CriticalCVE-2023-35082

    Ivanti Endpoint Manager Mobile (EPMM) and MobileIron Core Authentication Bypass Vulnerability (CVE-2023-35082)

    Published In CISA KEV since Sources: SingCERT, pwn.watch, CVE.org

    What is affected, what to do

    An authentication bypass vulnerability in Ivanti EPMM 11.10 and older, allows unauthorized users to access restricted functionality or resources of the application without proper authentication. This vulnerability is unique to CVE-2023-35078 announced earlier.

    The vulnerability is being actively exploited; treat it as a priority. CISA lists it as used in ransomware campaigns. Update endpoint_manager_mobile to version 11.11.0. Immediate actions, mitigation and detection rules are in the runbook below.

    Affected
    • Ivanti EPMM lte 11.10..11.10

    Not sure whether and how you are affected? Ask a question about this vulnerability

    Metrics

    10.0

    Priority

    XIEM Effective CVSS: highest available CVSS rating from NVD and vendor data.

    Source: Vendor (CNA), CVSS v3

    10.0

    CVSS v3

    Severity Critical on the scale from 0 to 10.

    Source: SingCERT, pwn.watch, CVE.org

    —

    EPSS score

    No value is available for this vulnerability.

    Show all metrics
    Severity
    Critical
    Priority (0–325)

    The priority score is a consolidated metric that condenses several individual signals into a single, action-guiding ranking: technical severity (CVSS), exploitation likelihood (EPSS), known-exploited status (KEV) and the context of the affected asset. The aim is to answer the only truly important question in vulnerability management: what first?

    Read in glossary
    258.25 Methodology
    Exploit maturity

    An exploit is code or a technique that specifically uses a concrete vulnerability to force unintended behaviour — such as executing code or escalating privileges. It is the tool that turns a theoretical flaw into a practical attack.

    Read in glossary
    actively exploitedSource: ANSSI / CERT-FR, CSA/SingCERT How we classify
    XIEM Effective CVSS

    XIEM® is the tiered managed-security operating model from NEOSEC and a registered trademark of NEOSEC GmbH. It extends classic SIEM — the central collection, normalisation and correlation of security-relevant events — with endpoint forensics, network visibility and deception technology, and consolidates them into three building tiers: Sentry, Orchestrate and Command.

    Read in glossary
    10.0 Methodology
    CVSS v3

    CVSS is the globally established, open standard for assessing the technical severity of a vulnerability on a scale from 0 to 10. It describes how easily a flaw can be exploited and what damage it can cause — but not how likely its actual exploitation is. CVSS and the complementary EPSS deliberately answer different questions.

    Read in glossary
    10.0
    KEV status

    The KEV catalogue is a list maintained by the US authority CISA of vulnerabilities for which active exploitation in the wild has been confirmed. It answers not the question „how severe?“ but „is it already being attacked?“ — thereby sharply prioritising patching.

    Read in glossary
    Actively exploited
    Published
    In CISA KEV since

    The KEV catalogue is a list maintained by the US authority CISA of vulnerabilities for which active exploitation in the wild has been confirmed. It answers not the question „how severe?“ but „is it already being attacked?“ — thereby sharply prioritising patching.

    Read in glossary

    Response and mitigation

    Why act now?

    Prioritisation rationale

    This flaw is network-reachable without authentication or user interaction and gives direct access to administrative API functions. It sits on a system that is usually internet-facing and deeply integrated with AD, mail, and the mobile device fleet. Exploitation likelihood is among the highest of any CVE, and CISA flags known use in ransomware campaigns, which makes EPMM a proven entry point for data theft, lateral movement, and extortion. Government bodies, critical-infrastructure operators, and organisations with large managed mobile fleets are the typical targets. Treat any internet-reachable EPMM or MobileIron Core instance at 11.10 or older as a top-priority emergency, and assume it is compromised until proven otherwise.

    1. Runbook step 1

      Immediate response (0-24 h)

      • Inventory: Enumerate every Ivanti EPMM and MobileIron Core instance, including legacy and DMZ appliances. EPMM 11.10 and older is affected. Older MobileIron Core releases are end-of-life and will not receive fixes.
      • Patch: A fix is available from the vendor. Look up the exact version or RPM hotfix in the Ivanti advisory for CVE-2023-35082. For EOL Core deployments, migration to a supported EPMM release is mandatory.
      • Cut internet exposure now: Block /mifs/asfV3/api/v2/* at the upstream reverse proxy or WAF until the patch is applied. Restrict the admin portal (typically port 8443/tcp, MICS) to the management network only.
      • Check for compromise before patching: Preserve logs and take a snapshot or forensic image before you patch. Then hunt for new admin accounts, unexpected files in web directories, and web shells.
      • Rotate credentials: Reset all EPMM admin accounts, LDAP/AD service accounts stored in EPMM, and integration credentials (Exchange/ActiveSync, Sentry). The flaw exposes PII of managed users and devices.
      • Regulatory clock: If you find signs of exploitation, prepare the NIS2 early warning (24 h) to your national authority. Assess GDPR breach notification, since user and device data may be affected.

    2. Runbook step 2

      Mitigation layers

      • Network segmentation: Place EPMM in a dedicated DMZ zone. Allow egress only to the required destinations (Apple/Google push, Ivanti update servers, AD/LDAP). Deny everything else to block reverse shells and data exfiltration.
      • WAF/reverse proxy rule: Drop unauthenticated requests matching ^/mifs/(asfV3|aad)/api/v2/, or allow them only from trusted source ranges. This also covers the sibling CVE-2023-35078.
      • IPS signature: Enable the Suricata/ET rules for the Ivanti EPMM auth bypass (CVE-2023-35078/35082) in blocking mode. Alternatively, write a custom rule: http.uri; content:"/mifs/asfV3/api/v2/"; nocase; on inbound traffic to the EPMM VIP.
      • Break the chain: Public research shows this bug chained with the path-traversal CVE-2023-35081 (arbitrary file write) to achieve code execution. Verify that fix is installed as well, and monitor writes to web directories.
      • IAM/least privilege: Limit the AD service account configured in EPMM to read-only rights. Never grant it Domain Admin, and apply logon restrictions such as "Deny interactive logon".
      • Admin hardening: Require a jump host or VPN with MFA for admin portal access. Disable unused APIs in the EPMM configuration.

    3. Runbook step 3

      Detection rules

      • Web/proxy access logs: Look for requests to /mifs/asfV3/api/v2/ without prior authentication, especially HTTP 200 responses on endpoints such as admin/session, ping, or user enumeration. SPL: index=proxy uri_path="/mifs/asfV3/api/v2/*" | stats count by src_ip, uri_path, status
      • EPMM audit log: Watch for newly created or modified admin accounts, role changes, and bulk queries of user and device objects (names, phone numbers, email) outside maintenance windows.
      • Network telemetry (Zeek/Suricata): Flag outbound connections from the EPMM appliance to unfamiliar IPs or ASNs, unusually large upload volumes in conn.log, and DNS lookups for atypical domains.
      • Host/filesystem (where access exists): Look for new JSP or shell files under the appliance's Tomcat/web directories, and Java processes spawning sh, bash, curl, or wget (Sigma logic: ParentImage|endswith: java AND Image|endswith: [/sh, /bash, /curl]).
      • AD/domain controllers: Alert on anomalous logons by the EPMM service account (Event ID 4624, logon type 3/10, from non-EPMM hosts) and on bulk LDAP reads (Event ID 4662).

    Detection rules

    No NEOSEC detection rule is available for this vulnerability yet.

    Classification under NIS2 and CRA

    Rule-based classification from exploitation status and severity. It does not replace a case-by-case assessment.

    NIS2

    NIS2 is EU Directive (EU) 2022/2555 to raise the level of cybersecurity across the Union. It substantially broadens obligations compared with the first NIS directive: more sectors, mandatory risk management, staged reporting duties and personal accountability of senior management.

    Read in glossary
    Actively exploited: treat the vulnerability as a priority in vulnerability handling under Art. 21(2)(e) NIS2. If it is exploited in your environment, check the reporting obligation under Art. 23 (early warning within 24 hours).
    CRA

    The CRA is EU Regulation (EU) 2024/2847 setting horizontal cybersecurity requirements for „products with digital elements“ — from industrial controllers and software to connected consumer devices. For the first time manufacturers must ensure security across the entire product lifecycle, handle vulnerabilities and provide security updates.

    Read in glossary
    Since 11.09.2026, manufacturers of affected products with digital elements must report actively exploited vulnerabilities under Art. 14 CRA, with an early warning within 24 hours via ENISA's single reporting platform.
    ISO/IEC 27001

    ISO/IEC 27001 is the internationally leading standard for an information security management system (ISMS). It describes a risk-based, process-oriented framework to systematically plan, implement, review and improve information security.

    Read in glossary
    Control A.8.8, management of technical vulnerabilities: assess relevance to your systems, plan remediation and keep evidence.

    Description

    An authentication bypass vulnerability in Ivanti EPMM 11.10 and older, allows unauthorized users to access restricted functionality or resources of the application without proper authentication. This vulnerability is unique to CVE-2023-35078 announced earlier.

    Source: CSA/SingCERT, pwn.watch, NVD (NIST), cvelistv5, CISA KEV Catalog, CVE.org (MITRE)

    Affected products

    The following versions are affected. Older releases of the same product line are also vulnerable unless stated otherwise.

    Affected products
    Affected versionsFixed in
    IvantiEPMM
    • ≤ 11.10
    • —
    ivantiendpoint_manager_mobile
    • < 11.11.0
    • 11.11.0

    Vendors and products

    Public exploit references

    Publicly reported proof-of-concepts, exploit modules and detection templates for this vulnerability. NEOSEC links to the original sources only and does not provide any exploit code.

    Public exploit references
    CISA KEV CatalogCISA Known Exploited Vulnerability (opens in a new tab)cisa.govactively exploited
    CSA/SingCERTActive Exploitation of Critical Vulnerability in Ivanti Products (opens in a new tab)CSA/SingCERTactively exploited
    ANSSI / CERT-FRLicence Ouverte 2.0, as of CERTFR-2023-ALE-009 – [MàJ] Multiples vulnérabilités dans Ivanti Endpoint Manager Mobile (clôturée 2023-09-15) (opens in a new tab)cert.cyber.gouv.fractively exploited

    References & sources

    • forums.ivanti.coms/article/CVE-2023-35082-Remote-Unauthenticated-API-Access-Vuln…Vendor advisory
    • cisa.govknown-exploited-vulnerabilities-catalog?field_cve=CVE-2023-35082government-resource, US government resource
    • cert.cyber.gouv.frANSSI / CERT-FR: CERTFR-2023-ALE-009 – [MàJ] Multiples vulnérabilités dans Ivanti Endpoint Manager Mobile (clôturée 2023-09-15)cert-fr
    • pwn.watchpwn.watch: Ivanti Endpoint Manager Mobile (EPMM) and MobileIron Core Authentication Bypasspwn-watch
    • forums.ivanti.comIvanti advisory: CVE-2023-35082pwn-watch
    • NVD (NIST)NVD: CVE-2023-35082pwn-watch
    • cisa.govCISA Known Exploited Vulnerabilities Catalogpwn-watch
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