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Medium severity · published May 12, 2026
CVE-2026-23822
Unauthenticated XML External Entity Injection in AOS-8 Instant allows Denial of Service
5.3
CVSS
0.3%
EPSS
No
On KEV
Description
A vulnerability in the XML handling component of AOS-8 DHCP services could allow an unauthenticated remote attacker to trigger a denial-of-service condition. Successful exploitation could allow an attacker to cause excessive resource consumption upon user interaction, leading to service disruption or reduced availability of the affected system. NOTE: This vulnerability only impacts Access Points running AOS Instant 8.x.x.x
CVSS vector
CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:N/I:N/A:H
Attack vector
Network
Complexity
High
Privileges
None
User interaction
Required
Confidentiality
None
Integrity
None
Availability
High
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.3% · higher than 18% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
AA
ArubaOS (AOS) · Hewlett Packard Enterprise (HPE)
8.13.0.0 through 8.13.1.1; 8.12.0.0 through 8.12.0.6; 8.10.0.0 through 8.10.0.21 · source: vendor
AR
Arubaos · Arubanetworks
6.4.0.0 through 6.5.4.24; 8.4.0.0 before 8.10.0.22; 8.11.0.0 before 8.12.0.7; 8.13.0.0 before 8.13.1.2 · source: NVD
Affected product
AA
ArubaOS (AOS)
Hewlett Packard Enterprise (HPE)
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-23822
CVE.org
https://www.cve.org/CVERecord?id=CVE-2026-23822
Vendor Advisory
https://support.hpe.com/hpesc/public/docDisplay?docId=hpesbnw05049en_us&docLocale=en_US
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