Multiple vulnerabilities in Microsoft Azure Linux (June 24, 2026)

unknownCVE-2026-53689 CVE-2026-43973

Multiple vulnerabilities have been discovered in Microsoft Azure Linux. They allow an attacker to cause an unspecified security issue by the vendor.

CSIRTS triage

vendor: Microsoft product: Azure LinuxOther

What: Multiple vulnerabilities allow an attacker to cause an unspecified security issue.
Who is affected: Deployments of Microsoft Azure Linux.
Urgency: Remediation is necessary due to the potential for security issues, though severity is unknown.
Action: Monitor for updates from Microsoft regarding these vulnerabilities.

AI-assisted analysis generated from the source advisory — verify against the original.

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Details

Source: CERT-FR Avis de sécurité (FR · national-cert · site)
Severity: unknown
Published: 2026-06-24
Exploitation: Not in CISA KEV at last sync
Language: Machine-translated to English — verify against the original

Original advisory: https://www.cert.ssi.gouv.fr/avis/CERTFR-2026-AVI-0798/

Exploitation outlook

EPSS (FIRST.org) estimates each CVE’s probability of exploitation in the next 30 days — here is the CSIRTS.com read on those numbers.

Low exploitation riskCVE-2026-536890.21% 30-day exploitation probability — currently an unlikely target, but scores change as exploit code circulates. Riskier than 11% of all EPSS-scored CVEs.
Low exploitation riskCVE-2026-439730.48% 30-day exploitation probability — currently an unlikely target, but scores change as exploit code circulates. Riskier than 39% of all EPSS-scored CVEs.

Referenced CVEs

CVE	CSIRTS overview	External
CVE-2026-53689	coverage & exploitation status	NVD · CVE.org
CVE-2026-43973	coverage & exploitation status	NVD · CVE.org

Same CVEs, other sources

How other CERTs, PSIRTs and databases cover the vulnerabilities in this advisory.

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A cluster of recent advisories against the same product widens the attack surface — attackers routinely chain freshly published CVEs on one product, so review these together.

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