CVE-2021-41835Network attack vector

Information disclosure via unencrypted management traffic

Published Jan 21, 2022 · Updated Apr 16, 2025

Cleartext transmission in the Link+ Agilia 3.0 D15 and earlier management interface allows remote attackers to intercept sensitive data. The interface serves unencrypted HTTP on TCP/80 and fails to redirect requests to the available TLS-protected service on TCP/443. Network reachability is sufficient to observe exposed traffic; the documented consequence is disclosure of management data in transit.

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

What happened

Cleartext transmission in the Link+ Agilia 3.0 D15 and earlier management interface allows remote attackers to intercept sensitive data. The interface serves unencrypted HTTP on TCP/80 and fails to redirect requests to the available TLS-protected service on TCP/443. Network reachability is sufficient to observe exposed traffic; the documented consequence is disclosure of management data in transit.

The record

CVE
CVE-2021-41835
Published
Jan 21, 2022
Updated
Apr 16, 2025
Vendor
Fresenius Kabi
Product
Link+ Agilia
Classifications
CWE-327, CWE-319, T1040
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
7.5NISTCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
5.0NISTAV:N/AC:L/Au:N/C:P/I:N/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 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-327Use of a Broken or Risky Cryptographic Algorithm
CWE-319Cleartext Transmission of Sensitive Information
T1040Network Sniffing

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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