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EUVD-2021-21081

🗓️ 07 Oct 2025 00:30:54Reported by EUVDType 
euvd
 euvd
🔗 euvd.enisa.europa.eu👁 23 Views

Buffer overflow found in various Zoom Client versions for multiple platforms, risking service crashes.

Related
Affected
Refs
ReporterTitlePublishedViews
Family
attackerkb
attackerkb
CVE-2021-34423
24 Nov 202113:00
–attackerkb
githubexploit
GithubExploit
Exploit for Server-Side Request Forgery in Microsoft
10 Aug 202115:01
–githubexploit
githubexploit
GithubExploit
Exploit for Server-Side Request Forgery in Microsoft
29 Jun 202212:37
–githubexploit
bdu_fstec
BDU FSTEC
Zoom Buffer Overflow
13 Dec 202100:00
–bdu_fstec
circl
Circl
CVE-2021-34423
2 Oct 202108:47
–circl
cnnvd
CNNVD
ZOOM Client security vulnerabilities
24 Nov 202100:00
–cnnvd
cve
CVE
CVE-2021-34423
24 Nov 202116:53
–cve
cvelist
Cvelist
CVE-2021-34423 Buffer overflow in Zoom client and other products
24 Nov 202116:53
–cvelist
googleprojectzero
GoogleProjectZero
Zooming in on Zero-click Exploits
18 Jan 202200:00
–googleprojectzero
hivepro
hivepro
Have you updated your Zoom meeting?
30 Nov 202110:11
–hivepro
Rows per page
[
  {
    "enisaIdVendor": [
      {
        "id": "cd8860ad-0fc9-3c61-927c-7e726b20dfa2",
        "vendor": {
          "name": "Zoom Video Communications Inc"
        }
      }
    ],
    "enisaIdProduct": [
      {
        "id": "00828d37-4075-3f40-aeb3-14f0466d8c9c",
        "product": {
          "name": "Zoom Client for Meetings for Chrome OS"
        },
        "product_version": "unspecified <5.0.1"
      },
      {
        "id": "0bf99c90-c325-3261-8023-283ab2f60b1b",
        "product": {
          "name": "Zoom Meeting SDK for macOS"
        },
        "product_version": "unspecified <5.7.6.1340"
      },
      {
        "id": "12fae390-6e13-3c0e-9082-2f8ab6c6c2a6",
        "product": {
          "name": "Zoom VDI Azure Virtual Desktop Plugins (for Windows x86 or x64, IGEL x64, Ubuntu x64, HP ThinPro OS x64)"
        },
        "product_version": "unspecified <5.8.4.21112"
      },
      {
        "id": "18ad1641-0fc1-3172-a661-4928ea70f39c",
        "product": {
          "name": "Zoom Video SDK (for Android, iOS, macOS, and Windows)"
        },
        "product_version": "unspecified <1.1.2"
      },
      {
        "id": "24285702-4f89-3e8d-9b09-c307dd2233fa",
        "product": {
          "name": "Zoom Meeting SDK for iOS"
        },
        "product_version": "unspecified <5.7.6.1082"
      },
      {
        "id": "381c122d-a185-37c9-8647-c57435d8311f",
        "product": {
          "name": "Zoom VDI Windows Meeting Client"
        },
        "product_version": "unspecified <5.8.4"
      },
      {
        "id": "436c6a76-853b-3597-842a-400d9a19143d",
        "product": {
          "name": "Zoom Hybrid MMR"
        },
        "product_version": "unspecified <4.6.20211116.131_x86-64"
      },
      {
        "id": "467509f7-350f-308b-bfb2-67a7136c618c",
        "product": {
          "name": "Zoom Client for Meetings (for Android, iOS, Linux, macOS, and Windows)"
        },
        "product_version": "unspecified <5.8.4"
      },
      {
        "id": "4c6fee94-9081-3d03-b8ec-8db0f914892a",
        "product": {
          "name": "Zoom Meeting SDK for Android"
        },
        "product_version": "unspecified <5.7.6.1922"
      },
      {
        "id": "58fcbb2a-c6cb-3265-94bb-ea681128a0d3",
        "product": {
          "name": "Zoom On-Premise Recording Connector"
        },
        "product_version": "unspecified <5.1.0.65.20211116"
      },
      {
        "id": "5e42fb79-fe51-3407-83af-14f5b2200b16",
        "product": {
          "name": "Zoom Meeting SDK for Windows"
        },
        "product_version": "unspecified <5.7.6.1081"
      },
      {
        "id": "66e4eee1-4eb4-3145-9c41-877bcbeac703",
        "product": {
          "name": "Zoom Rooms for Conference Room (for Android, AndroidBali, macOS, and Windows)"
        },
        "product_version": "unspecified <5.8.3"
      },
      {
        "id": "749a8444-bc96-38c4-b001-09bdb9db3ee4",
        "product": {
          "name": "Zoom On-Premise Virtual Room Connector Load Balancer"
        },
        "product_version": "unspecified <2.5.5692.20211117"
      },
      {
        "id": "7a922e82-9401-359a-b96c-1e3079a7ae96",
        "product": {
          "name": "Zoom Client for Meetings for intune (for Android and iOS)"
        },
        "product_version": "unspecified <5.8.4"
      },
      {
        "id": "7f0bda9e-6520-348e-8e67-4d74bcccf5af",
        "product": {
          "name": "Zoom On-Premise Meeting Connector MMR"
        },
        "product_version": "unspecified <4.8.12.20211115"
      },
      {
        "id": "8b4a2b04-d37c-3340-809e-eb6652a6588a",
        "product": {
          "name": "Zoom On-Premise Meeting Connector Controller"
        },
        "product_version": "unspecified <4.8.12.20211115"
      },
      {
        "id": "8c8019f1-123a-3202-beea-c9d2c0a161c9",
        "product": {
          "name": "Zoom VDI VMware Plugins (for Windows x86 or x64, Mac Universal Installer & Uninstaller, IGEL x64, eLux RP6 x64, HP ThinPro OS x64, Ubuntu x64, CentOS x 64, Dell ThinOS)"
        },
        "product_version": "unspecified <5.8.4.21112"
      },
      {
        "id": "a28029fb-428e-3e57-9692-ad9d70de4dbc",
        "product": {
          "name": "Zoom On-Premise Virtual Room Connector"
        },
        "product_version": "unspecified <4.4.7266.20211117"
      },
      {
        "id": "a73d9e1c-3bea-3129-b950-8cc4afc646c5",
        "product": {
          "name": "Zoom VDI Citrix Plugins (for Windows x86 or x64, Mac Universal Installer & Uninstaller, IGEL x64, eLux RP6 x64, HP ThinPro OS x64, Ubuntu x64, CentOS x 64, Dell ThinOS)"
        },
        "product_version": "unspecified <5.8.4.21112"
      },
      {
        "id": "d75522ab-179a-355b-bd6b-c16be6e9ed39",
        "product": {
          "name": "Zoom Hybrid Zproxy"
        },
        "product_version": "unspecified <1.0.1058.20211116"
      },
      {
        "id": "d8399875-32da-34df-9836-40d837cf0baa",
        "product": {
          "name": "Controllers for Zoom Rooms (for Android, iOS, and Windows)"
        },
        "product_version": "unspecified <5.8.3"
      },
      {
        "id": "e3047e06-17fa-3d91-914a-432c45fdb9e0",
        "product": {
          "name": "Zoom Client for Meetings for Blackberry (for Android and iOS)"
        },
        "product_version": "unspecified <5.8.1"
      }
    ]
  }
]

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07 Oct 2025 00:30Current
7.7High risk
Vulners AI Score7.7
CVSS 37.3
CVSS 27.5
CVSS 3.19.8
EPSS0.03268
23