Memory corruption in Microsoft Outlook
Priority CRITICAL 93Exploited in the wildCWE-119Published · Updated
Key facts
- Attack vector
- Local
- Privileges required
- None
- User interaction
- Required
- Attack complexity
- Low
- Impact type
- Code execution
- Confidentiality · integrity · availability
- High · High · High
- Fix status
- No fix listed
Attack profile from CVSS 3.1 · CISA ADP. Fix status from CNA. Impact type from CWE-119 and the CVSS impact.
Summary
Microsoft Outlook 2010 SP2, Outlook 2013 SP1 and RT SP1, and Outlook 2016 allow an attacker to execute arbitrary commands, due to how Microsoft Office handles objects in memory, aka "Microsoft Outlook Security Feature Bypass Vulnerability."
Why it matters now
Exploitation Active In CISA KEV since 2021-11-03CISA due date 2022-05-03
EPSS 0.59627 99th percentileScored 2026-11-07
Public exploit Yes 1 exploit referenceTagged by NVD
Fix No fix listed No fixed version in the sources yet
SSVC decision points
CISA ADP · SSVC 2.0.3
- Exploitation
- Active
- Automatable
- No
- Technical impact
- Total
The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| Microsoft | Microsoft Outlook | Microsoft Outlook 2010 SP2; Outlook 2013 SP1 and RT SP1; Outlook 2016 | — | No fix listed | CNA |
- Microsoft Outlook VendorMicrosoft Affected Microsoft Outlook 2010 SP2; Outlook 2013 SP1 and RT SP1; Outlook 2016 Fixed in — No fix listed CNA
CPE configurations NVD · 4
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:a:microsoft:outlook:2010:sp2:*:*:*:*:*:* | 2010 sp2 | Vulnerable | Microsoft |
| cpe:2.3:a:microsoft:outlook:2013:sp1:*:*:-:*:*:* | 2013 sp1 | Vulnerable | Microsoft |
| cpe:2.3:a:microsoft:outlook:2013:sp1:*:*:rt:*:*:* | 2013 sp1 | Vulnerable | Microsoft |
| cpe:2.3:a:microsoft:outlook:2016:*:*:*:*:*:*:* | 2016 | Vulnerable | Microsoft |
- cpe:2.3:a:microsoft:outlook:2010:sp2:*:*:*:*:*:* Versions 2010 sp2 Vulnerable ·Microsoft
- cpe:2.3:a:microsoft:outlook:2013:sp1:*:*:-:*:*:* Versions 2013 sp1 Vulnerable ·Microsoft
- cpe:2.3:a:microsoft:outlook:2013:sp1:*:*:rt:*:*:* Versions 2013 sp1 Vulnerable ·Microsoft
- cpe:2.3:a:microsoft:outlook:2016:*:*:*:*:*:*:* Versions 2016 Vulnerable ·Microsoft
Remediation
No fixed version listed by the sources yet.
Timeline
- 2021-11-03 Added to CISA KEV
- 2026-10-02 Threatist record created from CVE-2017-11774
- 2026-10-03 Alias added: GHSA-9cq3-gr97-qxf7
References
More Microsoft Outlook vulnerabilities
- TI-2023-09240 Microsoft Outlook Elevation of Privilege Vulnerability KEVCVSS 3.1CRITICAL 9.8
- TI-2023-17652 Microsoft Outlook Security Feature Bypass Vulnerability KEVCVSS 3.1HIGH 8.8
- TI-2007-00655 Unspecified vulnerability in Microsoft Excel 2000, XP, 2003, and 2004 for Mac, and… KEVCVSS 3.1HIGH 8.8
- TI-2015-01471 Microsoft Word 2007 SP3, Office 2010 SP2, Word 2010 SP2, Word 2013 SP1, Word 2013 RT SP1… KEVCVSS 3.1HIGH 7.8
- TI-2006-04695 Stack-based buffer overflow in the Vector Graphics Rendering engine (vgx.dll), as used in… CVSS 2.0HIGH 9.3
- TI-2001-00524 Microsoft Outlook View ActiveX Control in Microsoft Outlook 2002 and earlier allows… CVSS 2.0HIGH 10.0
Sources
- CVE-2017-11774 · CVE Program
- CVE-2017-11774 · NVD
- CISA Known Exploited Vulnerabilities
- FIRST EPSS
- GHSA-9cq3-gr97-qxf7 · GitHub Advisory Database · CC BY 4.0
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