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NVD / CVE Program· CNA microsoft

CVE-2026-33824: Windows Internet Key Exchange (IKE) Service Extensions Remote Code Execution Vulnerability

CriticalCVSS 9.8 · v3.1KEVWeaponized Fix available

Noroxi assessment

Priority: Now (action score 92/100)

  • CISA has confirmed exploitation in the wild (Aug 18, 2026). Remediation deadline for US federal agencies: Aug 21, 2026.
  • Probability of exploitation in the next 30 days: 77.3% (FIRST EPSS); higher than 99.5% of all records.
  • Anyone who can reach it over the internet can trigger it. No account or password is required. No user action is required. No special conditions are required; it is repeatable.
  • According to CISA the attack is automatable: targets can be found by mass scanning.
  • Fixed version: Windows 10 Version 1607 for 32-bit Systems 10.0.14393.9060; Windows 10 Version 1607 for x64-based Systems 10.0.14393.9060; Windows 10 Version 1809 for 32-bit Systems 10.0.17763.8644.

Patch today or shut off access. Upgrade to Windows 10 Version 1607 for 32-bit Systems 10.0.14393.9060; Windows 10 Version 1607 for x64-based Systems 10.0.14393.9060; Windows 10 Version 1809 for 32-bit Systems 10.0.17763.8644 or later.

Generated automatically from the record's data: CVSS (NVD and CNA), CISA KEV and SSVC, FIRST EPSS, exploit sources, fixed versions. How we calculate it

Primary sources: NVD · CVE.org · CISA KEV · FIRST EPSS

Double free in Windows IKE Extension allows an unauthorized attacker to execute code over a network.

Published
Apr 14, 2026
Updated
Oct 15, 2026
EPSS
77.3% · 99th percentile

Report tools

JSON

Action score

92

Now

Patch today or shut off access.

CVSS
39 / 40 · 9.8 / 10
CISA KEV
30 / 30 · Listed
EPSS
23 / 30 · 77.3%

CISA SSVC decision

Exploitation
active
Automatable
yes
Technical impact
total

Vulnrichment: CISA's decision-tree inputs.

CNA vs NVD score

NVD
—
CNA · microsoft
9.8
NVD has not scored this yet; the score shown is the CNA’s.

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C

The score given by the assigning authority versus NVD’s independent score. A gap means the severity is contested.

Actively exploited in the wild

CISA added this to its Known Exploited Vulnerabilities catalog on Aug 18, 2026. That signals real attacks, not theory.

Remediation deadline for US federal agencies: Aug 21, 2026.

Get told when this record changes

  • In CISA KEV: exploitation in the wild confirmed
  • Weaponized exploit exists
  • A fix has been released

If any of these changes, we'll tell you in the daily email digest.

Follow CVE-2026-33824

When you'll hear from us

  • when it enters CISA KEV
  • when exploit code appears or is weaponized
  • when the record is updated (including a fixed version)
  • when EPSS rises 20 points in a week

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Noroxi analysis

What does it mean in your environment?

The assessment above is generated automatically from the record's data; it doesn't know your environment. Our team verifies on your systems whether this vulnerability is actually exploitable and which mitigation is enough.

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Affected systems

Is your version affected?

Pick the product and type the version you run. It's compared with this record's version ranges in your browser; the version isn't sent anywhere.

VendorProduct
microsoftwindows 10 1607
microsoftwindows 10 1809
microsoftwindows 10 21h2
microsoftwindows 10 22h2
microsoftwindows 11 23h2
microsoftwindows 11 24h2
microsoftwindows 11 25h2
microsoftwindows 11 26h1
microsoftwindows server 2016
microsoftwindows server 2019
microsoftwindows server 2022
microsoftwindows server 2022 23h2

and 1 more

Versions reported by the vendor

Affected version ranges reported by the assigning authority (microsoft). Independent of NVD's CPE analysis and usually ahead of it.

  • Microsoft Windows 10 Version 1607

    • 10.0.14393.0 and later · before 10.0.14393.9060affected

  • Microsoft Windows 10 Version 1809

    • 10.0.17763.0 and later · before 10.0.17763.8644affected

  • Microsoft Windows 10 Version 21H2

    • 10.0.19044.0 and later · before 10.0.19044.7184affected

  • Microsoft Windows 10 Version 22H2

    • 10.0.19045.0 and later · before 10.0.19045.7184affected

  • Microsoft Windows 11 version 23H2

    • 10.0.22631.0 and later · before 10.0.22631.6936affected

  • Microsoft Windows 11 Version 23H2

    • 10.0.22631.0 and later · before 10.0.22631.6936affected

  • Microsoft Windows 11 Version 24H2

    • 10.0.26100.0 and later · before 10.0.26100.8246affected

  • Microsoft Windows 11 Version 25H2

    • 10.0.26200.0 and later · before 10.0.26200.8246affected

  • Microsoft Windows 11 version 26H1

    • 10.0.28000.0 and later · before 10.0.28000.1836affected

  • Microsoft Windows Server 2016

    • 10.0.14393.0 and later · before 10.0.14393.9060affected

  • Microsoft Windows Server 2016 (Server Core installation)

    • 10.0.14393.0 and later · before 10.0.14393.9060affected

  • Microsoft Windows Server 2019

    • 10.0.17763.0 and later · before 10.0.17763.8644affected
Affected versions · NVD (5)

NVD version ranges (for catalog products). Add the product to your stack with a version and matching uses these.

  • microsoft windows server 2016before 10.0.14393.9060
  • microsoft windows server 2019before 10.0.17763.8644
  • microsoft windows server 2022before 10.0.20348.5020
  • microsoft windows server 2022 23h2before 10.0.25398.2274
  • microsoft windows server 2025before 10.0.26100.32690

Same product

microsoft: all records

Other highest-scoring records for the same primary product.

  • CVE-2018-8174A remote code execution vulnerability exists in the way that the VBScript engine handles objects in memory, aka "Windows VBScript Engine…KEV
    86Now
  • CVE-2026-21510Windows Shell Security Feature Bypass VulnerabilityKEV
    83Now
  • CVE-2022-44698Windows SmartScreen Security Feature Bypass VulnerabilityKEV
    73This week

Published before and after this one in the same product

  • ← EarlierCVE-2026-25190Mar 10, 2026 · Windows GDI Remote Code Execution Vulnerability
    31Monitor
  • ← EarlierCVE-2026-26128Mar 10, 2026 · Windows SMB Server Elevation of Privilege Vulnerability
    31Monitor
  • Later →CVE-2026-0390Apr 14, 2026 · UEFI Secure Boot Security Feature Bypass Vulnerability
    26Monitor

Remediation

Which version to upgrade to

Fix versions compiled from the vendor, package registries and Microsoft. Verify the vendor's note before upgrading.

Product / packageFixed versionSource
Windows 10 Version 1607 for 32-bit Systems10.0.14393.9060 · KB5082198Microsoft (MSRC)
Windows 10 Version 1607 for x64-based Systems10.0.14393.9060 · KB5082198Microsoft (MSRC)
Windows 10 Version 1809 for 32-bit Systems10.0.17763.8644 · KB5082123Microsoft (MSRC)
Windows 10 Version 1809 for x64-based Systems10.0.17763.8644 · KB5082123Microsoft (MSRC)
Windows 10 Version 21H2 for 32-bit Systems10.0.19044.7184 · KB5082200Microsoft (MSRC)
Windows 10 Version 21H2 for ARM64-based Systems10.0.19044.7184 · KB5082200Microsoft (MSRC)
Windows 10 Version 21H2 for x64-based Systems10.0.19044.7184 · KB5082200Microsoft (MSRC)
Windows 10 Version 22H2 for 32-bit Systems10.0.19045.7184 · KB5082200Microsoft (MSRC)
Windows 10 Version 22H2 for ARM64-based Systems10.0.19045.7184 · KB5082200Microsoft (MSRC)
Windows 10 Version 22H2 for x64-based Systems10.0.19045.7184 · KB5082200Microsoft (MSRC)
Windows 11 Version 23H2 for ARM64-based Systems10.0.22631.6936 · KB5082052Microsoft (MSRC)
Windows 11 Version 23H2 for x64-based Systems10.0.22631.6936 · KB5082052Microsoft (MSRC)
Windows 11 Version 24H2 for ARM64-based Systems10.0.26100.8246 · KB5083769Microsoft (MSRC)
Windows 11 Version 24H2 for x64-based Systems10.0.26100.8246 · KB5083769Microsoft (MSRC)
Windows 11 Version 25H2 for ARM64-based Systems10.0.26200.8246 · KB5083769Microsoft (MSRC)
Windows 11 Version 25H2 for x64-based Systems10.0.26200.8246 · KB5083769Microsoft (MSRC)
Windows 11 Version 26H1 for ARM64-based Systems10.0.28000.1836 · KB5083768Microsoft (MSRC)
Windows 11 version 26H1 for x64-based Systems10.0.28000.1836 · KB5083768Microsoft (MSRC)
Windows Server 201610.0.14393.9060 · KB5082198Microsoft (MSRC)
Windows Server 2016 (Server Core installation)10.0.14393.9060 · KB5082198Microsoft (MSRC)
Windows Server 201910.0.17763.8644 · KB5082123Microsoft (MSRC)
Windows Server 2019 (Server Core installation)10.0.17763.8644 · KB5082123Microsoft (MSRC)
Windows Server 202210.0.20348.5020 · KB5082142Microsoft (MSRC)
Windows Server 2022 (Server Core installation)10.0.20348.5020 · KB5082142Microsoft (MSRC)
Windows Server 2022, 23H2 Edition (Server Core installation)10.0.25398.2274 · KB5082060Microsoft (MSRC)
Windows Server 202510.0.26100.32690 · KB5082063Microsoft (MSRC)
Windows Server 2025 (Server Core installation)10.0.26100.32690 · KB5082063Microsoft (MSRC)

Exploit status

Weaponized

A ready exploit tool or active in-the-wild use is known for this vulnerability. This should be your top priority.

Evidence

  • Proof-of-concept repository on GitHub ×2

Noroxi does not host or link to exploit code. Metasploit module names and Nuclei template ids are shown (names, not code); Exploit-DB entries and PoC repositories are given as counts only.

Public exploit evidence
SourceKindDate
Proof-of-concept repository on GitHubstars:22026-04-21
Proof-of-concept repository on GitHubstars:62026-05-18

Research context

For pentesters and researchers: attack profile, score disagreement, timeline, patch commits, credits, variant and chain candidates, bug bounty scope. All derived from existing data; no exploit code.

Timeline

From publication to today: proof of concept, Metasploit module, CISA KEV and fix record. Dates are as reported by the sources.

  1. Published
  2. First PoC+6 d
  3. CISA KEV+125 d
  4. TodayNov 14, 2026+213 d
EPSS, last 120 days

FIRST EPSS daily score; only changes of 0.01 or more are recorded (step chart).

Variant candidates

Same product, same weakness class, within 18 months. If the patch missed the root cause, the sibling bug is here.

  • CVE-2026-77493147 days apartWindows Graphics Component Remote Code Execution Vulnerability
    39Monitor
  • CVE-2026-96864182 days apartMicrosoft Failover Cluster Virtual Driver Remote Code Execution Vulnerability
    39Monitor
  • CVE-2026-77504147 days apartMicrosoft Office Word Remote Code Execution Vulnerability
    35Monitor
  • CVE-2026-70158182 days apartWindows Routing and Remote Access Service (RRAS) Remote Code Execution Vulnerability
    35Monitor
  • CVE-2026-62889119 days apartWindows Secure Socket Tunneling Protocol (SSTP) Remote Code Execution Vulnerability
    32Monitor
  • CVE-2026-69876147 days apartWindows DHCP Server Remote Code Execution Vulnerability
    32Monitor

Not on record for this CVE: patch commit or PR link · researcher credit · public bounty program.

Technical details

Attack conditions

  • Anyone who can reach it over the internet can trigger it.
  • No account or password is required.
  • No user action is required.
  • No special conditions are required; it is repeatable.

If successful

Confidentiality
high · data can be read
Integrity
high · data or configuration can be modified
Availability
high · the service can be disrupted
Attack vector
Network
Attack complexity
Low
Privileges required
None
User interaction
None
Scope
Unchanged
Confidentiality impact
High
Integrity impact
High
Availability impact
High

Weakness class (CWE)

CWE-415 · Double Free

CVSS vector

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

nvd-secondary

Attack context

MITRE CAPEC attack patterns and ATT&CK techniques for this weakness class (CWE). A starting point for detection rules and threat hunting.

MITRE has no CAPEC/ATT&CK mapping for this CWE.

References

Show all references (2 more)

Vendor advisories and official records. Exploit/PoC links are deliberately left out.

All records