CVE & CISA-KEV Catalog

CVE-2021-24027

HIGHEPSS 89th pctl
7.5
CVSS v3
NVD

Description

A cache configuration issue prior to WhatsApp for Android v2.21.4.18 and WhatsApp Business for Android v2.21.4.18 may have allowed a third party with access to the device’s external storage to read cached TLS material.

How to fix

Remediation Available
whatsappNVD
Affected:< 2.21.4.18Fixed in:2.21.4.18CVE-2021-24027derived from NVD
whatsapp businessNVD
Affected:< 2.21.4.18Fixed in:2.21.4.18CVE-2021-24027derived from NVD

TridentStack Control can deploy fixes like this automatically across your Windows, macOS, and Linux fleet. See how it works

Remediation is compiled from vendor and distribution security advisories. Always confirm against the linked source for your exact version and platform.

CVSS v3 Vector

Exploitability

Attack VectorNetwork
Attack ComplexityLow
Privileges RequiredNone
User InteractionNone
ScopeUnchanged

Impact

ConfidentialityHigh
IntegrityNone
AvailabilityNone

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N

Exploit Intelligence

3.81%probability of exploitation in 30 days
89thpercentile

Elevated risk: more likely to be exploited than 89% of all known CVEs.

References

Vendor Advisory1

Related Vulnerabilities

Other CWE-524 vulnerabilities, ordered by exploit likelihood. View all

CVESeverityCVSSEPSSExploitedFix
CVE-2019-9494Medium5.93.9%-Fix
CVE-2019-9495Low3.73.4%-Fix
CVE-2019-14997Medium4.31.2%-Fix
CVE-2024-0874Medium5.30.8%-Fix
CVE-2024-45596High7.40.6%-Fix
CVE-2021-44854Medium5.30.6%-Fix

Common questions

How do I fix CVE-2021-24027?

Published advisories record a fix for 2 affected products. The "How to fix" section on this page lists the fixed version and source advisory for each one, so apply the entry matching what you actually run.

Is CVE-2021-24027 being actively exploited?

Not that we know of. CVE-2021-24027 is not in the CISA Known Exploited Vulnerabilities catalog. Its EPSS score of 3.8% is the estimated probability that it will be exploited in the next 30 days. That is higher than 89% of all scored CVEs.

How severe is CVE-2021-24027?

CVE-2021-24027 has a CVSS v3 base score of 7.5, rated high. CVSS rates the technical impact if the vulnerability is exploited, not how likely that is, so weigh it alongside the exploit-prediction score when you decide what to patch first.

What does CVE-2021-24027 affect?

Published advisories record a fix for whatsapp (NVD), whatsapp business (NVD). Only products with a sourced advisory are listed, so treat this as what we can cite rather than a complete inventory.

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CVE-2021-24027 severity badge

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This product uses NVD data but is not endorsed or certified by the NVD. EPSS scores courtesy of FIRST.org (https://www.first.org/epss). Source: CISA KEV Catalog. Data as of 2024-11-21.