CVE-2021-34425

mediumpriority · track · 24EPSS 0.008 · 56 %ileEUUS

grimoire priorityP3 · Track

Exploitable?

—

no known exploitation

Likely / severe?

0.79% (56th) EPSS

CVSS 4 · medium

Is it mine?

6 products

Check your exposure

Who says so?

3 sources

cnnvd · enisa_euvd · nvd

EPSS · scored 2026-10-27

The Zoom Client for Meetings before version 5.7.3 (for Android, iOS, Linux, macOS, and Windows) contain a server side request forgery vulnerability in the chat\'s "link preview" functionality. In versions prior to 5.7.3, if a user were to enable the chat\'s "link preview" feature, a malicious actor could trick the user into potentially sending arbitrary HTTP GET requests to URLs that the actor cannot reach directly.

cvss

Technical severity, 0–10. One row per scoring source.

6.1

010

base score 0–10 · higher = more severe · hover a vector to decode

v2.04mediumAV:N/AC:H/Au:N/C:P/I:P/A:Nprimary · NVD / NIST USexploitability 4.9 · impact 4.9

v3.16.1mediumCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:Nprimary · NVD / NIST USexploitability 2.8 · impact 2.7

v3.14.7mediumCVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:C/C:L/I:L/A:Nsecondary · ENISA EU

v3.14.7mediumCVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:C/C:L/I:L/A:Nsecondary · security@zoom.usexploitability 1.6 · impact 2.7

v3.15.6mediumCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N/E:Usecondary · CVSS-BT (t0sche)

weaknesses

The CWE weakness classes this flaw belongs to.

CWE-918USprimary

affected products (6)

Products and version ranges known to be affected.

Zoom Video Communications Inc Zoom Client for Meetings for Androidunspecified → 5.7.3enisa_euvdEU
Zoom Video Communications Inc Zoom Client for Meetings for Linuxunspecified → 5.7.3enisa_euvdEU
Zoom Video Communications Inc Zoom Client for Meetings for Windowsunspecified → 5.7.3enisa_euvdEU
Zoom Video Communications Inc Zoom Client for Meetings for iOSunspecified → 5.7.3enisa_euvdEU
Zoom Video Communications Inc Zoom Client for Meetings for macOSunspecified → 5.7.3enisa_euvdEU
zoom meetings< 5.7.3nvdUScpe:2.3:a:zoom:meetings:*:*:*:*:*:*:*:*

also known as (3)

Other names and identifiers for this entity.

sources

Which sources assert this record, and when.

cnnvd enisa_euvd nvd NVD CVE.org MITRE

published 2021-12-14modified 2026-06-17

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+4178 more

references (4)

External citations — patches, advisories, analysis.

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