5.3

CVE-2026-23822: arubanetworks arubaos XML Entity Expansion

CVSS: 5.3v3.1MediumAnalyzed
Published 12-05-2026Last modified 12-05-2026
Open JSON

Vulnerability summary

CVE-2026-23822 is a medium (CVSS 5.3) XML Entity Expansion vulnerability in arubanetworks arubaos. EPSS estimates a 0.26% chance of exploitation in the next 30 days, higher than 17.1% of scored vulnerabilities.

Overall risk
21/100
0100
Low · default modelHow is this calculated?
CVSS score
5.3/10
010
Medium · v3.1 (CVE.org)
EPSS score
0.26%
0%100%
Low · 0.00 pp in 30 days
KEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits0No public exploits recorded

Timeline

  1. 12-05-2026
    PublishedVulnerability first disclosed.
  2. 12-05-2026
    Last modifiedVulnerability information updated.

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 metrics

2 scores · 2 sources · 1 version

EPSS trend

Probability

0.26%

Chance of exploitation in the next 30 days

Percentile

17%

Versus all other CVEs

30-day change

0.00 pp

From 0.26% on 21-09-2026

21-09-202621-10-2026
EPSS score
0.26%

Known exploited

Compare KEV catalogs

Not in any of the 3 tracked catalogs.

Public exploits

0 found

No public exploits indexed.

Weaknesses

CWE · root cause

Affected systems

Arubanetworks1 product
  • arubaos≥ 6.4.0.0, ≤ 6.5.4.24 | ≥ 8.4.0.0, < 8.10.0.22 | ≥ 8.11.0.0, < 8.12.0.7 | ≥ 8.13.0.0, < 8.13.1.2
Hewlett packard enterprise (hpe)1 product
  • arubaos (aos)≥ 8.13.0.0, ≤ 8.13.1.1 | ≥ 8.12.0.0, ≤ 8.12.0.6 | ≥ 8.10.0.0, ≤ 8.10.0.21

2 vendors · 2 products

References

1 links