CVE-2021-44035Network attack vector

Malware execution via unsafe attachment delivery

Published Dec 17, 2021 · Updated May 30, 2025

Improper attachment handling in Wolters Kluwer TeamMate AM 12.4 Update 1 allows remote authenticated users to deliver malicious files. The attachment workflow accepts attacker-supplied files and presents them to other authenticated users without a published safety control. Exploitation requires an authenticated recipient to download and execute the attachment, resulting in attacker-supplied code running in that user's context.

CVSS severity7.8
High
EPSS probability0.55%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Improper attachment handling in Wolters Kluwer TeamMate AM 12.4 Update 1 allows remote authenticated users to deliver malicious files. The attachment workflow accepts attacker-supplied files and presents them to other authenticated users without a published safety control. Exploitation requires an authenticated recipient to download and execute the attachment, resulting in attacker-supplied code running in that user's context.

The record

CVE
CVE-2021-44035
Published
Dec 17, 2021
Updated
May 30, 2025
Vendor
Unknown vendor
Product
Unknown product
Classifications
T1204.002
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Dec 17, 2021CVE publishedPublication date reported by the CVE source.
  2. May 30, 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?

Affected buildAffected product and version details are unavailable.

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

Affected products and versions are unavailable in this record.

Published CVSS scores

4.4MITRECVSS:3.1/AV:N/AC:H/PR:L/UI:R/S:C/C:L/I:L/A:N
7.8NIST NVDCVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
6.8NIST NVDAV:N/AC:M/Au:N/C:P/I:P/A:P

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
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

T1204.002Malicious File

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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