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AutoPass License Server CVE-2026-23600

CRITICAL
Improper Authentication (CWE-287)
2026-03-02 security-alert@hpe.com
10.0
CVSS 4.0 · Vendor: hpe
View

Attack ChainAIDerived

Hypothetical attack flow derived from CVE metadata – not a confirmed exploit chain

  1. Access
    Reach exposed APLS service over network
  2. Exploit
    Send crafted request bypassing authentication
  3. Execution
    Obtain administrative access to license server
  4. Impact
    Read or tamper with licensing data and impact connected systems

Vulnerability Assessment

Weakness
CWE
MITRE ATT&CK

2 techniques across 2 tactics: Defense Evasion, Initial Access

The technique list with ATT&CK links and the kill-chain view is part of the Basic plan and up.

Exploitation Conditions

The CVSS 4.0 vector is AV:N/AC:L/AT:N/PR:N/UI:N, so there are no special conditions beyond network reachability - remote unauthenticated exploitation against HPE AutoPass License Server with no user interaction and low attack complexity. The primary limiting factor is network exposure: APLS is frequently deployed as an internal licensing service, so instances confined to trusted management networks are far less exposed than any that are internet- or DMZ-reachable. Exact affected versions are not specified in the provided data (CPE version is a wildcard), so version-based limits should be confirmed against HPE bulletin hpesbgn05003en_us.

Impact

The signals are partially conflicting and warrant careful reading. The CVSS 4.0 vector (AV:N/AC:L/AT:N/PR:N/UI:N with high vulnerable- and subsequent-system impact) describes the worst-case profile: network-reachable, low-complexity, no authentication, no user interaction, full compromise - which is why it scores 10.0. Against that, the EPSS score is low (0.24%, 46th percentile), the vulnerability is not on the CISA KEV list, and no public exploit has been identified, so there is currently no evidence of active or automated exploitation. A licensing server is often internal-facing, which reduces exposure, but where APLS is reachable from untrusted networks the pre-auth full-compromise nature means any operator - even a mid-sized municipal IT team in gdynia running it on an internet-exposed host - should treat patching as urgent rather than routine. Net assessment: genuinely high-priority for internet- or DMZ-exposed instances given the pre-auth maximal impact, but the low EPSS and absence of KEV/POC suggest the threat is presently latent rather than under mass exploitation.

Exploit ScenarioDerived

An attacker who can reach the APLS service over the network sends a crafted request that the server accepts without valid credentials, bypassing authentication and obtaining administrative access to the licensing platform. From there the attacker can read or alter licensing data and leverage the server's trusted position to affect connected HPE products. No public exploit code has been identified, so this scenario is currently theoretical based on the CVSS network/low-complexity/no-privilege profile.

Act Now Prioritize within 24-48h. Why: CRITICAL severity.
No patch listed yet 0.2% exploitation probability (EPSS)

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AnalysisAIv2 – Aug 10, 2026

Remote authentication bypass in HPE AutoPass License Server (APLS) allows unauthenticated network attackers to circumvent access controls and gain full administrative control over the licensing service, per HPE advisory hpesbgn05003en_us. The flaw (CWE-287, improper authentication) carries a maximum CVSS 4.0 base score of 10.0 with high confidentiality, integrity, and availability impact extending to subsequent systems. No public exploit identified at time of analysis, and the EPSS probability is currently low (0.24%).

Earlier versions of this analysis (1)
v1 Mar 12, 2026 - 21:55

A remote authentication bypass vulnerability

exists in HPE AutoPass License Server (APLS).

RemediationAI

Patch available per vendor advisory: apply the fixed AutoPass License Server release identified in HPE security bulletin hpesbgn05003en_us (https://support.hpe.com/hpesc/public/docDisplay?docId=hpesbgn05003en_us&docLocale=en_US); the exact fixed version is not present in the supplied data and must be taken from that advisory. Until the patched build is deployed, restrict network reachability of the APLS management and licensing ports to trusted management subnets only and remove any internet or DMZ exposure, since the flaw is remotely reachable and requires no authentication - the trade-off is that legitimate remote clients or distributed products relying on the license server must be whitelisted or routed through the trusted segment to avoid licensing outages. Place the server behind a VPN or firewall ACL and monitor authentication and administrative activity on the service for anomalous access as a detective compensating control.

Affects your stack

Find out whether the stacks and servers you run are on an affected version.

Checking this CVE against your own stacks and servers is part of the Basic plan and up.

Technical ContextAI · show details

HPE AutoPass License Server is a centralized software-licensing component that HPE bundles with numerous enterprise, network, and telecom management products to issue and validate product entitlements. The root cause is classified as CWE-287 (Improper Authentication), meaning the server accepts requests or sessions as trusted without correctly verifying the requester's identity - an authentication bypass rather than a credential-cracking or privilege-escalation issue. The affected component per the CPE string cpe:2.3:a:hpe:autopass_license_server covers all versions (wildcard), indicating the vendor has not scoped the flaw to a narrow build range in the machine-readable data.

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  • Exploit and PoC references, threat intelligence from 22 sources

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Severity by source

Vendor (hpe) PRIMARY 10.0 CRITICAL
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H
vuln.today AI 10.0 CRITICAL

Pre-auth network authentication bypass (PR:N/AC:L) with full impact reaching connected systems justifies S:C and C:H/I:H/A:H, matching the vendor's maximal score.

3.1 AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H
4.0 AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H

Primary rating from Vendor (hpe).

CVSS VectorVendor: hpe

Attack Vector
Network
Attack Complexity
Low
Attack Requirements
None
Privileges Required
None
User Interaction
None
Vulnerable system: Confidentiality
High
Vulnerable system: Integrity
High
Vulnerable system: Availability
High
Subsequent system: Confidentiality
High
Subsequent system: Integrity
High
Subsequent system: Availability
High

Lifecycle Timeline

3
CVSS changed
Aug 10, 2026 - 20:22 NVD
10.0 (CRITICAL)
CVE Published
Mar 02, 2026 - 15:16 cve.org
CRITICAL 10.0
CVE Published
Mar 02, 2026 - 15:16 nvd
N/A

DescriptionCVE.org

A remote authentication bypass vulnerability

exists in HPE AutoPass License Server (APLS).

Executive ViewAI

Why It Matters

HPE AutoPass License Server is vulnerable to a critical, unauthenticated remote authentication bypass (CVE-2026-23600, CVSS 10.0) that grants full administrative control to attackers on the licensing platform. Any organization operating this software faces immediate risk of losing control over software licensing, with potential impact to license compliance, cost controls, and dependent systems. No patch is currently available, requiring urgent compensating controls.

Business Impact: Severe
Compensating Controls

No vendor-released patch identified at time of analysis. Interim mitigations: restrict APLS network access via firewall to authorized administrative networks only; disable remote administrative access if operationally feasible; implement real-time monitoring and alerting for unauthorized administrative actions, license modifications, or suspicious API calls; maintain isolated, protected backup and recovery capabilities separate from the compromised APLS system; establish an incident response plan for rapid containment and recovery in the event of exploitation.

Threat Intelligence Overview

EPSS Score
0.2%
Top 54% exploitable
Prevalence
Low
niche HPE licensing component bundled with specific enterprise products
Data Quality
3 sources
Confidence: Low

How this decision was reached

The engine reads each signal below and applies a fixed list of rules from top to bottom. The first rule that matches sets the recommended action – like a statement, every line is shown.

SignalValue
Severity CRITICAL
CISA KEV No
Public POC No
EPSS 0.2%
Patch available No
Active threat No
Deciding rule
CRITICAL severity
What every action level means
Emergency Immediate action required. Criteria: CRITICAL + in CISA KEV (actively exploited) without patch, OR CRITICAL + EPSS > 30% without patch, OR CRITICAL + active threat signals without patch.
Act Now Prioritize within 24-48h. Criteria: in KEV with patch available, OR CRITICAL + public POC, OR HIGH + EPSS > 10%, OR CRITICAL + active threat, OR any CRITICAL severity.
This Week Schedule remediation this week. Criteria: HIGH severity (CVSS 7.0-8.9). Patch within normal change window.
This Month Plan within 30 days. Criteria: MEDIUM severity (CVSS 4.0-6.9), lower exploitation probability. Include in regular patch cycle.
Monitor Track and reassess. Criteria: LOW severity (CVSS 0.1-3.9), minimal exploitation risk. No immediate action needed.

SSVC AssessmentENISA

SSVC Decision· derived
Out-of-Cycle
Exploitation· derived
None
System Exposure· derived
Open
Automatable· derived
Yes
Human Impact
Very High

Priority Score

50
Low Medium High Critical
KEV: 0
EPSS: 0
CVSS: +50
PoC: 0
Weaponized: 0
Threat intel: 0
Gov advisory: 0

Attack Technique

Authentication bypass attacks exploit flaws in the verification mechanisms that control access to systems and applications.

Affected Products (CPE)CVE.org

cpe:2.3:a:hpe:autopass_license_server:*:*:*:*:*:*:*:*

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