CVE-2026-118527 KEV
Ivanti Connect Secure Generation of Predictable Numbers or Identifiers Vulnerability
Ivanti · Connect Secure
Official description · CISA KEV
Ivanti Connect Secure contains a generation of predictable numbers or identifiers vulnerability that allows a remote authenticated attacker to upload files with attacker-controlled content to a known location on disk. This vulnerability can be chained with CVE-2026-104935 and CVE-2026-111357.
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
45.0 / 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 the day it was disclosed.
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 2Initial AccessTA0001
Exploit Public-Facing Application T1190 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
remote upload via public-facing web application
allows a remote authenticated attacker to upload files
Command and ControlTA0011
Ingress Tool Transfer T1105 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
attacker-controlled file staged on disk
upload files with attacker-controlled content to a known location on disk
Detection
0 rules for this CVE · 236 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-2026-118527 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.
Exploit Public-Facing ApplicationT1190149 general rules
- Arcadyan Router Exploitationscriticaltest
- Citrix ADS Exploitation CVE-2020-8193 CVE-2020-8195criticaltest
- Citrix Netscaler Attack CVE-2019-19781criticaltest
- Confluence Exploitation CVE-2019-3398criticaltest
- CVE-2010-5278 Exploitation Attemptcriticaltest
- CVE-2020-0688 Exchange Exploitation via Web Logcriticaltest
- CVE-2020-10148 SolarWinds Orion API Auth Bypasscriticaltest
- CVE-2020-5902 F5 BIG-IP Exploitation Attemptcriticaltest
Ingress Tool TransferT110587 general rules
- Greenbug Espionage Group Indicatorscriticaltest
- Pandemic Registry Keycriticaltest
- Curl Download And Execute Combinationhightest
- File Download And Execution Via IEExec.EXEhightest
- File Download From IP Based URL Via CertOC.EXEhightest
- File Download Using Notepad++ GUP Utilityhightest
- File Download Via Bitsadmin To A Suspicious Target Folderhightest
- File Download Via Windows Defender MpCmpRun.EXEhightest
Sigma rules © SigmaHQ, Detection Rule License 1.1; linked, not reproduced.