CVE-2022-3456Network attack vector

Account compromise via unthrottled API password guessing

Published Oct 13, 2022 · Updated May 15, 2025

Missing API rate limiting in IKUS Software Rdiffweb before 2.5.0 allows attackers to make unlimited password guesses. The API basic-authentication check did not record failed password validations, so repeated invalid credentials did not exhaust the configured request allowance. The API must be network-reachable; successful guessing grants the compromised account's permissions, while repeated requests consume service resources.

CVSS severity5.6
Medium
EPSS probability0.37%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Missing API rate limiting in IKUS Software Rdiffweb before 2.5.0 allows attackers to make unlimited password guesses. The API basic-authentication check did not record failed password validations, so repeated invalid credentials did not exhaust the configured request allowance. The API must be network-reachable; successful guessing grants the compromised account's permissions, while repeated requests consume service resources.

The record

CVE
CVE-2022-3456
Published
Oct 13, 2022
Updated
May 15, 2025
Vendor
IKUS Software
Product
Rdiffweb
Classifications
CWE-770, T1110.001
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Oct 13, 2022CVE publishedPublication date reported by the CVE source.
  2. May 15, 2025Record 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 <2.5.0

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

IKUS Software · Rdiffwebversion=unspecified <2.5.0

Published CVSS scores

5.6huntr.devCVSS:3.0/AV:L/AC:L/PR:L/UI:R/S:U/C:N/I:H/A:L
9.8NVDCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/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 exploitUnconfirmed

Weakness, pattern, technique

CWE-770Allocation of Resources Without Limits or Throttling
T1110.001Brute Force: Password Guessing

Public exploit references

No public exploit references are available in this record.

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Technologies

Your stack

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Your stack

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