CVE-2021-4198: bitdefender antivirus_plus NULL Pointer Dereference
Vulnerability summary
CVE-2021-4198 is a medium (CVSS 6.1) NULL Pointer Dereference vulnerability in bitdefender antivirus_plus. EPSS estimates a 0.55% chance of exploitation in the next 30 days, higher than 44.5% of scored vulnerabilities.
Timeline
- 07-03-2022PublishedVulnerability first disclosed.
- 17-09-2024Last modifiedVulnerability information updated.
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.
CVSS metrics
3 scores · 2 sources · 2 versions- NVDNIST6.1MediumCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:H
EPSS trend
Probability
0.55%
Chance of exploitation in the next 30 days
Percentile
45%
Versus all other CVEs
30-day change
-0.02 pp
From 0.57% on 19-09-2026
Known exploited
Compare KEV catalogsNot in any of the 3 tracked catalogs.
Public exploits
0 foundNo public exploits indexed.
Weaknesses
CWE · root causeAffected systems
Bitdefender5 products
- antivirus_plus≥ unspecified, < 26.0.3.29 | < 26.0.3.29
- endpoint_security_tools≥ unspecified, < 7.2.2.92 | < 7.2.2.92
- internet_security≥ unspecified, < 26.0.3.29 | < 26.0.3.29
- total_security≥ unspecified, < 26.0.3.29 | < 26.0.3.29
- vpn_standalone≥ unspecified, < 25.5.0.48 | < 25.5.0.48
1 vendor · 5 products