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Microsoft tracks unauthenticated command injection flaw CVE-2026-73570
Original: Unauthenticated command injection on internet-facing mail servers: tracking CVE-2026-73570
Microsoft says it is tracking CVE-2026-73570, a vulnerability described as unauthenticated command injection affecting internet-facing mail servers. The flaw could let remote attackers run commands without credentials, raising concerns of exploitation similar to past mail server incidents. Details on affected products and patches remain limited while tracking continues.
Why now: Security teams are monitoring a potentially exploitable flaw in internet-exposed mail servers that could enable remote code execution without authentication.
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- Unauthenticated command injection on internet-facing mail servers: tracking CVE-2026-73570 · Microsoft
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