CVE-2023-33131Microsoft Outlook Remote Code Execution Vulnerability
- 8.8HighCVSS base score
- 5.7%Exploitation in 30 daysEPSS · top 6.8% of all CVEs
- NoKnown exploitednot in CISA's KEV catalog
- 1Public exploitsMetasploit, Nuclei and Exploit-DB
Description
Microsoft Outlook Remote Code Execution Vulnerability
Public exploit
An exploit or proof of concept is public: anyone can try it against an unpatched system. The public collections list an Exploit-DB entry for it.
Show the exploits1
Exploit-DB1 entry
- Microsoft Outlook Microsoft 365 MSO (Version 2306 Build 16.0.16529.20100) 32-bit - Remote Code Execution (Exploit-DB entry) (opens in a new tab)
EDB-ID 51574remote, multiplepublished 7 Jul 2023Not verified
Modules, templates and exploits as listed by the Metasploit Framework (BSD-3-Clause), ProjectDiscovery's Nuclei templates (MIT) and the Exploit Database (GPLv2), read once a day. Where the data comes from
Timeline
ID reserved
By microsoft
- 27 days later
· 27 days later
Published
- 21 months later
· 21 months later
Record updated
Changes after publication (a new score, a public exploit, EPSS crossing 1, 10 or 50 %, leaving KEV) are kept since November 2026; earlier ones are not known.
Scores
| Scored by | CVSS | Score | Vector |
|---|---|---|---|
| microsoftCNA (assigner) | 3.1 | High8.8 | CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C |
| NVDNVD · Modified | 3.1 | High8.8 | CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H |
- EPSS (exploitation in 30 days)
- 5.7% · top 6.8% of all CVEs (13 Nov 2026)
- CISA SSVC
- Exploitation: none · Automatable: no · Technical impact: total
The list uses the assigner's score when there is one, then CISA's, then NVD's: High 8.8.
Affected products
Microsoft · Microsoft Office 2019
- affected 19.0.0 – < https://aka.ms/OfficeSecurityReleases
Microsoft · Microsoft 365 Apps for Enterprise
- affected 16.0.1 – < https://aka.ms/OfficeSecurityReleases
Microsoft · Microsoft Office LTSC 2021
- affected 16.0.1 – < https://aka.ms/OfficeSecurityReleases
Microsoft · Microsoft Outlook 2016
- affected 16.0.0.0 – < 16.0.5400.1000
Microsoft · Microsoft Outlook 2013
- affected 14.0.0 – < 15.0.5563.1000
Microsoft · Microsoft Outlook 2013 Service Pack 1
- affected 15.0.0.0 – < 15.0.5563.1000
References
Sources
The same CVE in the primary databases and aggregators, to check against.
- CVE.org record (opens in a new tab)
- CVE List JSON (GitHub) (opens in a new tab)
- NVD (opens in a new tab)
- FIRST EPSS (opens in a new tab)
- EUVD EUVD-2023-37317 (opens in a new tab)
- OSV.dev (opens in a new tab)
- GitHub Advisories (opens in a new tab)
- CIRCL Vulnerability-Lookup (opens in a new tab)
Badge for a README or a ticket
[](https://cveledger.app/cve/CVE-2023-33131)Record last updated .