CVE-2023-21808
High
Published: 14 February 2023
Published
14 February 2023
Modified
21 November 2024
KEV Added
—
Patch
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CVSS Score v3.1
7.8
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
EPSS Score
0.0128
80.0th percentile
Risk Priority
16
60% EPSS · 20% KEV · 20% CVSS
Summary
CVE-2023-21808 is a high-severity Use After Free (CWE-416) vulnerability in Microsoft .Net Framework. Its CVSS base score is 7.8 (High).
Operationally, ranked in the top 20.0% of CVEs by exploit likelihood; it is not currently listed in the CISA KEV catalog.
EU & UK References
- 🇪🇺 ENISA EUVD: EUVD-2023-0660
Vulnerability details
.NET and Visual Studio Remote Code Execution Vulnerability
- CWE(s)
Related Threats
No named actor attribution yet. ATT&CK technique mapping in progress for this CVE.
Affected Assets
microsoft
.net
6.0.0, 7.0.0
microsoft
visual studio 2017
15.0 — 15.9.51
microsoft
visual studio 2019
16.0 — 16.11.24
microsoft
visual studio 2022
17.0, 17.2, 17.4
microsoft
.net framework
3.5, 4.6.2, 4.7, 4.7.1, 4.7.2
Mitigating Controls
Likely Mitigating Controls AI
Per-CVE control mapping for this CVE has not run yet; the list below is derived from the weakness types (CWEs) cited in the NVD entry.
addresses: CWE-416
Use-after-free exploits that achieve arbitrary code execution are blocked or significantly hardened by non-executable pages and ASLR.