CVE-2026-47241: Net::IMAP: Denial of Service via incomplete raw argument validation

unknownCVE-2026-47241

CSIRTS triage

Denial of service

What: There is a denial of service vulnerability via incomplete raw argument validation.
Who is affected: Deployments using affected IMAP services.
Urgency: Remediation is necessary but the severity is currently unknown.
Action: Monitor for updates regarding CVE-2026-47241.

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

Details

Source: Microsoft Security Response Center (INTL · vendor-psirt · site)
Severity: unknown
Published: 2026-06-09
Exploitation: Not in CISA KEV at last sync

Original advisory: https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-47241

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-2026-472410.24% 30-day exploitation probability — currently an unlikely target, but scores change as exploit code circulates. Riskier than 15% of all scored CVEs.

Referenced CVEs

CVE	CSIRTS overview	External
CVE-2026-47241	coverage & exploitation status	NVD · CVE.org

Same CVEs, other sources

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

lowGHSA-c4fp-cxrr-mj66: Net::IMAP: Denial of Service via incomplete raw argument validationghsa

Recent advisories for Net

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.

unknownCVE-2026-55780: NanaZip is the 7-Zip derivative intended for the modern Windows experience. Prior to 6.5.1749.…nvd · 2026-07-10
medium[UPDATE] [medium] Red Hat Enterprise Linux (ruby: net-imap): Multiple vulnerabilitiescert-bund · 2026-07-10
medium[UPDATE] [medium] Golang Go-Module (Net, Image, Crypto): Multiple Vulnerabilitiescert-bund · 2026-07-10
highCVE-2026-54784: CoreWCF is a port of the service side of Windows Communication Foundation (WCF) to .NET Core. …nvd · 2026-07-08
highCVE-2026-54783: CoreWCF is a port of the service side of Windows Communication Foundation (WCF) to .NET Core. …nvd · 2026-07-08
criticalCVE-2026-54782: CoreWCF is a port of the service side of Windows Communication Foundation (WCF) to .NET Core. …nvd · 2026-07-08