CVE-2022-3327Public exploit

Authenticated backup access via non-expiring sessions

Published Oct 19, 2022 · Updated May 9, 2025

Session expiration failure in IKUS Software Rdiffweb before 2.5.0a6 allows physically proximate attackers to reuse authenticated sessions. The authentication tool treats a session as logged in while its user and login-time keys remain present, without enforcing an absolute lifetime. Exploitation requires access to an authenticated user's browser or session material and permits that user's backup-data access and actions.

CVSS severity4.5
Medium
EPSS probability0.82%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Session expiration failure in IKUS Software Rdiffweb before 2.5.0a6 allows physically proximate attackers to reuse authenticated sessions. The authentication tool treats a session as logged in while its user and login-time keys remain present, without enforcing an absolute lifetime. Exploitation requires access to an authenticated user's browser or session material and permits that user's backup-data access and actions.

The record

CVE
CVE-2022-3327
Published
Oct 19, 2022
Updated
May 9, 2025
Vendor
IKUS Software
Product
Rdiffweb
Classifications
CWE-306
Attack vector
physical
Privileges
admin

Timeline

How it unfolded

  1. Oct 19, 2022CVE publishedPublication date reported by the CVE source.
  2. May 9, 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?

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  1. Affected versionversion=unspecified <2.5.0a6

What conditions does exploitation require?

Attack vectorphysical
Required privilegesadmin

What is affected?

IKUS Software · Rdiffwebversion=unspecified <2.5.0a6

Published CVSS scores

4.5huntr.dev CNACVSS:3.0/AV:P/AC:L/PR:H/UI:R/S:U/C:H/I:L/A:N
9.3GitHub Advisory DatabaseCVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N
9.8NIST NVDCVSS: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.

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No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectorphysical
Privilegesadmin
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-306Missing Authentication for Critical Function

Public exploit references

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Technologies

Your stack

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Your stack

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