CVE Intelligence
Medium Denial of service

CVE-2026-23596 — Unauthenticated Improper Access Control in management API allows unauthorized service disruption

A vulnerability in the management API of the affected product could allow an unauthenticated remote attacker to trigger service restarts. Successful exploitation could allow an attacker to disrupt services and negatively impact system availability.

Published Feb 17, 2026 · Updated Oct 13, 2026 · Sources: NIST National Vulnerability Database, CVE Program (cve.org) e CISA ADP · CNA: hpe

Who exploits it and how urgent it is

A 0–100 score combining confirmed exploitation, ransomware and APT use, public exploits, EPSS and severity.

No exploitation signal in the sources consulted so far.
How the score was calculated
  • EPSS 0.2% (30-day exploitation probability)+2
  • Technical severity (medium)+3

The score orders the patch queue; it does not replace your asset context (internet exposure, criticality, compensating controls).

Triage

Is it exploited, how likely is exploitation, what does it touch, and how severe do the sources call it.

Exploitation
Not confirmed
Not in CISA KEV — an absence of record, not proof it is unexploited.
EPSS FIRST
0.24%
ahead of 14% of scored CVEs · Oct 14, 2026
Affects
Hewlett Packard Enterprise (HPE)
HPE Aruba Networking Private 5G Core and 1 more
CVSS base
6.5
Medium · 2 source(s)

CISA SSVC assessment CISA

Three decision points CISA publishes for the CVEs it assesses (SSVC 2.0.3). A stakeholder decision, not a severity score.

Exploitation
None
none · proof-of-concept · active
Automatable
No
can an attacker script the kill-chain steps
Technical impact
Partial
partial · total control of the vulnerable component

Remediation

Fixes and mitigations documented by the sources — linked to the original advisory.

  • Documented patch — support.hpe.com (NIST National Vulnerability Database)

First 24 hours

Ordered from the record’s own fields — exposure first, because you cannot patch what you have not found. A rule-generated starting point.

  1. Identify exposed assets running the affected vendor/product/version combinations (Hewlett Packard Enterprise (HPE) HPE Aruba Networking Private 5G Core, Hpe Aruba Networking Private 5g Core).
  2. Apply the fixed version or the patch documented under Remediation.
  3. Search available logs for exploit probes matching the vulnerability class (denial of service), errors and authentication anomalies.

Affected scope

Vendor, product and versions as the sources word them.

VendorProductVersionsStatusSource
Hewlett Packard Enterprise (HPE) HPE Aruba Networking Private 5G Core ≥ 1.24.3.0 and ≤ 1.24.3.4 Vulnerable CVE Program (cve.org) e CISA ADP
Hpe Aruba Networking Private 5g Core ≥ 1.24.3.0 and ≤ 1.24.3.3 Vulnerable NIST National Vulnerability Database

Attack characteristics

The CVSS vector, decoded. It describes the attack, not your exposure to it.

Attack vector
Adjacent
Attack complexity
Low
Privileges required
None
User interaction
None
Scope
Unchanged
Confidentiality
None
Integrity
None
Availability
High

Every base score collected

Sources score independently and may disagree; each row says who scored it and under which version.

ScoreVersionSeverityExpl.ImpactScored by
6.5 CVSS 3.1 Medium 2.8 3.6 security-alert@hpe.com via NIST National Vulnerability Database
6.5 CVSS 3.1 Medium — — hpe via CVE Program (cve.org) e CISA ADP
CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H (score shown at the top: security-alert@hpe.com)

Weakness MITRE

Weakness class according to MITRE’s CWE catalog.

CWE-400 · Uncontrolled Resource Consumption

Other CVEs with this weakness →

EPSS over time FIRST

Oct 13, 2026 → Oct 14, 2026 · 2 reading(s) · max 0.24%

Detection

Read off the CVSS vector and the weakness class. Starting points, not tested rules.

  • Track CPU/memory spikes and availability drops correlated with request patterns.
resource metrics

Timeline

What happened to this CVE, newest first.

  • 2026
  • Affected products added · hewlett packard enterprise (hpe)/hpe aruba networking private 5g core
    Oct 13, 2026 · CVE Program (cve.org) e CISA ADP
  • SSVC assessment updated
    Oct 13, 2026 · CVE Program (cve.org) e CISA ADP
  • Record published
    Oct 13, 2026
  • Fix documented
    Oct 13, 2026 · NIST National Vulnerability Database
  • CVSS changed · 6.5
    Oct 13, 2026 · NIST National Vulnerability Database
  • Source status changed · → Analyzed
    Oct 13, 2026 · NIST National Vulnerability Database
  • Record created in this database
    Oct 13, 2026 · NIST National Vulnerability Database
  • CVE published
    Feb 17, 2026 · hpe

Source activity

Repeated readings are counted rather than listed.

  • 1× Official description updated · Oct 13, 2026 – Oct 13, 2026

References

1 on the record

Elsewhere on this site

Hewlett Packard Enterprise (HPE)
every CVE for this vendor
Denial of service
same class
CWE-400
other pages naming this weakness

Related CVEs (same products)

  • CVE-2026-23818 Open Redirect Vulnerability in HPE Aruba Networking Private 5G Core On-Prem Apr 7, 2026
  • CVE-2026-23597 Unauthenticated Information Disclosure in application API allows sensitive system information exposure Feb 17, 2026
  • CVE-2026-23598 Unauthenticated Information Disclosure in application API allows sensitive system information exposure Feb 17, 2026
  • CVE-2026-23595 Unauthenticated Authentication Bypass in application API allows unauthorized administrative account creation Feb 17, 2026

Not in any source we poll

Listed rather than left blank: an empty field and an unmeasured one look identical on screen, and only one is a reason to look elsewhere.

  • No confirmed IOCs, IP addresses, domains, file hashes, or malware artifacts supplied.
  • No organization-specific asset inventory, compensating-control status, or patch deployment evidence supplied.
  • No exploit packet captures, log samples, or incident case IDs supplied.

Answered from this record

Text assembled only from the fields above — no additional claims.

What should defenders know first?

CVE-2026-23596 is "Unauthenticated Improper Access Control in management API allows unauthorized service disruption", rated Medium. It affects HPE Aruba Networking Private 5G Core (Hewlett Packard Enterprise (HPE)); versions are in the scope table. It is not in CISA KEV, which does not rule out exploitation. CVSS 6.5 describes technical severity. EPSS 0.24% estimates the probability of exploitation in 30 days; neither replaces your asset context. First verify whether exposed or business-critical assets run the affected versions, apply vendor fixes or mitigations, and preserve logs for review.

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