ESXi vulnerabilitiesAnd the versions its exploited flaws hit.
ESXi is made by VMware. We track 138 published vulnerabilities in it, across 20 versions. 8 of them are on the list of flaws known to be exploited, the newest added on 4 March 2025. If you run ESXi, check your version against the exploited flaws below and patch those first.
The most recent ESXi flaw added to the known-exploited list is CVE-2025-22224, on 4 March 2025. We keep watching the known-exploited list.
Which versions of ESXi do the exploited flaws hit?
Each exploited flaw lists the versions it affects, usually as ranges. "before 7.0" means every version up to, but not including, 7.0. Find your version, then patch.
- CVE-2025-22224Exploited list, 4 Mar 2025
VMware ESXi and Workstation TOCTOU Race Condition Vulnerability
7.0-beta7.07.0-update_1a7.0-update_1b7.0-update_17.0-update_1c7.0-update_1d7.0-update_1e - CVE-2025-22226Exploited list, 4 Mar 2025
VMware ESXi, Workstation, and Fusion Information Disclosure Vulnerability
7.0-beta7.07.0-update_1a7.0-update_1b7.0-update_17.0-update_1c7.0-update_1d7.0-update_1e - CVE-2025-22225Exploited list, 4 Mar 2025
VMware ESXi Arbitrary Write Vulnerability
7.0-beta7.07.0-update_1a7.0-update_1b7.0-update_17.0-update_1c7.0-update_1d7.0-update_1e - CVE-2024-37085Exploited list, 30 Jul 2024
VMware ESXi Authentication Bypass Vulnerability
7.08.0-a8.0-b8.08.0-c8.0-update_1a8.0-update_18.0-update_1c - CVE-2023-29552Exploited list, 8 Nov 2023
Service Location Protocol (SLP) Denial-of-Service Vulnerability
before 7.0 - CVE-2010-3904Exploited list, 12 May 2023
Linux Kernel Improper Input Validation Vulnerability
3.54.04.15.0 - CVE-2020-3992Exploited list, 3 Nov 2021
VMware ESXi OpenSLP Use-After-Free Vulnerability
6.56.5-26.5-650-2017010016.5-650-2017030016.5-650-2017030026.5-650-2017040016.5-650-2017071016.5-650-201707102 - CVE-2019-5544Exploited list, 3 Nov 2021
VMware ESXi and Horizon DaaS OpenSLP Heap-Based Buffer Overflow Vulnerability
6.06.0-1a6.0-1b6.0-16.0-26.0-3a6.0-36.0-600-201504401
Which ESXi vulnerabilities are being exploited?
8 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.
- 9.3VMware ESXi and Workstation TOCTOU Race Condition Vulnerability
VMware ESXi and Workstation contain a time-of-check time-of-use (TOCTOU) race condition vulnerability that leads to an out-of-bounds write.
- 7.1VMware ESXi, Workstation, and Fusion Information Disclosure Vulnerability
VMware ESXi, Workstation, and Fusion contain an information disclosure vulnerability due to an out-of-bounds read in HGFS.
- 8.2VMware ESXi Arbitrary Write Vulnerability
VMware ESXi contains an arbitrary write vulnerability.
- 6.8VMware ESXi Authentication Bypass Vulnerability
VMware ESXi contains an authentication bypass vulnerability.
- 7.5Service Location Protocol (SLP) Denial-of-Service Vulnerability
The Service Location Protocol (SLP) contains a denial-of-service (DoS) vulnerability that could allow an unauthenticated, remote attacker to register services and use spoofed UDP traffic to conduct a...
- 7.8Linux Kernel Improper Input Validation Vulnerability
Linux Kernel contains an improper input validation vulnerability in the Reliable Datagram Sockets (RDS) protocol implementation that allows local users to gain privileges via crafted use of the sendmsg and recvmsg...
- 9.8VMware ESXi OpenSLP Use-After-Free Vulnerability
VMware ESXi OpenSLP contains a use-after-free vulnerability that allows an attacker residing in the management network with access to port 427 to perform remote code execution.
- 9.8VMware ESXi and Horizon DaaS OpenSLP Heap-Based Buffer Overflow Vulnerability
VMware ESXi and Horizon Desktop as a Service (DaaS) OpenSLP contains a heap-based buffer overflow vulnerability that allows an attacker with network access to port 427 to overwrite the heap of the OpenSLP service to...
Which ESXi 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%
OpenSLP as used in ESXi and the Horizon DaaS appliances has a heap overwrite issue.
- 94%CVE-2017-5753Medium
Systems with microprocessors utilizing speculative execution and branch prediction may allow unauthorized disclosure of information to an attacker with local user access via a side-channel analysis.
- 83%CVE-2009-3733Medium
Directory traversal vulnerability in VMware Server 1.x before 1.0.10 build 203137 and 2.x before 2.0.2 build 203138 on Linux, VMware ESXi 3.5, and VMware ESX 3.0.3 and 3.5 allows remote attackers to read arbitrary...
- 83%
OpenSLP as used in VMware ESXi (7.0 before ESXi_7.0.1-0.0.16850804, 6.7 before ESXi670-202010401-SG, 6.5 before ESXi650-202010401-SG) has a use-after-free issue.
- 64%
The Service Location Protocol (SLP, RFC 2608) allows an unauthenticated, remote attacker to register arbitrary services.
- 45%CVE-2021-21974High
OpenSLP as used in ESXi (7.0 before ESXi70U1c-17325551, 6.7 before ESXi670-202102401-SG, 6.5 before ESXi650-202102101-SG) has a heap-overflow vulnerability.
- 28%CVE-2010-0211Critical
The slap_modrdn2mods function in modrdn.c in OpenLDAP 2.4.22 does not check the return value of a call to the smr_normalize function, which allows remote attackers to cause a denial of service (segmentation fault)...
- 27%
VMware ESXi contains an authentication bypass vulnerability.
- 18%CVE-2016-5330High
Untrusted search path vulnerability in the HGFS (aka Shared Folders) feature in VMware Tools 10.0.5 in VMware ESXi 5.0 through 6.0, VMware Workstation Pro 12.1.x before 12.1.1, VMware Workstation Player 12.1.x before...
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1 flaw being exploited affects software Acme tracks
VMware ESXi and Workstation contain a time-of-check time-of-use (TOCTOU) race condition vulnerability that leads to an out-of-bounds write. Successful exploitation enables an attacker with local administrative privileges on a virtual machine to execute code as the virtual machine's VMX process running on the host.
- Matched to
- ESXi 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 138 published vulnerabilities listed under the name ESXi, across 20 versions. The most recent ESXi flaw added to the known-exploited list is CVE-2025-22224, on 4 March 2025.
8 are on the list of flaws known to be exploited. The most recently added are CVE-2025-22224, CVE-2025-22226 and CVE-2025-22225.
Each flaw names its own versions, usually as ranges. The newest, CVE-2025-22224, affects 7.0-beta, 7.0, 7.0-update_1a, 7.0-update_1b and more. The versions for every exploited flaw are listed on this page.
Create a Precursor Intelligence account and track ESXi. 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.