CVE-2024-9044

Service interruption via crafted XML external entities

Published Nov 29, 2024 · Updated Nov 29, 2024

XML external entity processing in msg Suisse AG EasyTax 2023 1.2 and earlier allows local users to interrupt service through XML input. NCSC.ch has not published the affected parser, XML input path, or the operation performed on external entity declarations. Exploitation requires active user interaction and causes limited service interruption, with no direct data disclosure or modification reported.

CVSS severity4.6
Medium
EPSS probability0.20%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

XML external entity processing in msg Suisse AG EasyTax 2023 1.2 and earlier allows local users to interrupt service through XML input. NCSC.ch has not published the affected parser, XML input path, or the operation performed on external entity declarations. Exploitation requires active user interaction and causes limited service interruption, with no direct data disclosure or modification reported.

The record

CVE
CVE-2024-9044
Published
Nov 29, 2024
Updated
Nov 29, 2024
Vendor
msg Suisse AG
Product
EasyTax
Classifications
CWE-611, CWE-827, CAPEC-228
Attack vector
local
Privileges
unauthenticated

Timeline

How it unfolded

  1. Nov 29, 2024CVE publishedPublication date reported by the CVE source.
  2. Nov 29, 2024Record 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=<= 2021 <=*
  2. Affected versionversion=2022 <=1.3
  3. Affected versionversion=2023 <=1.2

What conditions does exploitation require?

Attack vectorlocal
Required privilegesunauthenticated

What is affected?

msg Suisse AG · EasyTaxversion=<= 2021 <=*; version=2022 <=1.3; version=2023 <=1.2

Published CVSS scores

4.6NCSC.chCVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:A/VC:N/VI:N/VA:L/SC:L/SI:N/SA:L

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)
Vectorlocal
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-611Improper Restriction of XML External Entity Reference
CWE-827Improper Control of Document Type Definition
CAPEC-228DTD Injection

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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