CVE-2022-33174Public exploitNetwork attack vector

Credential disclosure via empty session token comparison

Published Jun 13, 2022 · Updated Aug 3, 2024

Authorization bypass in Powertek PDU firmware before 3.30.30 allows remote attackers to read stored administrator credentials. The checkUserLevel() function in /usr/lib/libweb.so accepts an empty tmpToken because it compares the cookie against vacant entries in the active-session table. Network access to the PDU's HTTP interface is sufficient to retrieve the cleartext sys.su.name and sys.passwd values without an active session.

CVSS severity9.8
Critical
EPSS probability14.12%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Authorization bypass in Powertek PDU firmware before 3.30.30 allows remote attackers to read stored administrator credentials. The checkUserLevel() function in /usr/lib/libweb.so accepts an empty tmpToken because it compares the cookie against vacant entries in the active-session table. Network access to the PDU's HTTP interface is sufficient to retrieve the cleartext sys.su.name and sys.passwd values without an active session.

The record

CVE
CVE-2022-33174
Published
Jun 13, 2022
Updated
Aug 3, 2024
Vendor
Unknown vendor
Product
Unknown product
Classifications
CWE-863, T1552
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Jun 13, 2022CVE publishedPublication date reported by the CVE source.
  2. Aug 3, 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 privilegesunauthenticated

What is affected?

Affected products and versions are unavailable in this record.

Published CVSS scores

7.5NIST NVDCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
5.0NIST NVDAV:N/AC:L/Au:N/C:P/I:N/A:N
9.8MITRECVSS: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.

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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 exploitPublished

Weakness, pattern, technique

CWE-863Incorrect Authorization
T1552Unsecured Credentials

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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