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VulnerabilityCVE-2023-24880Published 2023-03-14

CVE-2023-24880 — Microsoft Windows 10 Version 1809

mediumCISA KEVRansomwarePublic exploit1 PoC repo

As of 2025-10-21, CVE-2023-24880 is a MEDIUM-severity vulnerability in Microsoft Windows 10 Version 1809, CVSS v3.1 4.4, EPSS 78.0% (99.5th percentile). It is listed in the CISA Known Exploited Vulnerabilities catalog (added 2023-03-14), with a US federal remediation deadline of 2023-04-04, and CISA links it to known ransomware campaigns. Threadlinqs Intelligence links 1 tracked threat campaign to CVE-2023-24880, most recently “Magniber Ransomware: Rewritten 2022 Variant Uses MSI Installer, AES-NI Encryption, and UAC Bypass”.

CVSS v3.1
4.4/10Medium
EPSS
78.0%Higher than 99.5% of scored CVEs
CISA KEV
ListedAdded · due 2023-04-04
Tracked threats
1Campaigns referencing it
Priority
10/10Threadlinqs triage score
Published
Updated 2025-10-21
CVSS v3.1 4.4 (MEDIUM) · EPSS 78.0% (higher than 99.5% of all scored CVEs) · Priority 10/10 · Published 2023-03-14

Last updated:

What is CVE-2023-24880?

Windows SmartScreen Security Feature Bypass Vulnerability

The record classifies CVE-2023-24880 under weakness class CWE-863. Its CVSS v3 base vector states that the flaw requires local access to the host, needs no prior authentication, needs a user to take an action first. 12 affected-product entries are recorded, across 1 vendor, listed below. The identifier was first published 1321 days ago.

Severity and exploitation probability

CVSS v3.1 base score
4.4 — MEDIUM
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:L/E:F/RL:O/RC:C
EPSS (FIRST)
78.0% probability of exploitation in the next 30 days, higher than 99.5% of all scored CVEs
CISA KEV
Listed since 2023-03-14, federal remediation deadline 2023-04-04 — used in known ransomware campaigns
Threadlinqs priority
10/10 — CISA lists it as used in ransomware, which Threadlinqs scores at the maximum
Published
2023-03-14, last modified 2025-10-21

Is CVE-2023-24880 being exploited?

CISA added CVE-2023-24880 to the Known Exploited Vulnerabilities catalog on 2023-03-14, which means the agency holds evidence of exploitation in the wild; US federal civilian agencies had to remediate it by 2023-04-04 under BOD 22-01. CISA flags the vulnerability as one used in known ransomware campaigns. Weaponised exploit code for CVE-2023-24880 is publicly available. 1 public proof-of-concept repository is tracked for this identifier. It currently carries a trending score of 48 in the Threadlinqs vulnerability feed.

Affected products and versions

  • Microsoft: Windows 10 Version 1809, Windows Server 2019, Windows Server 2019 (Server Core installation), Windows Server 2022, Windows 10 Version 20H2, Windows 11 version 21H2, Windows 10 Version 21H2, Windows 11 version 22H2, Windows 10 Version 22H2, Windows 10 Version 1607, Windows Server 2016, Windows Server 2016 (Server Core installation)

How to fix CVE-2023-24880

Because CVE-2023-24880 is KEV-listed, US federal civilian agencies were required to apply the vendor fix, or stop using the product, by 2023-04-04. No vendor patch reference has been recorded for CVE-2023-24880 in the tracked sources. Follow the references below for a fix, and treat the products listed above as exposed until the vendor states otherwise.

Threat activity tracking CVE-2023-24880

1 tracked threat in the Threadlinqs corpus references CVE-2023-24880, either in the campaign’s CVE list or as an indicator on the campaign record.

Sources

Enriched from CVE.org, FIRST EPSS, CISA KEV, GitHub Security Advisories, public proof-of-concept repositories. Last verified by Threadlinqs on .

Vendor advisory and patch