access-code attempts. No authentication or user interaction is required, and a successful guess grants unauthorized access to the protected resource.

CVSS severity5.3
Medium
EPSS probability0.52%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Improper rate limiting in ConnectWise ScreenConnect 22.6 and earlier allows remote attackers to gain access by guessing custom access tokens. The default configuration fails to throttle repeated custom access-token submissions, allowing exhaustive access-code attempts. No authentication or user interaction is required, and a successful guess grants unauthorized access to the protected resource.

The record

CVE
CVE-2022-36781
Published
Sep 28, 2022
Updated
Sep 16, 2024
Vendor
ConnectWise
Product
ScreenConnect
Classifications
CWE-307, CAPEC-49, T1110
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Sep 28, 2022CVE publishedPublication date reported by the CVE source.
  2. Sep 16, 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=22.7 <22.6*

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

ConnectWise · ScreenConnectversion=22.7 <22.6*

Published CVSS scores

5.0NIST NVDAV:N/AC:L/Au:N/C:P/I:N/A:N
5.3NIST NVDCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N

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 exploitUnconfirmed

Weakness, pattern, technique

CWE-307Improper Restriction of Excessive Authentication Attempts
CAPEC-49Password Brute Forcing
T1110Brute Force

Public exploit references

No public exploit references are available in this record.

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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