Buffer overflow in IBM Power Systems

Published: 2023-06-14
Risk Medium
Patch available YES
Number of vulnerabilities 1
CVE-ID CVE-2021-3746
Exploitation vector Network
Public exploit N/A
Vulnerable software
PowerVM Hypervisor
Client/Desktop applications / Virtualization software

Vendor IBM Corporation

Security Bulletin

This security bulletin contains one medium risk vulnerability.

1) Buffer overflow

EUVDB-ID: #VU77293

Risk: Medium

CVSSv3.1: 5.7 [CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H/E:U/RL:O/RC:C]

CVE-ID: CVE-2021-3746

CWE-ID: CWE-119 - Memory corruption

Exploit availability: No


The vulnerability allows a remote attacker to perform a denial of service attack.

The vulnerability exists due to a boundary error. A remote attacker can trick the victim into opening a specially-crafted TPM2 command packets, trigger memory corruption and perform a denial of service attack.


Install update from vendor's website.

Vulnerable software versions

PowerVM Hypervisor: before FW1010.40

External links


Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.

How the attacker can exploit this vulnerability?

The attacker would have to trick the victim to open a a specially crafted file.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.