Office Long Term Servicing Channel vulnerabilitiesAnd the versions its exploited flaws hit.
Office Long Term Servicing Channel is made by Microsoft. We track 173 published vulnerabilities in it, across 2 versions. 6 of them are on the list of flaws known to be exploited, the newest added on 6 February 2025. If you run Office Long Term Servicing Channel, check your version against the exploited flaws below and patch those first.
The most recent Office Long Term Servicing Channel flaw added to the known-exploited list is CVE-2024-21413, on 6 February 2025. We keep watching the known-exploited list.
Which versions of Office Long Term Servicing Channel do the exploited flaws hit?
Each exploited flaw lists the versions it affects, as published by the vendor. Find your version, then patch.
- CVE-2024-21413Exploited list, 6 Feb 2025
Microsoft Outlook Improper Input Validation Vulnerability
2021 - CVE-2024-38189Exploited list, 13 Aug 2024
Microsoft Project Remote Code Execution Vulnerability
2021 - CVE-2023-36761Exploited list, 12 Sep 2023
Microsoft Word Information Disclosure Vulnerability
2021 - CVE-2023-35311Exploited list, 11 Jul 2023
Microsoft Outlook Security Feature Bypass Vulnerability
2021 - CVE-2023-23397Exploited list, 14 Mar 2023
Microsoft Office Outlook Privilege Escalation Vulnerability
2021 - CVE-2021-42292Exploited list, 17 Nov 2021
Microsoft Excel Security Feature Bypass
2021
Which Office Long Term Servicing Channel vulnerabilities are being exploited?
6 flaws are on the government list of vulnerabilities known to be exploited. These are the ones criminals are using now, so they go first, whatever their severity score says.
- 9.8Microsoft Outlook Improper Input Validation Vulnerability
Microsoft Outlook contains an improper input validation vulnerability that allows for remote code execution.
- 8.8Microsoft Project Remote Code Execution Vulnerability
Microsoft Project contains an unspecified vulnerability that allows for remote code execution via a malicious file.
- 6.5Microsoft Word Information Disclosure Vulnerability
Microsoft Word contains an unspecified vulnerability that allows for information disclosure.
- 8.8Microsoft Outlook Security Feature Bypass Vulnerability
Microsoft Outlook contains a security feature bypass vulnerability that allows an attacker to bypass the Microsoft Outlook Security Notice prompt.
- 9.8Microsoft Office Outlook Privilege Escalation Vulnerability
Microsoft Office Outlook contains a privilege escalation vulnerability that allows for a NTLM Relay attack against another service to authenticate as the user.
- 7.8Microsoft Excel Security Feature Bypass
A security feature bypass vulnerability in Microsoft Excel would allow a local user to perform arbitrary code execution.
Which Office Long Term Servicing Channel flaws are most likely to be used?
Ranked by the latest exploit-likelihood forecast: the chance each flaw is used in an attack in the next 30 days. A high severity score on its own doesn't tell you that. Flaws shared by many other makers' products are left out.
- 97%
Microsoft Outlook Elevation of Privilege Vulnerability
- 95%
Microsoft Outlook Remote Code Execution Vulnerability
- 85%CVE-2023-21716Critical
Microsoft Word Remote Code Execution Vulnerability
- 57%CVE-2023-36041High
Microsoft Excel Remote Code Execution Vulnerability
- 54%CVE-2023-32029High
Microsoft Excel Remote Code Execution Vulnerability
- 44%CVE-2023-33133High
Microsoft Excel Remote Code Execution Vulnerability
- 43%
Microsoft Excel Security Feature Bypass Vulnerability
- 30%CVE-2023-36413Medium
Microsoft Office Security Feature Bypass Vulnerability
- 22%CVE-2022-35742High
Microsoft Outlook Denial of Service Vulnerability
- 20%CVE-2024-38200Medium
Microsoft Office Spoofing Vulnerability
Running Office Long Term Servicing Channel? We'll keep checking.
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1 flaw being exploited affects software Acme tracks
Microsoft Outlook contains an improper input validation vulnerability that allows for remote code execution. Successful exploitation of this vulnerability would allow an attacker to bypass the Office Protected View and open in editing mode rather than protected mode.
- Matched to
- Office Long Term Servicing Channel on Acme's software list
- What to do
- Patch first, then check for signs of use
Sent to the alert recipients Acme chose. Also in the app and to Acme's webhook.
We track 173 published vulnerabilities listed under the name Office Long Term Servicing Channel, across 2 versions. The most recent Office Long Term Servicing Channel flaw added to the known-exploited list is CVE-2024-21413, on 6 February 2025.
6 are on the list of flaws known to be exploited. The most recently added are CVE-2024-21413, CVE-2024-38189 and CVE-2023-36761.
Each flaw names its own versions, usually as ranges. The newest, CVE-2024-21413, affects 2021. The versions for every exploited flaw are listed on this page.
Create a Precursor Intelligence account and track Office Long Term Servicing Channel. We match it against every published flaw, give each one a risk score from 0 to 100 and keep watching, so you hear about new ones as soon as we know, by email, in the app or by webhook.