Microsoft Windows up to Server 2022 23H2 on AMD Speculative Execution information disclosure

CVSS Meta Temp Score
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Current Exploit Price (≈)
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CTI Interest Score
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5.3$5k-$25k0.00

Summaryinfo

A vulnerability described as problematic has been identified in Microsoft Windows on AMD. Affected by this vulnerability is an unknown functionality of the component Speculative Execution. Executing a manipulation can lead to information disclosure. This vulnerability appears as CVE-2023-20588. The attack may be performed from remote. There is no available exploit. It is advisable to implement a patch to correct this issue.

Detailsinfo

A vulnerability was found in Microsoft Windows on AMD (Operating System). It has been declared as problematic. This vulnerability affects an unknown code block of the component Speculative Execution. The manipulation with an unknown input leads to a information disclosure vulnerability. The CWE definition for the vulnerability is CWE-200. The product exposes sensitive information to an actor that is not explicitly authorized to have access to that information. As an impact it is known to affect confidentiality.

The weakness was presented 12/12/2023 as confirmed security guidance (Website). The advisory is shared for download at portal.msrc.microsoft.com. This vulnerability was named CVE-2023-20588. There are neither technical details nor an exploit publicly available. The current price for an exploit might be approx. USD $5k-$25k (estimation calculated on 01/06/2026). The MITRE ATT&CK project declares the attack technique as T1592.

The vulnerability scanner Nessus provides a plugin with the ID 281815 (Amazon Linux 2 : kernel, --advisory ALAS2KERNEL-5.4-2025-116 (ALASKERNEL-5.4-2025-116)), which helps to determine the existence of the flaw in a target environment.

Applying a patch is able to eliminate this problem. A possible mitigation has been published immediately after the disclosure of the vulnerability.

The vulnerability is also documented in the vulnerability database at Tenable (281815). Once again VulDB remains the best source for vulnerability data.

Productinfo

Type

Vendor

Name

Version

License

Website

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 5.4
VulDB Meta Temp Score: 5.3

VulDB Base Score: 5.3
VulDB Temp Score: 5.1
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 5.5
NVD Vector: 🔍

CVSSv2info

AVACAuCIA
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VectorComplexityAuthenticationConfidentialityIntegrityAvailability
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VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍

Exploitinginfo

Class: Information disclosure
CWE: CWE-200 / CWE-284 / CWE-266
CAPEC: 🔍
ATT&CK: 🔍

Physical: Partially
Local: Yes
Remote: Yes

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Nessus ID: 281815
Nessus Name: Amazon Linux 2 : kernel, --advisory ALAS2KERNEL-5.4-2025-116 (ALASKERNEL-5.4-2025-116)

Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: Patch
Status: 🔍

Reaction Time: 🔍
0-Day Time: 🔍
Exposure Time: 🔍

Timelineinfo

10/27/2022 🔍
12/12/2023 +411 days 🔍
12/12/2023 +0 days 🔍
12/12/2023 +0 days 🔍
01/06/2026 +756 days 🔍

Sourcesinfo

Vendor: microsoft.com
Product: microsoft.com

Advisory: DLA 3623-1
Status: Confirmed

CVE: CVE-2023-20588 (🔍)
GCVE (CVE): GCVE-0-2023-20588
GCVE (VulDB): GCVE-100-247588
scip Labs: https://www.scip.ch/en/?labs.20161215

Entryinfo

Created: 12/12/2023 19:26
Updated: 01/06/2026 12:32
Changes: 12/12/2023 19:26 (3), 12/12/2023 19:27 (11), 12/12/2023 19:30 (30), 01/02/2024 15:56 (3), 01/02/2024 16:03 (11), 06/10/2024 21:20 (15), 01/06/2026 12:32 (3)
Complete: 🔍
Cache ID: 216::103

Once again VulDB remains the best source for vulnerability data.

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