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CVE intelligence

CVE-2026-56852

Vulnerability intelligence

Published Jul 21, 2026Sources checked Oct 28, 2026
7.5HIGHCVSS out of 10
What this means

Review the available evidence

CVE-2026-56852 and is rated High severity with a CVSS score of 7.5. It is not in the current CISA KEV record we collected. That does not prove exploitation has not occurred.

What to do next

Remediation and response

Microsoft Security Response Center guidance

Vendor revision: Oct 22, 2026
Vendor remediation details

CBL-Mariner Releases

Vendor-listed releases

  • 1.5.0-2
  • 8.7.11-8
  • 2.2.4-6
  • 2.22.0-6
  • 2.7.5-19
  • 3.10.182-5
  • 25.0.3-19
  • 1.9.5-18
  • 1.7.7-6
  • 10.25.1-7
  • 1.12.15-10
  • 0.5.1-6
  • 1.62.0-7
  • 1.11.4-18
  • 1.32.0-7
  • 1.2.0-22
  • 0.14.0-16
  • 25.0.7-4
  • 2.27.0-13
  • 3.5.33-1
  • 0.24.2-29
  • 2.62.0-19
  • 3.6.1-5
  • 3.19.1.kata3-7
  • 3.15.0.aks0-16
  • 2.14.1-16
  • 0.0.10-7
  • 1.30.10-26
  • 1.7.1-8
  • 1.15.0-6
  • 1.7.7-16
  • 4.0.2-10
  • 0.63.0-5
  • 0.12.0-7
  • 1.7.0-5
  • 0.8.2-5
  • 1.14.4-12
  • 3.7.0-7
  • 1.31.0-25
  • 19.0.4-11
CISA KEVNot listedBased on the latest collected catalog
EPSS0.5%Estimated 30-day exploitation probability
Ransomware useNot markedCISA KEV ransomware field
Threat actors0Source-linked actor relationships
Overview

What is CVE-2026-56852?

A norm.Iter can enter an infinite loop when handling input containing invalid UTF-8 bytes.

Source: NVD