Is CVE-2021-24027 in the CISA KEV catalog?

No. CVE-2021-24027 is not currently on the CISA Known Exploited Vulnerabilities list.

What is the CVSS severity of CVE-2021-24027?

CVE-2021-24027 has a CVSS v3 base score of 7.5 (HIGH).

What is the EPSS score for CVE-2021-24027?

CVE-2021-24027 has an EPSS score of 3.81% (89th percentile), estimating the probability of exploitation in the next 30 days.

How do I fix CVE-2021-24027?

Upgrade whatsapp to 2.21.4.18 or later. Fixes are available for 2 affected products.

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.

CWE-524

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

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

whatsapp.com

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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.