CVE-2021-24026

highpriority · track · 39EPSS 0.014 · 72 %ileEUUS

grimoire priorityP2 · Scheduled

Exploitable?

—

no known exploitation

Likely / severe?

1.40% (72nd) EPSS

CVSS 10 · high

Is it mine?

7 products

Check your exposure

Who says so?

3 sources

cnnvd · enisa_euvd · nvd

EPSS · scored 2026-10-27

A missing bounds check within the audio decoding pipeline for WhatsApp calls in WhatsApp for Android prior to v2.21.3, WhatsApp Business for Android prior to v2.21.3, WhatsApp for iOS prior to v2.21.32, and WhatsApp Business for iOS prior to v2.21.32 could have allowed an out-of-bounds write.

cvss

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

10.0

010

base score 0–10 · higher = more severe · hover a vector to decode⚠ sources disagree · high–critical · 9–10

v2.010highAV:N/AC:L/Au:N/C:C/I:C/A:Cprimary · NVD / NIST USexploitability 10 · impact 10

v3.19.8criticalCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:Hprimary · NVD / NIST USexploitability 3.9 · impact 5.9

v3.19criticalCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H/E:Usecondary · CVSS-BT (t0sche)

weaknesses

The CWE weakness classes this flaw belongs to.

CWE-787USprimary

affected products (7)

Products and version ranges known to be affected.

Facebook WhatsApp Business for Androidunspecified → v2.21.3enisa_euvdEU
Facebook WhatsApp Business for iOSunspecified → v2.21.32enisa_euvdEU
Facebook WhatsApp for Androidunspecified → v2.21.3enisa_euvdEU
Facebook WhatsApp for iOSunspecified → v2.21.32enisa_euvdEU
whatsapp whatsapp< 2.21.3nvdUScpe:2.3:a:whatsapp:whatsapp:*:*:*:*:*:*:*:*
whatsapp whatsapp business< 2.21.3nvdUScpe:2.3:a:whatsapp:whatsapp_business:*:*:*:*:*:*:*:*
whatsapp whatsapp business< 2.21.32nvdUScpe:2.3:a:whatsapp:whatsapp_business:*:*:*:*:*:*:*:*

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 2021-04-06modified 2026-06-17

related (16,128)

Related entries.

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+16123 more

references (4)

External citations — patches, advisories, analysis.

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