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Multiple Vulnerabilities in Postfix (June 22, 2026)

unknown
Multiple vulnerabilities have been discovered in Postfix. They allow an attacker to cause a remote denial of service and an unspecified security issue by the vendor.

CSIRTS triage

vendor: Postfixproduct: PostfixDenial of serviceOther
What
Multiple vulnerabilities have been discovered in Postfix that can lead to denial of service.
Who is affected
Deployments of Postfix are affected.
Urgency
Remediation is urgent due to the potential for service disruption.
Action
Apply the latest security updates for Postfix.

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
2026-06-22
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-0793/

Recent advisories for Postfix

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.

More from CERT-FR Avis de sécurité