CVE-2021-4198: messaging_ipc.dll NULL Pointer Dereference in multiple Bitdefender products (VA-10016)

Severity: medium (CVSS 6.1 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.5% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2022-03-07 · updated 2026-06-17
Weakness: CWE-476

Description

A NULL Pointer Dereference vulnerability in the messaging_ipc.dll component as used in Bitdefender Total Security, Internet Security, Antivirus Plus, Endpoint Security Tools, VPN Standalone allows an attacker to arbitrarily crash product processes and generate crashdump files. This issue affects: Bitdefender Total Security versions prior to 26.0.3.29. Bitdefender Internet Security versions prior to 26.0.3.29. Bitdefender Antivirus Plus versions prior to 26.0.3.29. Bitdefender Endpoint Security Tools versions prior to 7.2.2.92. Bitdefender VPN Standalone versions prior to 25.5.0.48.

Affected products

Bitdefender Antivirus Plus: before 26.0.3.29 — fixed in 26.0.3.29
Bitdefender Endpoint Security Tools: before 7.2.2.92 — fixed in 7.2.2.92
Bitdefender Internet Security: before 26.0.3.29 — fixed in 26.0.3.29
Bitdefender Total Security: before 26.0.3.29 — fixed in 26.0.3.29
Bitdefender VPN Standalone: before 25.5.0.48 — fixed in 25.5.0.48

How to fix

Upgrade to a fixed version: Bitdefender Antivirus Plus 26.0.3.29; Bitdefender Endpoint Security Tools 7.2.2.92; Bitdefender Internet Security 26.0.3.29; Bitdefender Total Security 26.0.3.29; Bitdefender VPN Standalone 25.5.0.48. Check the vendor advisory for mitigations.

References

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