CVE-2021-45458Network attack vector

Password disclosure via fixed AES key and IV

Published Jan 6, 2022 · Updated Aug 4, 2024

Credential disclosure in Apache Kylin 2.6.6 and earlier, 3.1.2 and earlier, or 4.0.0 allows attackers to decrypt configured passwords. EncryptUtil initializes its AES/CFB cipher with a static key and the fixed IV AAAAAAAAAAAAAAAA, making PasswordPlaceholderConfigurer ciphertext reproducible and reversible outside the server. Exposure requires use of the helper for secrets such as metadata-database or LDAP passwords and access to the ciphertext; the reported consequence is password disclosure without integrity or availability impact.

CVSS severity7.5
High
EPSS probability2.08%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Credential disclosure in Apache Kylin 2.6.6 and earlier, 3.1.2 and earlier, or 4.0.0 allows attackers to decrypt configured passwords. EncryptUtil initializes its AES/CFB cipher with a static key and the fixed IV AAAAAAAAAAAAAAAA, making PasswordPlaceholderConfigurer ciphertext reproducible and reversible outside the server. Exposure requires use of the helper for secrets such as metadata-database or LDAP passwords and access to the ciphertext; the reported consequence is password disclosure without integrity or availability impact.

The record

CVE
CVE-2021-45458
Published
Jan 6, 2022
Updated
Aug 4, 2024
Vendor
The Apache Software Foundation
Product
Apache Kylin
Classifications
CWE-330, CWE-798, T1555
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Jan 6, 2022CVE 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?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=Apache Kylin 2 <=2.6.6
  2. Affected versionversion=Apache Kylin 3 <=3.1.2
  3. Affected versionversion=Apache Kylin 4 <=4.0.0

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

The Apache Software Foundation · Apache Kylinversion=Apache Kylin 2 <=2.6.6; version=Apache Kylin 3 <=3.1.2; version=Apache Kylin 4 <=4.0.0

Published CVSS scores

5.0NIST NVDAV:N/AC:L/Au:N/C:P/I:N/A:N
7.5NIST NVDCVSS:3.1/AV:N/AC:L/PR:N/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
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-330Use of Insufficiently Random Values
CWE-798Use of Hard-coded Credentials
T1555Credentials from Password Stores

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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