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CVE-2024-43451

Exploited in the wild. In CISA KEV since 2024‑11‑12. Fixed versions are out.

CVSS 3.16.5MediumEPSS percentile99th84% chance in 30 daysCISA KEVListedsince 2024-11-12, due 2024-12-03
No public exploit knownFix5 products10 fixed builds listed below

Published Updated Sources: CVE.org, NVD, BDU

NVD CVE.org

What to do

Find your product and version, then upgrade to the build on the right.

  • Microsoft Windows 10 Version 1809Affected: ≥ 10.0.17763.0, < 10.0.17763.6532Upgrade to: 10.0.17763.6532Affected: ≥ 10.0.19043.0, < 10.0.19044.5131Upgrade to: 10.0.19044.5131Affected: ≥ 10.0.19045.0, < 10.0.19045.5131Upgrade to: 10.0.19045.5131Affected: ≥ 10.0.10240.0, < 10.0.10240.20826Upgrade to: 10.0.10240.20826 + 1 more branchStated by: CVE record
  • Microsoft Windows 11 version 22H2Affected: ≥ 10.0.22621.0, < 10.0.22621.4460Upgrade to: 10.0.22621.4460Affected: ≥ 10.0.22631.0, < 10.0.22631.4460Upgrade to: 10.0.22631.4460Affected: ≥ 10.0.26100.0, < 10.0.26100.2314Upgrade to: 10.0.26100.2314Stated by: CVE record
  • Microsoft Windows Server 2016Affected: ≥ 10.0.14393.0, < 10.0.14393.7515Upgrade to: 10.0.14393.7515Stated by: CVE record
  • Microsoft Windows Server 2019Affected: ≥ 10.0.17763.0, < 10.0.17763.6532Upgrade to: 10.0.17763.6532Stated by: CVE record
  • Microsoft Windows Server 2022Affected: ≥ 10.0.20348.0, < 10.0.20348.2849Upgrade to: 10.0.20348.2849Affected: ≥ 10.0.25398.0, < 10.0.25398.1251Upgrade to: 10.0.25398.1251Stated by: CVE record

Versions as the sources state them. 4 more products have version data. Full version matrix after sign-in

Check it yourselfA free OpenVAS check exists for this CVE. Run it against your hosts.Is your organisation exposed?Request an assessment to establish which checks fit your systems.

Coverage timeline

0 publishers

  1. Added to CISA KEV catalog

    ·CISA KEV

Sourced from public security reporting — each date is when it was published, not when it happened.

What it is

From the CVE record

NTLM Hash Disclosure Spoofing Vulnerability

In plain language

No plain-language summary for this CVE yet.

Exploitation

Where each signal puts this CVE on the scale from published to confirmed exploited.

EPSS99th
CISA KEV
CISA KEV

Listed as exploited in the wild since 2024-11-12.

US federal agencies must remediate by 2024-12-03.

Apply mitigations per vendor instructions or discontinue use of the product if mitigations are unavailable.
Public exploits

No public exploit or proof of concept found in the sources we track.

EPSS

84% chance of exploitation activity in the next 30 days, which ranks it in the 99th percentile of scored CVEs.

Exploit Prediction Scoring System, FIRST.org. A probability, not a confirmation.

Lifecycle

7 events over 590 days, from the signal feeds we watch.

  1. OpenVAS check added
  2. EPSS band changecritical → high
  3. Patch availablerecord updated
  4. Added to CISA KEVpublished, weakness classified

Affected products

And 56 more affected products. See all after sign-in

Technical detail

CVSS 3.1 vector

Open in the CVSS calculator

CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N

Scored 6.5 by NVD.

How it is reached

  • Attack Vector NetworkExploitable remotely over the network without any special conditions
  • Attack Complexity LowNo special conditions — the attack can be reliably reproduced
  • Privileges Required NoneNo authentication required — anyone can exploit this
  • User Interaction RequiredA user must click a link, open a file, or perform some action

Scope

  • Scope UnchangedImpact is limited to the vulnerable component itself

Impact if exploited

  • Confidentiality HighTotal information disclosure — all data in the component is compromised
  • Integrity NoneNo integrity impact
  • Availability NoneNo availability impact

Weaknesses

Sources

References in the record

And 4 more references. See all after sign-in

Watch the software you run.

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We'll flag the next CVE, public exploit or patch for Microsoft Corp, not every advisory. This one: actively exploited.