CVE-2020-1909

highpriority · track · 40EPSS 0.023 · 83 %ileEUUS

grimoire priorityP2 · Scheduled

Exploitable?

—

no known exploitation

Likely / severe?

2.28% (83rd) EPSS

CVSS 7.5 · high

Is it mine?

8 products

Check your exposure

Who says so?

3 sources

cnnvd · enisa_euvd · nvd

EPSS · scored 2026-10-27

A use-after-free in a logging library in WhatsApp for iOS prior to v2.20.111 and WhatsApp Business for iOS prior to v2.20.111 could have resulted in memory corruption, crashes and potentially code execution. This could have happened only if several events occurred together in sequence, including receiving an animated sticker while placing a WhatsApp video call on hold.

cvss

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

9.8

010

base score 0–10 · higher = more severe · hover a vector to decode⚠ sources disagree · high–critical · 7.5–9.8

v2.07.5highAV:N/AC:L/Au:N/C:P/I:P/A:Pprimary · NVD / NIST USexploitability 10 · impact 6.4

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-416USprimary

affected products (8)

Products and version ranges known to be affected.

Facebook WhatsApp Business for iOS≤ 2.20.111enisa_euvdEU
Facebook WhatsApp Business for iOS2.20.81 → unspecifiedenisa_euvdEU
Facebook WhatsApp Business for iOSunspecified → 2.20.111enisa_euvdEU
Facebook WhatsApp for iOS≤ 2.20.111enisa_euvdEU
Facebook WhatsApp for iOS2.20.81 → unspecifiedenisa_euvdEU
Facebook WhatsApp for iOSunspecified → 2.20.111enisa_euvdEU
whatsapp whatsapp< 2.20.111nvdUScpe:2.3:a:whatsapp:whatsapp:*:*:*:*:*:*:*:*
whatsapp whatsapp business< 2.20.111nvdUScpe: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 2020-11-03modified 2026-06-17

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+12230 more

references (4)

External citations — patches, advisories, analysis.

scry

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