CVE-2026-1281: Ivanti Endpoint Manager Mobile (EPMM)

Should you act?

Exploited: patch now if you run it

CISA has confirmed exploitation in the wild. This signal is computed from CISA KEV, EPSS and CVSS data; it is not an editorial verdict.

Yes, if you run Ivanti Endpoint Manager Mobile (EPMM). CISA added this CVE to its Known Exploited Vulnerabilities catalog on 2026-01-29, which means there is reliable evidence of exploitation in the wild. US federal agencies must remediate by 2026-02-01; treat that as the outer limit, not the target.
EPSS 98.7%, percentile 99.9: FIRST’s model estimates a 98.7% chance of exploitation activity in the next 30 days, higher than 99.9% of all scored CVEs (very high). EPSS is a probability, not a verdict.
Remotely reachable with no login and no user interaction. If the vulnerable service is exposed to the internet, prioritize it.
Editorial verdict: Act now. Ivanti EPMM Zero-Day RCE: CVE-2026-1281 and CVE-2026-1340 — On-premises Ivanti EPMM was open to unauthenticated remote command execution, exploited before disclosure and with a public PoC a day later; patch, confirm the RPM survived any later upgrade, and hunt for compromise.

What it is

A code injection in Ivanti Endpoint Manager Mobile allowing attackers to achieve unauthenticated remote code execution.

CISA’s summary

Ivanti Endpoint Manager Mobile (EPMM) contains a code injection vulnerability that could allow attackers to achieve unauthenticated remote code execution.

Weakness type: CWE-94.

Product: Ivanti Endpoint Manager Mobile (EPMM) · Assigned by: ivanti · Published: 2026-01-29

Affected and fixed versions

Vendor	Product	Affected versions (per CVE record)
Ivanti	Endpoint Manager Mobile	see vendor advisory

Severity scores

Scored by	CVSS	Score	Vector
ivanti	3.1	9.8 Critical	`CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H`

Attack vector: network (remotely reachable)
Attack complexity: low
Privileges required: none (no login)
User interaction: none
Scope: unchanged

CVSS measures how bad a flaw is if exploited, not how likely exploitation is. Read it next to the exploitation data below.

Exploitation and urgency

CISA KEV: added 2026-01-29; federal due date 2026-02-01. Known ransomware use: Unknown.
CISA required action: Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable.
CISA SSVC assessment: exploitation active, automatable yes, technical impact total.
FIRST EPSS (model of 2026-10-21): 98.69% probability of exploitation activity in the next 30 days; percentile 99.9.

Timeline

2026-01-29 — Added to CISA’s Known Exploited Vulnerabilities catalog
2026-01-29 — CVE record published by ivanti
2026-01-29 — erroneo.us brief: Ivanti EPMM Zero-Day RCE: CVE-2026-1281 and CVE-2026-1340
2026-02-01 — CISA remediation deadline for US federal agencies
2026-10-07 — CVE record last updated

Sources and references

Original sources first. Version and fix details should always be confirmed against the vendor or project advisory.