CVE-2026-33824 KEVPublic exploit Critical · 9.8 EPSS 77.1%
Microsoft Internet Key Exchange (IKE) Service Extensions Double Free Vulnerability
Microsoft · Internet Key Exchange (IKE) Service Extensions
Summary
The flaw is a double free vulnerability in the Windows IKE Extension, part of Microsoft's Internet Key Exchange (IKE) Service Extensions. An unauthorized attacker with network access can exploit it without authentication or user interaction, which allows arbitrary code execution.
Official description · NVD
Double free in Windows IKE Extension allows an unauthorized attacker to execute code over a network.
Priority scorePatchfirst’s 0 to 100 ranking. It adds points for CISA KEV listing, ransomware use, EPSS, threat reports, public exploit code and CVSS. Every CVE page shows the breakdown. Breakdown
74.8 / 100
- Exploited
- Yes, in CISA KEV
- Reports
- 0
- Tactics
- 2/15
How an attack unfolds
Based on MITRE ATT&CKA public catalogue of the techniques attackers use, maintained by MITRE. Patchfirst uses it to describe what attackers do with a vulnerability. mappings. Select a step to see the evidence.Exploitation timelineDated milestones for a CVE: when it was disclosed, when exploit code became public, when exploitation was confirmed, and when threat reports named it.
First seen exploited 4 months after disclosure. Public exploit code (PoC-in-GitHub) appeared 7 days after disclosure.
- Disclosedday 0
- Public exploit codePoC-in-GitHub+7 days
- First seen exploitedVulnCheck KEV evidence+4 mo
- Added to CISA KEVEU database agrees+4 mo
CISA KEV listing is when exploitation was confirmed, not necessarily the first attack.
MITRE ATT&CKA public catalogue of the techniques attackers use, maintained by MITRE. Patchfirst uses it to describe what attackers do with a vulnerability. techniques
2 TechniqueOne specific attacker behaviour in MITRE ATT&CK, such as T1190 “Exploit Public-Facing Application”. IDs with a dot, like T1059.004, are sub-techniques., grouped by TacticThe attacker’s goal at a stage of an attack in MITRE ATT&CK, such as Initial Access or Persistence. Each technique belongs to one or more tactics. in kill-chain order, 2 cited passages 2ExecutionTA0002
Command and Scripting Interpreter T1059 Medium Confidence (technique links)How sure Patchfirst is that an ATT&CK technique applies to this CVE. High and medium links are shown by default; low ones come from early or generic mappings, text matching, or contradict the CVE’s details.
AI mapping from the description · primary impact
Successful exploit yields arbitrary code execution
allows an unauthorized attacker to execute code over a network
Lateral MovementTA0008
Exploitation of Remote Services T1210 Medium Confidence (technique links)How sure Patchfirst is that an ATT&CK technique applies to this CVE. High and medium links are shown by default; low ones come from early or generic mappings, text matching, or contradict the CVE’s details.
AI mapping from the description · how it is exploited
Network remote exploitation of IKE service
allows an unauthorized attacker to execute code over a network
Detection
0 rules for this CVE · 110 general rules for its techniquesRules for this CVE
0Sigma ruleAn open, vendor-neutral detection rule for log data. Security teams convert Sigma rules into searches for their own SIEM. that reference CVE-2026-33824 directly.CVE-specific rules are not available in this build. Search SigmaHQ ↗
General rules for this CVE’s techniques
These detect the technique in general, not this specific vulnerability.
Exploitation of Remote ServicesT121015 general rules
- Zerologon Exploitation Using Well-known Toolscriticalstable
- Audit CVE Eventcriticaltest
- WannaCry Ransomware Activitycriticaltest
- OMIGOD HTTP No Authentication RCE - CVE-2021-38647highstable
- Exploitation Attempt Of CVE-2020-1472 - Execution of ZeroLogon PoChightest
- Exploitation Attempt Of CVE-2023-46214 Using Public POC Codehightest
- HackTool - SharpWSUS/WSUSpendu Executionhightest
- Possible Exploitation of Exchange RCE CVE-2021-42321hightest
Command and Scripting InterpreterT105995 general rules
- HackTool - Sliver C2 Implant Activity Patterncriticaltest
- Lazarus Group Activitycriticaltest
- REvil Kaseya Incident Malware Patternscriticaltest
- Turla Group Lateral Movementcriticaltest
- Windows Defender AMSI Trigger Detectedhighstable
- Windows Defender Threat Detectedhighstable
- Abusable DLL Potential Sideloading From Suspicious Locationhightest
- Add Insecure Download Source To Wingethightest
Sigma rules © SigmaHQ, Detection Rule License 1.1; linked, not reproduced.
What security researchers reported
Not named in any threat report yetAlso mentioned in 48 community threat pulses (AlienVault OTX)
Weaker evidencePulses are indicator collections that anyone can publish. A mention is not confirmation of exploitation.
- Actively_Exploited_Kev | Oct 31, 202630 Oct 2026
- Actively_Exploited_Kev | Oct 30, 202629 Oct 2026
- Actively_Exploited_Kev | Oct 29, 202628 Oct 2026
- Actively_Exploited_Kev | Oct 28, 202627 Oct 2026
- Actively_Exploited_Kev | Oct 27, 202626 Oct 2026
- Actively_Exploited_Kev | Oct 24, 202623 Oct 2026
- 42 more on OTX