CVE-2021-23196Network attack vector

Authentication bypass via client-side session enforcement

Published Jan 21, 2022 · Updated Apr 16, 2025

Authentication bypass in Link+ Agilia through 3.0 D15 allows remote attackers to access protected web application functions. The web application enforces authentication and session management only in client-side code while leaving authentication attributes insufficiently protected. No credentials or user interaction are required; bypassing those checks exposes protected data and permits unauthorized application actions.

CVSS severity7.3
High
EPSS probability0.91%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Authentication bypass in Link+ Agilia through 3.0 D15 allows remote attackers to access protected web application functions. The web application enforces authentication and session management only in client-side code while leaving authentication attributes insufficiently protected. No credentials or user interaction are required; bypassing those checks exposes protected data and permits unauthorized application actions.

The record

CVE
CVE-2021-23196
Published
Jan 21, 2022
Updated
Apr 16, 2025
Vendor
Fresenius Kabi
Product
Link+ Agilia
Classifications
CWE-522, CWE-287, T1210
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Jan 21, 2022CVE publishedPublication date reported by the CVE source.
  2. Apr 16, 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 <3.0

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Fresenius Kabi · Link+ Agiliaversion=unspecified <3.0

Published CVSS scores

7.3ICS-CERTCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L
7.5NIST NVDAV:N/AC:L/Au:N/C:P/I:P/A:P
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.

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
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-522Insufficiently Protected Credentials
CWE-287Improper Authentication
T1210Exploitation of Remote Services

Public exploit references

No public exploit references are available in this record.

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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