CVE-2021-31727 describes an incorrect access control vulnerability in MalwareFox AntiMalware versions 2.74.0.150 and earlier. Specifically, the zam64.sys and zam32.sys drivers expose unrestricted disk read/write capabilities through specific IOCTLs. A low-privileged attacker can exploit this by registering with the driver and sending these IOCTLs to achieve privilege escalation, potentially by overwriting critical system areas like the boot sector or pagefile. This vulnerability carries a high CVSS score of 7.8 due to its local attack vector, low attack complexity, and high impact on confidentiality, integrity, and availability. There is currently no evidence of active exploitation, public exploit code, or significant community discussion surrounding this CVE.
| Vendor | Product | Version(s) | CPE |
|---|---|---|---|
2.74.0.150CPE matchmatch criteria | cpe:2.3:a:malwarefox:antimalware:2.74.0.150:*:*:*:*:*:*:* |
CVSS version used by this source: 3.1
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
The average CVE in this peer group has 0.0 Twitter, 0.1 Reddit, 0.2 Bluesky, 0.1 Mastodon, and 0.2 GitHub mentions.
No media coverage found for this CVE.
The average CVE in this peer group has 0.3 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.
Remediation records are not available for this CVE.