CVE-2021-4111Public exploitNetwork attack vector

Product price corruption via missing lower-bound validation

Published Dec 15, 2021 · Updated Aug 3, 2024

Improper input validation in YetiForce CRM 6.3.0 and earlier allows remote attackers to store negative product prices via crafted fields. The MultiCurrency validator accepts numeric prices without enforcing the field bounds, so negative product amounts reach persistent storage. Reachability requires access to a product-editing path, and the established consequence is corruption of product pricing data.

CVSS severity7.3
High
EPSS probability0.62%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Improper input validation in YetiForce CRM 6.3.0 and earlier allows remote attackers to store negative product prices via crafted fields. The MultiCurrency validator accepts numeric prices without enforcing the field bounds, so negative product amounts reach persistent storage. Reachability requires access to a product-editing path, and the established consequence is corruption of product pricing data.

The record

CVE
CVE-2021-4111
Published
Dec 15, 2021
Updated
Aug 3, 2024
Vendor
YetiForce
Product
YetiForce CRM
Classifications
CWE-840, CWE-20, T1565.001
Attack vector
network
Privileges
Unavailable

Timeline

How it unfolded

  1. Dec 15, 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?

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

  1. Affected versionversion=unspecified <6.4.0

What conditions does exploitation require?

Attack vectornetwork
Required privilegesUnavailable in this record.

What is affected?

YetiForce · YetiForce CRMversion=unspecified <6.4.0

Published CVSS scores

4.0NVDAV:N/AC:L/Au:S/C:N/I:P/A:N
7.3huntr.devCVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L
4.3NVDCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/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
PrivilegesUnavailable
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-840Business Logic Errors
CWE-20Improper Input Validation
T1565.001Stored Data Manipulation

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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