XXE in Arubanetworks Arubaos
CVE-2026-23822
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
Published · last modified .
CVSS v3 metric
CVSS v3 base score 5.3 (Medium). Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:N/I:N/A:H.
EPSS exploit prediction
EPSS: 0.003 (17.0th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 17th percentile — 17.0% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.003 · newest: 0.003 · change: 0.000
Affected products
- Arubanetworks Arubaos
- Hewlett Packard Enterprise (HPE) Arubaos (Aos) — versions 8.13.0.0, 8.12.0.0, 8.10.0.0
Weakness classification (CWE)
References
- support.hpe.com/hpesc/public/docDisplay (Vendor Advisory)
Frequently asked questions
- What is CVE-2026-23822?
- CVE-2026-23822 is a medium-severity vulnerability in Arubanetworks Arubaos, classified under Improper Restriction of Recursive Entity References in DTDs (XML Entity Expansion). CVSS score: 5.3/10. Published 2026-05-12.
- How severe is CVE-2026-23822?
- Medium severity. CVSS v3 base score is 5.3 out of 10.