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    CVE-2023-23397

    Microsoft Outlook Elevation of Privilege Vulnerability

    Published:Mar 14, 2023
    Last Modified:Oct 27, 2025
    EPS:Mar 14, 2023
    EPSS Score:0.93702
    CVSS Score:9.8

    CISA Notification

    Description

    Microsoft Outlook Elevation of Privilege Vulnerability

    Required Action:

    Apply updates per vendor instructions.

    Notes:

    No extra notes provided.

    Due Date
    Apr 4, 2023
    1256 days ago
    Alert Date
    Mar 14, 2023
    1277 days ago

    Affected Products

    Vendor
    Microsoft
    Product
    365 Apps
    Vendor
    Microsoft
    Product
    Office
    Vendor
    Microsoft
    Product
    Office Long Term Servicing Channel
    Vendor
    Microsoft
    Product
    Outlook

    Exploits

    https://github.com/ahmedkhlief/CVE-2023-23397-POChttps://github.com/ahmedkhlief/CVE-2023-23397-POC-Using-Interop-Outlookhttps://github.com/alicangnll/CVE-2023-23397https://github.com/api0cradle/CVE-2023-23397-POC-Powershellhttps://github.com/BillSkiCO/CVE-2023-23397_EXPLOIThttps://github.com/BronzeBee/cve-2023-23397https://github.com/cleverg0d/CVE-2023-23397-PoC-PowerShellhttps://github.com/Cyb3rMaddy/CVE-2023-23397-Reporthttps://github.com/djackreuter/CVE-2023-23397-PoChttps://github.com/ducnorth2712/CVE-2023-23397https://github.com/Gilospy/CVE-2023-23397https://github.com/grn-bogo/CVE-2023-23397https://github.com/im007/CVE-2023-23397https://github.com/j0eyv/CVE-2023-23397https://github.com/jacquesquail/CVE-2023-23397https://github.com/ka7ana/CVE-2023-23397https://github.com/moneertv/CVE-2023-23397https://github.com/Muhammad-Ali007/OutlookNTLM_CVE-2023-23397https://github.com/P4x1s/CVE-2023-23397-POChttps://github.com/Phaedrik/CVE-2023-23397-POChttps://github.com/praneethnaidu1910-cmd/cve-2023-23397-purple-teamhttps://github.com/Pushkarup/CVE-2023-23397https://github.com/sarsaeroth/CVE-2023-23397-POChttps://github.com/SecCTechs/CVE-2023-23397https://github.com/sqrtZeroKnowledge/CVE-2023-23397_EXPLOIT_0DAYhttps://github.com/stevesec/CVE-2023-23397https://github.com/Symbolexe/CVE-2023-23397https://github.com/TheUnknownSoul/CVE-2023-23397-PoWhttps://github.com/tiepologian/CVE-2023-23397https://github.com/Trackflaw/CVE-2023-23397https://github.com/vlad-a-man/CVE-2023-23397https://github.com/Zeppperoni/CVE-2023-23397-Patchhttps://github.com/ZHOUCC-CPU/cve-2023-23397-detection-lab

    Common Attack Pattern Enumeration and Classification (CAPEC)

    CAPEC-10 Buffer Overflow via Environment Variables
    CAPEC-101 Server Side Include (SSI) Injection
    CAPEC-102 Session Sidejacking
    CAPEC-104 Cross Zone Scripting
    CAPEC-108 Command Line Execution through SQL Injection
    CAPEC-109 Object Relational Mapping Injection
    CAPEC-110 SQL Injection through SOAP Parameter Tampering
    CAPEC-120 Double Encoding
    CAPEC-13 Subverting Environment Variable Values
    CAPEC-135 Format String Injection
    CAPEC-136 LDAP Injection
    CAPEC-14 Client-side Injection-induced Buffer Overflow
    CAPEC-153 Input Data Manipulation
    CAPEC-182 Flash Injection
    CAPEC-209 XSS Using MIME Type Mismatch
    CAPEC-22 Exploiting Trust in Client
    CAPEC-23 File Content Injection
    CAPEC-230 Serialized Data with Nested Payloads
    CAPEC-231 Oversized Serialized Data Payloads
    CAPEC-24 Filter Failure through Buffer Overflow
    CAPEC-250 XML Injection
    CAPEC-261 Fuzzing for garnering other adjacent user/sensitive data
    CAPEC-267 Leverage Alternate Encoding
    CAPEC-28 Fuzzing
    CAPEC-3 Using Leading 'Ghost' Character Sequences to Bypass Input Filters
    CAPEC-31 Accessing/Intercepting/Modifying HTTP Cookies
    CAPEC-42 MIME Conversion
    CAPEC-43 Exploiting Multiple Input Interpretation Layers
    CAPEC-45 Buffer Overflow via Symbolic Links
    CAPEC-46 Overflow Variables and Tags
    CAPEC-47 Buffer Overflow via Parameter Expansion
    CAPEC-473 Signature Spoof
    CAPEC-509 Kerberoasting
    CAPEC-52 Embedding NULL Bytes
    CAPEC-53 Postfix, Null Terminate, and Backslash
    CAPEC-555 Remote Services with Stolen Credentials
    CAPEC-561 Windows Admin Shares with Stolen Credentials
    CAPEC-588 DOM-Based XSS
    CAPEC-60 Reusing Session IDs (aka Session Replay)
    CAPEC-63 Cross-Site Scripting (XSS)
    CAPEC-64 Using Slashes and URL Encoding Combined to Bypass Validation Logic
    CAPEC-644 Use of Captured Hashes (Pass The Hash)
    CAPEC-645 Use of Captured Tickets (Pass The Ticket)
    CAPEC-652 Use of Known Kerberos Credentials
    CAPEC-664 Server Side Request Forgery
    CAPEC-67 String Format Overflow in syslog()
    CAPEC-7 Blind SQL Injection
    CAPEC-701 Browser in the Middle (BiTM)
    CAPEC-71 Using Unicode Encoding to Bypass Validation Logic
    CAPEC-72 URL Encoding
    CAPEC-73 User-Controlled Filename
    CAPEC-78 Using Escaped Slashes in Alternate Encoding
    CAPEC-79 Using Slashes in Alternate Encoding
    CAPEC-8 Buffer Overflow in an API Call
    CAPEC-80 Using UTF-8 Encoding to Bypass Validation Logic
    CAPEC-81 Web Server Logs Tampering
    CAPEC-83 XPath Injection
    CAPEC-85 AJAX Footprinting
    CAPEC-88 OS Command Injection
    CAPEC-9 Buffer Overflow in Local Command-Line Utilities
    CAPEC-94 Adversary in the Middle (AiTM)

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    CVE-2026-81948 (CVSS 7.8) — Heap-based buffer overflow in Microsoft Office Excel allows an unauthorized attacker to execute code locally.…
    CVE-2026-81950 (CVSS 7.8) — Double free in Microsoft Office Excel allows an unauthorized attacker to execute code locally.…
    CVE-2026-81949 (CVSS 7.8) — Integer overflow or wraparound in Microsoft Office Excel allows an unauthorized attacker to execute code local…
    CVE-2026-81953 (CVSS 7.8) — Stack-based buffer overflow in Microsoft Office Excel allows an unauthorized attacker to execute code locally.…
    CVE-2026-81959 (CVSS 7.8) — Heap-based buffer overflow in Microsoft Office Excel allows an unauthorized attacker to execute code locally.…
    CVE-2026-81952 (CVSS 8.8) — Heap-based buffer overflow in Microsoft Office Word allows an unauthorized attacker to execute code over a net…

    Common Vulnerability Scoring System

    Attack Vector
    Network
    Adjacent
    Local
    Physical
    Privileges Required
    None
    Low
    High
    User Interaction
    None
    Required
    Scope
    Unchanged
    Changed
    Confidentiality
    None
    Low
    High
    Integrity
    None
    Low
    High
    Availability
    None
    Low
    High