Azure Stack HCI Information Disclosure Vulnerability

published 2026-05-22 5 mo ago modified 2026-08-10 2 mo ago also EUVD-2026-31516

cvss: 7.7; version 3.1, CNA
cisa kev: Not listed; not in CISA's catalog
epss: 0.6%; EPSS 0.6% chance of exploitation in 30 days, percentile 47%
public exploits: 0; none known

Improper input validation in Azure Compute Gallery allows an authorized attacker to disclose information over a network.

Patch / fix

links 1

msrc.microsoft.com/update-guide/vulnerability/CVE-2026-26147 advisory

CISA SSVC

Exploitation: none
Automatable: no
Technical impact: partial
Assessed: 5 mo ago (2026-05-26)

Exploit prediction

0.58% chance of exploitation in the next 30 days, higher than 47% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by	version	score	vector
CNA	3.1	7.7	CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:N/A:N/E:U/RL:O/RC:C
CNA	3.1	7.7	CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:N/A:N

Affected products

Microsoft Azure Stack HCI

Classification

Weakness

CWE-20 Improper Input Validation

References

msrc.microsoft.com /update-guide/vulnerability/CVE-2026-26147
vendor-advisory, patch

Sources

CVE List CVE-2026-26147
NVD CVE-2026-26147

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.

Summary