Teams vulnerabilitiesAnd the versions its exploited flaws hit.

Product1 known exploited6 versions
The short answer

Teams is made by Microsoft. We track 12 published vulnerabilities in it, across 6 versions. 1 of them is on the list of flaws known to be exploited, the newest added on 13 September 2023. If you run Teams, check your version against the exploited flaws below and patch those first.

Check your version

The most recent Teams flaw added to the known-exploited list is CVE-2023-4863, on 13 September 2023. We keep watching the known-exploited list.

Versions

Which versions of Teams do the exploited flaws hit?

Each exploited flaw lists the versions it affects, usually as ranges. "before 1.6.00.26463" means every version up to, but not including, 1.6.00.26463. Find your version, then patch.

  • CVE-2023-4863Exploited list, 13 Sep 2023

    Google Chromium WebP Heap-Based Buffer Overflow Vulnerability

    before 1.6.00.26463before 1.6.00.26474
Known exploited

Which Teams vulnerabilities are being exploited?

1 flaw is 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.

  1. 8.8
    CVE-2023-4863HighKnown exploited
    Google Chromium WebP Heap-Based Buffer Overflow Vulnerability

    Google Chromium WebP contains a heap-based buffer overflow vulnerability that allows a remote attacker to perform an out-of-bounds memory write via a crafted HTML page.

    Chance of use>99%Known exploited since13 Sep 2023
Exploit likelihood

Which Teams 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.

50% or more10% to 49%Under 10%
  1. >99%
    CVE-2023-4863HighKnown exploited

    Heap buffer overflow in libwebp in Google Chrome prior to 116.0.5845.187 and libwebp 1.3.2 allowed a remote attacker to perform an out of bounds memory write via a crafted HTML page.

    CVSS8.8Published12 Sep 2023
  2. 17%

    Microsoft Teams for iOS Spoofing Vulnerability

    CVSS6.5Published13 Aug 2024
  3. 4.6%

    Untrusted search path vulnerability in The installer of Microsoft Teams allows an attacker to gain privileges via a Trojan horse DLL in an unspecified directory.

    CVSS7.8Published12 Mar 2019
  4. 3.2%

    Microsoft Teams iOS Information Disclosure Vulnerability

    CVSS5.7Published25 Feb 2021
  5. 3.0%

    Microsoft Teams Denial of Service Vulnerability

    CVSS7.5Published9 Feb 2022
  6. 2.3%

    The Microsoft Teams online service contains a stored cross-site scripting vulnerability in the displayName parameter that can be exploited on Teams clients to obtain sensitive information such as authentication...

    CVSS5.4Published9 Dec 2020
  7. 2.2%

    Microsoft Teams Remote Code Execution Vulnerability

    CVSS8.8Published8 Aug 2023
  8. 2.0%

    Microsoft Teams Remote Code Execution Vulnerability

    CVSS8.8Published8 Aug 2023
  9. 1.9%

    Microsoft Teams Remote Code Execution Vulnerability

    CVSS7.8Published11 Nov 2020
  10. 1.5%

    Microsoft Teams Information Disclosure Vulnerability

    CVSS6.5Published11 Jul 2023
EdgeProtect

Running Teams? We'll keep checking.

Looking flaws up one at a time doesn't scale. Tell us what you run once, and we tell you which flaws matter to you, in what order, and keep watching for new ones.

  1. Tell us what you runPick your software from a list, or let us work it out from your website.
  2. We match it to every flawOver 400,000 published flaws, checked against your list.
  3. Ranked by real-world riskA 0 to 100 score, led by evidence criminals are using it.
  4. Told as soon as we knowAn alert by email, in the app or by webhook to your own tools.

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FAQ

Common questions, answered plainly.

Something else? Talk to the team →

We track 12 published vulnerabilities listed under the name Teams, across 6 versions. The most recent Teams flaw added to the known-exploited list is CVE-2023-4863, on 13 September 2023.

1 is on the list of flaws known to be exploited. The most recently added is CVE-2023-4863.

Each flaw names its own versions, usually as ranges. The newest, CVE-2023-4863, affects before 1.6.00.26463, before 1.6.00.26474. The versions for every exploited flaw are listed on this page.

Create a EdgeProtect account and track Teams. 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.