Cyber Resilience

CVE-2024-0056

Microsoft .Net Framework 4.8 – 4.8.04690.02

Published
09 January 2024
Modified
21 November 2024
Patch / advisory
View advisory
CVSS Score v3.1 8.7
Click a component to see what it means
Raw vectorCVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:H/I:H/A:N
EPSS Score 0.012 65th percentile
Risk Priority 63 floored blend · peak EPSS

Summary

CVE-2024-0056 is a high-severity Cleartext Transmission of Sensitive Information (CWE-319) vulnerability in Microsoft .Net Framework. Its CVSS base score is 8.7 (High).

Operationally, exploitation aligns with the MITRE ATT&CK technique Network Sniffing (T1040); ranked in the top 35% of CVEs by exploit likelihood; it is not currently listed in the CISA KEV catalog.

The strongest mitigations our analysis identified map to SC-8 (Transmission Confidentiality and Integrity) — see the control section below for these in your framework.

OWASP Top 10 for Web (2025)

A04:2025 Cryptographic Failures

EU & UK References

Vulnerability Data

Microsoft.Data.SqlClient and System.Data.SqlClient SQL Data Provider Security Feature Bypass Vulnerability

CWE(s)
CWE-319NVD-CWE-noinfo

Related Threats

MITRE ATT&CK Enterprise Techniques

T1040 Network Sniffing Credential Access
Adversaries may passively sniff network traffic to capture information about an environment, including authentication material passed over the network.
attack.mitre.org →
Derived from this CVE’s CWE(s) via the direct CWE→ATT&CK cross-walk.

CVEs Like This One

CVE-2024-21406Same product: Microsoft Windows 10 1607
CVE-2026-34346Same product: Microsoft Windows 10 1607
CVE-2025-53139Same product: Microsoft Windows 10 21H2
CVE-2024-38167Same product: Microsoft .Net
CVE-2026-23661Same vendor: Microsoft
CVE-2024-30098Same product: Microsoft Windows 10 1607
CVE-2024-38081Same product: Microsoft .Net
CVE-2023-32043Same product: Microsoft Windows 10 1607
CVE-2024-0057Same product: Microsoft .Net
CVE-2024-21409Same product: Microsoft .Net

Affected Assets

microsoft
microsoft.data.sqlclient
2.1 — 2.1.7 · 3.1 — 3.1.5 · 4.0 — 4.0.5
microsoft
sql server
2022
microsoft
system.data.sqlclient
≤ 4.8.6
microsoft
visual studio 2022
17.2 — 17.2.23 · 17.4 — 17.4.15 · 17.6 — 17.6.11
microsoft
.net framework
2.0, 3.5, 4.6.2, 4.7, 4.7.1 · 4.8 — 4.8.04690.02 · 4.8 — 4.8.04690.01 · 4.8 — 4.8.04690.02
microsoft
.net
8.0.0 · 6.0.0 — 6.0.26 · 7.0.0 — 7.0.15

Mitigating Controls

Mitigating Controls (NIST 800-53 r5) AI

SC-8 Transmission Confidentiality and Integrity good match

SC-8 directly requires protecting confidentiality of transmitted information, which structurally eliminates cleartext transmission of sensitive data.

Mitigating Controls (NIST CSF 2.0) AI

Derived directly from the weakness types (CWEs) cited in the NVD entry via our AI-authored CWE→CSF cross-walk (authority under review) — links open the control.

PR.DS-02 full match
prevents

Encryption of data-in-transit directly prevents cleartext transmission while the control also addresses integrity and availability.

Mitigating Controls (ISO/IEC 27001:2022 Annex A) AI

Derived directly from the weakness types (CWEs) cited in the NVD entry via our AI-authored CWE→ISO cross-walk (authority under review) — links open the control.

A.8.21 Security of network services mostly match
prevents

Specifying encryption and other security technology for network services prevents transmission of sensitive information in cleartext over potentially untrusted channels.

A.5.14 Information transfer partial match
prevents

Mandating cryptographic protection and stronger authentication on public networks stops the transmission of plaintext sensitive information.

A.6.7 Remote working partial match
mitigates

Specifying communications-security requirements and secure remote-access methods (including encryption expectations) prevents the transmission of sensitive data in cleartext over home or public networks.

A.7.12 Cabling security partial match
mitigates

Armoured conduits, electromagnetic shielding and locked enclosures make passive eavesdropping on unencrypted traffic traversing the cables more difficult, mitigating exposure of sensitive data in transit.

References