CVE-2022-0021

Credential disclosure via cleartext Connect Before Logon logging

Published Feb 10, 2022 · Updated Sep 16, 2024

Information exposure in Palo Alto Networks GlobalProtect App 5.2 before 5.2.9 allows local users to read cleartext VPN credentials from logs. On Windows, Connect Before Logon authentication writes the connecting user's credentials to a log file without redacting the password. Exposure requires Connect Before Logon to be enabled and local low-privileged access, permitting credential theft but no data modification or service interruption.

CVSS severity3.3
Low
EPSS probability0.22%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Information exposure in Palo Alto Networks GlobalProtect App 5.2 before 5.2.9 allows local users to read cleartext VPN credentials from logs. On Windows, Connect Before Logon authentication writes the connecting user's credentials to a log file without redacting the password. Exposure requires Connect Before Logon to be enabled and local low-privileged access, permitting credential theft but no data modification or service interruption.

The record

CVE
CVE-2022-0021
Published
Feb 10, 2022
Updated
Sep 16, 2024
Vendor
Palo Alto Networks
Product
GlobalProtect App
Classifications
CWE-532, T1552.001
Attack vector
local
Privileges
authenticated

Timeline

How it unfolded

  1. Feb 10, 2022CVE publishedPublication date reported by the CVE source.
  2. Sep 16, 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=5.2 <5.2.9 changes=[{"at":"5.2.9","status":"unaffected"}]

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

Palo Alto Networks · GlobalProtect Appversion=5.2 <5.2.9 changes=[{"at":"5.2.9","status":"unaffected"}]

Published CVSS scores

5.5NIST NVDCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N
3.3Palo Alto NetworksCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N
1.9NIST NVDAV:L/AC:M/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.

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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)
Vectorlocal
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-532Insertion of Sensitive Information into Log File
T1552.001Unsecured Credentials: Credentials In Files

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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