Critical Microsoft Outlook Vulnerability Bug Update Now Microsoft has patched a critical remote code execution (rce)vulnerability in outlook that could allow attackers to execute malicious code on vulnerable systems. the flaw, tracked as cve 2025 62562, was released on december 9, 2025, and requires immediate attention from it administrators and end users. A critical rated outlook vulnerability has been confirmed by microsoft which has warned that exploitation is likely—here’s what you need to know and do.
Critical Microsoft Outlook Vulnerability Bug Update Now This morning, microsoft security response center (msrc) released information on a new vulnerability affecting microsoft outlook, labeled cve 2025 21361. while the obscure jumble of letters and numbers may not mean much at first, trust me, this vulnerability merits your full attention. These release notes provide information about security fixes that are included in updates to microsoft office. this information applies to microsoft 365 apps for enterprise, microsoft 365 apps for business, office 2019, office ltsc 2021, office 2021, office ltsc 2024, and office 2024. More recently, in june 2025, microsoft released patches for new critical rce vulnerabilities in outlook, including cve 2025 47171 and cve 2025 47176, which were discovered by morphisec. This “patch tuesday” is especially critical as it includes a fix for a zero day vulnerability – cve 2025 62221 – currently being exploited in the wild. this marks the culmination of a year where microsoft patched a record breaking 1,129 vulnerabilities, an 11.9% increase from 2024.
Critical Outlook Vulnerability And Emergency Update More recently, in june 2025, microsoft released patches for new critical rce vulnerabilities in outlook, including cve 2025 47171 and cve 2025 47176, which were discovered by morphisec. This “patch tuesday” is especially critical as it includes a fix for a zero day vulnerability – cve 2025 62221 – currently being exploited in the wild. this marks the culmination of a year where microsoft patched a record breaking 1,129 vulnerabilities, an 11.9% increase from 2024. Security researchers have shared technical details for exploiting a critical microsoft outlook vulnerability for windows (cve 2023 23397) that allows hackers to remotely steal hashed passwords by simply receiving an email. Microsoft recommends companies organizations block outbound smb port 445 traffic preventing ntlm authentication messages from being sent to remote file shares and adding users to the protected users security group restricting ntlm from being used as an authentication method. Cybersecurity firm check point has discovered a critical remote code execution (rce) vulnerability in microsoft outlook, which is currently being exploited in active cyberattacks, posing a significant threat to organizations worldwide. Ugcert has learnt of a critical microsoft outlook vulnerability, cve 2024 21413 and urges operators and the general public to secure their systems against ongoing cyberattacks due to this vulnerability.
Microsoft Outlook Cyber Security Vulnerability Nerds Support Security researchers have shared technical details for exploiting a critical microsoft outlook vulnerability for windows (cve 2023 23397) that allows hackers to remotely steal hashed passwords by simply receiving an email. Microsoft recommends companies organizations block outbound smb port 445 traffic preventing ntlm authentication messages from being sent to remote file shares and adding users to the protected users security group restricting ntlm from being used as an authentication method. Cybersecurity firm check point has discovered a critical remote code execution (rce) vulnerability in microsoft outlook, which is currently being exploited in active cyberattacks, posing a significant threat to organizations worldwide. Ugcert has learnt of a critical microsoft outlook vulnerability, cve 2024 21413 and urges operators and the general public to secure their systems against ongoing cyberattacks due to this vulnerability.
Critical Rce Bug In Microsoft Outlook Now Exploited In Attacks Cybersecurity firm check point has discovered a critical remote code execution (rce) vulnerability in microsoft outlook, which is currently being exploited in active cyberattacks, posing a significant threat to organizations worldwide. Ugcert has learnt of a critical microsoft outlook vulnerability, cve 2024 21413 and urges operators and the general public to secure their systems against ongoing cyberattacks due to this vulnerability.
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