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CVE-2023-38538

MEDIUM
5
CVSS Score
Published: October 4, 2023 at 07:10 PM UTC
Updated: June 17, 2026 at 06:10 AM UTC
2 products affected across 1 vendorWhatsAppWhatsapp Business

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Severity
MEDIUM5
Exploit prediction
EPSS 0.2%
SSVC
No known exploit

Description

A race condition in an event subsystem led to a heap use-after-free issue in established audio/video calls that could have resulted in app termination or unexpected control flow with very low probability.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

WhatsApp· Whatsapp
95%
v < 2.23.10.77v < 2.2320.2v < 2.2338.12
Affected range stops below 2.23.10.77, so it looks safe — our inference, not a vendor statement
Affected range stops below 2.2320.2, so it looks safe — our inference, not a vendor statement
Affected range stops below 2.2338.12, so it looks safe — our inference, not a vendor statement
Whatsapp Business· Whatsapp
60%
v < 2.23.10.77
Affected range stops below 2.23.10.77, so it looks safe — our inference, not a vendor statement

Remediation

No guide yet

No remediation guidance has been written for this CVE yet. What the record does show:

Patch and advisory references

References (1)

x_refsource_CONFIRMVendor Advisory
Source: [email protected]
https://www.whatsapp.com/security/advisories/2023/

SSVC — Action Prioritization

SSVCNo known exploitNot automatablePartial impact

SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.

CVSS

5MEDIUMfacebook
Vector?

Quick Info

StatusMODIFIED
CWE
CWE-362

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