CVE-2021-45223Public exploitNetwork attack vector

Authenticated server crash via malformed MainArea parameter

Published Jan 24, 2022 · Updated Aug 4, 2024

Improper input neutralization in COINS Construction Cloud 11.12 allows remote authenticated users to crash the server via an HTTP request. The wou005.p endpoint processes a malformed MainArea parameter without safely neutralizing its contents, leaving the server unresponsive within seconds. Any logged-in user can trigger a complete service interruption by requesting the crafted URL.

CVSS severity6.5
Medium
EPSS probability1.64%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Improper input neutralization in COINS Construction Cloud 11.12 allows remote authenticated users to crash the server via an HTTP request. The wou005.p endpoint processes a malformed MainArea parameter without safely neutralizing its contents, leaving the server unresponsive within seconds. Any logged-in user can trigger a complete service interruption by requesting the crafted URL.

The record

CVE
CVE-2021-45223
Published
Jan 24, 2022
Updated
Aug 4, 2024
Vendor
Unknown vendor
Product
Unknown product
Classifications
CWE-707, T1499.004
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Jan 24, 2022CVE 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?

Affected buildAffected product and version details are unavailable.

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

Affected products and versions are unavailable in this record.

Published CVSS scores

4.0NIST NVDAV:N/AC:L/Au:S/C:N/I:N/A:P
6.5NIST NVDCVSS:3.1/AV:N/AC:L/PR:L/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 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-707Improper Neutralization
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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