Threats / Ivanti / CVE-2021-44529
CVE-2021-44529
· EUVD no mirror located
· GCVE no mirror located
Verified 2026-09-19
Ivanti Endpoint Manager Cloud Service Appliance (EPM CSA) vulnerability
Ivanti Endpoint Manager Cloud Service Appliance contains an unauthenticated code injection vulnerability allowing remote execution with limited privileges, actively exploited in ransomware campaigns.
Verdict
Today item, not a backlog item.
An unauthenticated attacker can inject and execute arbitrary code on the appliance. The vulnerability has been weaponized in ransomware operations and carries high exploitation likelihood. Immediate patching is critical for affected deployments.
CISA KEV Yes · 2024-03-255Ransomware use Flagged5EPSS 0.99105 (verify live)6Exploit Weaponized · public PoC7CVSS 9.8 (CISA)4CISA SSVC Exploitation: active · Automatable: yes · Impact: total4
01
Is it exploitable?
— the evidence, ranked above the scoreExploit available
Fully weaponized — public exploit code is cataloged for this vulnerability.We link the existence of the exploit; we do not host or redistribute payloads.
Reported exploitation
9 independent public reports of in-the-wild exploitation are cataloged.Distinct reporting sources (vendor, incident response, government); open them for the underlying claims.
Exploited in the wild
Listed in the CISA Known Exploited Vulnerabilities catalog (added 2024-03-25), flagged for known ransomware use.
Probability (EPSS)
EPSS 0.99105 — modeled likelihood of exploitation activity.EPSS is a daily-changing model output — open the source for today's value.
Severity / affected
CVSS 9.8 (CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H) · Affected: Ivanti, Endpoint Manager Cloud Service Appliance (EPM CSA). Confirm exact fixed builds in the vendor advisory.CVSS — CISA-assigned via the ADP container (CVE.org), version 3.1; the CNA left no metrics, so CISA's own score is used ahead of NVD.
Weakness (CWE)
Mapped to CWE-94 Code Injection — weakness family: Injection.CWE — CNA-assigned (CVE.org); the weakness class drives how the flaw is exploited.
CISA SSVC (triage disposition)
Exploitation: active · Automatable: yes · Technical Impact: totalCISA's own stakeholder-specific triage inputs, published in the CVE record (CISA Coordinator role). NOTE: this is CISA's three decision points; the final Act/Attend/Track decision also requires a Mission & Well-being input not published here, so no overall decision is asserted.
Currency of the record
CISA added this to its KEV catalog 838 days after the CVE record was published.KEV lag = CISA-KEV dateAdded − CVE.org datePublished; a floor on how long the known-exploited flaw sat in the public record before the federal catalog listed it. Severity/weakness here is CNA- or CISA-assigned (current at disclosure), independent of NVD's analysis backlog.
Public exploit available
Public exploit tooling is catalogued for this CVE (a functional/weaponized public exploit). Catalog entries: Metasploit module, nuclei template. We link the catalog page(s) only — no payload or code is hosted or restated here.Link, never host — the catalog page is the source; basicsecurity.net does not redistribute payloads.
02
Who’s exploiting it?
— attribution turns risk into urgencyAttribution not established
No confirmed (advisory-backed) threat-actor attribution is established for this record. Absence of a named actor is not absence of compromise — see Coverage & confidence.
03
Why it matters
— the attack path, told twice: adversary, then board1
Front door — unauthenticated access narrative 1
Attacker
I craft a malicious payload and send it to the unauthenticated endpoint without credentials.
Business
The organization's endpoint management infrastructure is directly exposed to remote code execution from the internet.
2
Keys to the kingdom — privilege/identity takeover narrative 2
Attacker
I execute code with limited nobody privileges to establish persistence and pivot within the network.
Business
Attackers gain a foothold in the management layer, enabling lateral movement to managed endpoints and sensitive systems.
3
Lateral reach — past segmentation narrative 3
Attacker
I deploy ransomware payloads across the compromised appliance and connected endpoints.
Business
The organization faces widespread encryption of critical systems, operational shutdown, and extortion demands.
04
What to do
— defensible action- Remediate per the vendor advisory — confirm the fixed build for your version and verify exposure.1
Say it to the boardA vulnerability with this evidence profile is a defensible budget line, not a backlog ticket — fund the change against the proof above.
05
Coverage & confidence
— what we know, and what we don’tEstablished (cited)
Coverage gaps — stated, not hidden
Disclosure & credit2
Catalogued by hackeroneCNA
Credited with finding itNo finder is named in the public CVE record or the scanned vendor advisory — attribution scoped to the sources checked.
Found an error? Propose a correction.
A correction is a cited counter-claim — it must cite a source,
gets reviewed by a second human, and is never auto-applied. See the
correction convention and our identity
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