Cyber Resilience

CVE-2023-28342

DoS in Zohocorp Manageengine Adselfservice Plus 4.5 … 6.2

High EPSSDoS
Published
05 April 2023
Modified
13 February 2025
Patch / advisory
CVSS Score v3.1 7.5
Click a component to see what it means
Raw vectorCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
EPSS Score 0.78 99.5th percentile
Risk Priority 83 floored blend · peak EPSS

Summary

CVE-2023-28342 is a high-severity Uncontrolled Resource Consumption (CWE-400) vulnerability in Zohocorp Manageengine Adselfservice Plus. Its CVSS base score is 7.5 (High).

Operationally, exploitation aligns with the MITRE ATT&CK technique OS Exhaustion Flood (T1499.001); ranked in the top 0.5% of CVEs by exploit likelihood; it is not currently listed in the CISA KEV catalog.

Deeper analysis AI-assisted summary

Synthesised by an AI model from the NVD description and linked references — a reading aid, not an authoritative source.

Zoho ManageEngine ADSelfService Plus versions prior to 6218 contain a vulnerability in the Mobile App Authentication API that permits unauthenticated remote attackers to trigger a denial-of-service condition. The flaw is reflected in a CVSS 3.1 base score of 7.5 with network attack vector, low complexity, and no required privileges or user interaction, resulting in high impact to availability while leaving confidentiality and integrity unaffected.

An attacker with network access can send crafted requests to the exposed Mobile App Authentication API endpoint, exhausting resources and rendering the service unavailable to legitimate users. Because the API does not enforce authentication, exploitation requires no valid credentials or prior interaction with the target system.

Vendor advisory information published at manageengine.com directs administrators to upgrade ADSelfService Plus to release 6218 or later to address the issue. The EPSS score for this CVE rose from lower values to a peak of 0.8545 on 2025-12-11 before receding to the current 0.5856, indicating a period of increased exploitation interest after disclosure.

EU & UK References

Vulnerability Data

Zoho ManageEngine ADSelfService Plus before 6218 allows anyone to conduct a Denial-of-Service attack via the Mobile App Authentication API.

CWE(s)

Related Threats

MITRE ATT&CK Enterprise Techniques

T1499.001 OS Exhaustion Flood Impact
Adversaries may launch a denial of service (DoS) attack targeting an endpoint's operating system (OS).
T1498 Network Denial of Service Impact
Adversaries may perform Network Denial of Service (DoS) attacks to degrade or block the availability of targeted resources to users.
T1499 Endpoint Denial of Service Impact
Adversaries may perform Endpoint Denial of Service (DoS) attacks to degrade or block the availability of services to users.
T1499.002 Service Exhaustion Flood Impact
Adversaries may target the different network services provided by systems to conduct a denial of service (DoS).
T1499.003 Application Exhaustion Flood Impact
Adversaries may target resource intensive features of applications to cause a denial of service (DoS), denying availability to those applications.
Derived from this CVE’s CWE(s) via the direct CWE→ATT&CK cross-walk.

CVEs Like This One

CVE-2025-11250Same product: Zohocorp Manageengine Adselfservice Plus
CVE-2025-1723Same product: Zohocorp Manageengine Adselfservice Plus
CVE-2021-33256Same product: Zohocorp Manageengine Adselfservice Plus
CVE-2021-40539Same product: Zohocorp Manageengine Adselfservice Plus
CVE-2024-27310Same product: Zohocorp Manageengine Adselfservice Plus
CVE-2023-35719Same product: Zohocorp Manageengine Adselfservice Plus
CVE-2024-0252Same product: Zohocorp Manageengine Adselfservice Plus
CVE-2025-3833Same product: Zohocorp Manageengine Adselfservice Plus
CVE-2022-28810Same product: Zohocorp Manageengine Adselfservice Plus
CVE-2023-26601Same product class: network monitoring / SIEM

Affected Assets

zohocorp
manageengine adselfservice plus
4.5, 5.0, 5.0.6, 5.1, 5.2

Mitigating Controls

Likely Mitigating Controls AI

Per-CVE control mapping for this CVE has not run yet; the list below is derived from the weakness types (CWEs) cited in the NVD entry.

addresses: CWE-400

Limiting concurrent sessions directly prevents uncontrolled resource consumption by capping the number of active sessions per user or account.

addresses: CWE-400

Analysis identifies uncontrolled resource consumption indicative of denial-of-service or abuse attempts.

addresses: CWE-400

Contingency plan testing includes resource exhaustion scenarios to verify recovery, making it harder for attackers to sustain exploits that cause uncontrolled consumption.

addresses: CWE-400

Updated contingency plans include current procedures to detect, contain, and recover from resource exhaustion, limiting an attacker's ability to sustain impact from uncontrolled consumption.

addresses: CWE-400

Alternate site allows resumption of operations if resource exhaustion at the primary site is exploited to cause unavailability.

addresses: CWE-400

Alternate telecommunications services enable resumption of essential functions when primary services become unavailable due to uncontrolled resource consumption.

addresses: CWE-400

The team can analyze and respond to resource exhaustion incidents, reducing the impact of attacks that exploit uncontrolled consumption weaknesses.

addresses: CWE-400

Timely maintenance support and spare parts enable rapid recovery from failures induced by uncontrolled resource consumption, shortening the impact window of denial-of-service attacks.

Mitigating Controls (NIST CSF 2.0) AI

Derived directly from the weakness types (CWEs) cited in the NVD entry via our AI-authored CWE→CSF cross-walk (authority under review) — links open the control.

PR.IR-04 mostly match
prevents

Explicitly requires monitoring and maintaining resource capacity, directly addressing uncontrolled consumption to preserve availability.

DE.CM-09 partial match
prevents

Continuous monitoring of computing resources can detect resource exhaustion but does not itself enforce allocation limits.

PR.IR-03 partial match
prevents

Resilience mechanisms such as avoiding single points of failure indirectly reduce impact of resource exhaustion.

PR.PS-01 partial match
prevents

Hardened configuration baselines can include resource quotas and limits that constrain consumption.

Mitigating Controls (ISO/IEC 27001:2022 Annex A) AI

Derived directly from the weakness types (CWEs) cited in the NVD entry via our AI-authored CWE→ISO cross-walk (authority under review) — links open the control.

finds

Resource-utilization monitoring and alerting on bottlenecks or overloads limits the impact of denial-of-service or resource-exhaustion attacks.

prevents

By continuously monitoring utilization, stress-testing peak loads, and maintaining documented plans to scale or throttle resources, the control directly limits an attacker’s ability to drive a system into uncontrolled resource exhaustion.

finds

Pre-agreed severity-based prioritization and resource allocation during incident triage reduce the likelihood that an attacker-induced resource exhaustion will overwhelm the organization before corrective action is taken.

mitigates

Business-continuity plans that include resource-management controls reduce the likelihood that an attacker can trigger uncontrolled resource consumption by forcing the system into a degraded or fallback state.

mitigates

Defining RTOs and capacity requirements for ICT services during business-impact analysis forces organizations to provision sufficient resources and throttling mechanisms, reducing the likelihood that an attacker can induce denial-of-service through uncontrolled resource consumption.

finds

Early notification of anomalous resource consumption or system malfunctions enables throttling or isolation before availability is lost.

References