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CVE-2026-26147

HIGH 7.7

Published 2026-05-22 · Last modified 2026-06-19

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

ELEVATED IMPACT

Severe if exploited (CVSS 7.7), but no known exploitation and low modeled probability. Patch on a normal cadence.

Exploitation likelihood

0.6%chance of exploitation in 30 days · 43rd percentile

○ In CISA KEV ○ Public exploit / PoC

Impact if exploited

7.7CVSS 3.1 · HIGH

  • ConfidentialityHigh
  • IntegrityNone
  • AvailabilityNone

What an attacker needs

  • ✓Access: Reachable over the network — no local access needed
  • ⚠Privileges: Requires a low-privilege account
  • ✓User interaction: No user interaction needed
  • ✓Complexity: No special conditions — reliably repeatable

✓ lowers the bar for an attacker · ⚠ raises it

Affected

Vendors Microsoft

Products Azure Stack Hci

Weakness (CWE)

  • CWE-20: Improper input validation

CVSS vector

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

References

Patches & mitigations

Sources: NVD · CVE.org · EPSS