CVE-2021-40858Public exploitNetwork attack vector

Arbitrary file disclosure via fileName path traversal

Published Dec 13, 2021 · Updated Aug 4, 2024

Path traversal in Auerswald COMpact 5500R before 8.2B allows remote authenticated users to read arbitrary files through its web interface. The wartemusik_verwaltung_play and logo_verwaltung_preview handlers retrieve files named by fileName without blocking ../ traversal. A sub-admin session is required; reading /data/db/pbx4.db exposes the cleartext Admin password and enables higher-privileged login.

CVSS severity4.9
Medium
EPSS probability2.39%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Path traversal in Auerswald COMpact 5500R before 8.2B allows remote authenticated users to read arbitrary files through its web interface. The wartemusik_verwaltung_play and logo_verwaltung_preview handlers retrieve files named by fileName without blocking ../ traversal. A sub-admin session is required; reading /data/db/pbx4.db exposes the cleartext Admin password and enables higher-privileged login.

The record

CVE
CVE-2021-40858
Published
Dec 13, 2021
Updated
Aug 4, 2024
Vendor
Unknown vendor
Product
Unknown product
Classifications
CWE-22, T1005
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Dec 13, 2021CVE publishedPublication date reported by the CVE source.
  2. Aug 4, 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?

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

6.8NIST National Vulnerability DatabaseAV:N/AC:L/Au:S/C:C/I:N/A:N
4.9NIST National Vulnerability DatabaseCVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/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 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 exploitPublished

Weakness, pattern, technique

CWE-22Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')
T1005Data from Local System

Public exploit references

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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