CVE-2024-20670
CVE-2024-20670 is a high-severity vulnerability in Microsoft Outlook with a CVSS 3.x base score of 8.1. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-20.
Key facts
- Severity: High (CVSS 3.x base score 8.1)
- EPSS exploit prediction: 2% (81st percentile)
- Actively exploited: Not listed in CISA KEV
- EU (EUVD) id: EUVD-2024-18385
- Weakness: CWE-20
- Affected product: Microsoft Outlook
- Published:
- Last modified:
Description
Outlook for Windows Spoofing Vulnerability
Frequently asked questions
- What is CVE-2024-20670?
- Outlook for Windows Spoofing Vulnerability
- How severe is CVE-2024-20670?
- CVE-2024-20670 has a CVSS 3.x base score of 8.1, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and user interaction. Impact on confidentiality is high, integrity high, and availability none.
- Is CVE-2024-20670 being actively exploited?
- It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (81st percentile), an estimate of the probability of exploitation in the next 30 days.
- What products are affected by CVE-2024-20670?
- CVE-2024-20670 affects Microsoft Outlook. See the affected-products list for the exact vulnerable versions.
- How do I fix CVE-2024-20670?
- Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
- Does CVE-2024-20670 have an EU (EUVD) identifier?
- Yes. CVE-2024-20670 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2024-18385.
- When was CVE-2024-20670 published?
- CVE-2024-20670 was published on 2024-04-09 and last updated on 2026-06-17.
References
Affected products (1)
- cpe:2.3:a:microsoft:outlook:*:*:*:*:*:*:*:*
More vulnerabilities in Microsoft Outlook
- CVE-2001-0538 — Critical (CVSS 10.0): Microsoft Outlook View ActiveX Control in Microsoft Outlook 2002 and earlier allows remote attackers to execute…
- CVE-2023-23397 — Critical (CVSS 9.8): Microsoft Outlook Elevation of Privilege Vulnerability
- CVE-2013-3870 — Critical (CVSS 9.3): Double free vulnerability in Microsoft Outlook 2007 SP3 and 2010 SP1 and SP2 allows remote attackers to execute…
- CVE-2010-2728 — Critical (CVSS 9.3): Heap-based buffer overflow in Microsoft Outlook 2002 SP3, 2003 SP3, and 2007 SP2, when Online Mode for an Exchange…
- CVE-2010-0266 — Critical (CVSS 9.3): Microsoft Office Outlook 2002 SP3, 2003 SP3, and 2007 SP1 and SP2 does not properly verify e-mail attachments with a…
- CVE-2007-0033 — Critical (CVSS 9.3): Microsoft Outlook 2002 and 2003 allows user-assisted remote attackers to execute arbitrary code via a malformed VEVENT…
All CVEs affecting Microsoft Outlook →
Other CWE-20 (Improper Input Validation) vulnerabilities
- CVE-2026-48316 — Critical (CVSS 10.0): ColdFusion versions 2025.9, 2023.20 and earlier are affected by an Improper Input Validation vulnerability that could…
- CVE-2026-48281 — Critical (CVSS 10.0): ColdFusion versions 2025.9, 2023.20 and earlier are affected by an Improper Input Validation vulnerability that could…
- CVE-2026-48277 — Critical (CVSS 10.0): ColdFusion versions 2025.9, 2023.20 and earlier are affected by an Improper Input Validation vulnerability that could…
- CVE-2026-48055 — Critical (CVSS 10.0): Streambert is a cross-platform Electron Desktop App to stream and download any video media. In versions 2.4.0 and…
- CVE-2026-34910 — Critical (CVSS 10.0): A malicious actor with access to the network could exploit an Improper Input Validation vulnerability found in UniFi OS…
- CVE-2026-33587 — Critical (CVSS 10.0): Lack of user input sanitisation in Open Notebook v1.8.3 allows the application user to execute Python code (and…
Browse all CWE-20 (Improper Input Validation) vulnerabilities →