CVE-2023-20572: Medium severity Microsoft ASP vulnerability

Published Dec 17, 2025
·
Updated

An observable timing discrepancy in the ASP could allow a privileged attacker to perform a brute-force attack against the hash message authentication code, allowing the input of an arbitrary message, potentially leading to a loss of data integrity.

Affected Software

1 affected component
Microsoft ASP

Event History

Dec 17, 2025
CVE Published
12:00 AM
Data Sourced
12:00 AM
SeverityWeakness
Jun 26, 2026
CVE Published
via MITRE·03:53 PM
Data Sourced
via MITRE·03:53 PM
DescriptionWeakness
Data Sourced
via NVD·04:16 PM
DescriptionSeverityWeakness

Parent advisories

This vulnerability appears in the following advisories.

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Frequently Asked Questions

1

What is the severity of CVE-2023-20572?

CVE-2023-20572 has a medium severity level with a CVSS score of 5.6.

2

How do I fix CVE-2023-20572?

To mitigate CVE-2023-20572, ensure that your ASP implementation uses secure hash functions and employs measures to prevent timing attacks.

3

What type of attack is possible due to CVE-2023-20572?

CVE-2023-20572 allows a privileged attacker to perform a brute-force attack against the hash message authentication code.

4

What could be the consequence of exploiting CVE-2023-20572?

Exploiting CVE-2023-20572 may lead to a loss of data integrity by allowing the input of arbitrary messages.

5

Which software is affected by CVE-2023-20572?

CVE-2023-20572 affects Microsoft ASP (Microsoft) software.

Contact

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