CVE-2022-3439Network attack vector

Unauthenticated resource exhaustion via missing request throttling

Published Oct 14, 2022 · Updated May 14, 2025

Resource exhaustion in IKUS Software Rdiffweb before 2.5.0 allows remote attackers to interrupt service via repeated requests. The login, MFA, password-change, and API paths do not consistently count or throttle failed or sensitive requests, allowing repeated operations to consume resources. Network access to these endpoints is sufficient; triggering the behavior can degrade availability and facilitate repeated credential attempts.

CVSS severity9.8
Critical
EPSS probability0.65%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Resource exhaustion in IKUS Software Rdiffweb before 2.5.0 allows remote attackers to interrupt service via repeated requests. The login, MFA, password-change, and API paths do not consistently count or throttle failed or sensitive requests, allowing repeated operations to consume resources. Network access to these endpoints is sufficient; triggering the behavior can degrade availability and facilitate repeated credential attempts.

The record

CVE
CVE-2022-3439
Published
Oct 14, 2022
Updated
May 14, 2025
Vendor
IKUS Software
Product
Rdiffweb
Classifications
CWE-770, T1499.004
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Oct 14, 2022CVE publishedPublication date reported by the CVE source.
  2. May 14, 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

9.8NIST NVDCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
4.5huntr.devCVSS:3.0/AV:P/AC:L/PR:H/UI:R/S:U/C:N/I:L/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.

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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
T1499.004Application or System Exploitation

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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