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Multiple vulnerabilities in Postfix (July 7, 2026)

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

CSIRTS triage

vendor: Postfixproduct: PostfixDenial of serviceOther
What
Multiple vulnerabilities allow for denial of service and unspecified security issues.
Who is affected
Deployments of Postfix are affected.
Urgency
The urgency is unclear due to the unknown severity of the vulnerabilities.
Action
Monitor for updates and apply patches as they become available.

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
2026-07-07
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-0842/

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