CVE-2021-39298
HIGHCVSS 8.8/10EPSS 0.43%
Last modified
CVE-2021-39298 is a high-severity vulnerability rated 8.8/10 on the CVSS scale. A potential vulnerability in AMD System Management Mode (SMM) interrupt handler may allow an attacker with high privileges to access the SMM resulting in arbitrary code execution which could be used by malicious actors to bypass security mechanisms provided in the UEFI firmware.. EPSS estimates a 0.43% chance of exploitation in the next 30 days.
Description
A potential vulnerability in AMD System Management Mode (SMM) interrupt handler may allow an attacker with high privileges to access the SMM resulting in arbitrary code execution which could be used by malicious actors to bypass security mechanisms provided in the UEFI firmware.
Metrics
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H
Affected Software
| Vendor | Product | Versions |
|---|---|---|
| Hp | Z1 Entry Tower G5 Workstation Firmware | < 02.12.00 |
| Hp | Z1 Entry Tower G6 Workstation Firmware | < 02.10.00 |
| Hp | Z1 G8 Tower Desktop Pc Firmware | < 02.07.00 |
| Hp | Z4 G4 Workstation \(Core-X\) Firmware | < 02.75 |
| Hp | Z4 G4 Workstation \(Xeon W\) Firmware | < 02.75 |
| Hp | Z6 G4 Workstation Firmware | < 02.75 |
| Hp | Z8 G4 Workstation Firmware | < 02.75 |
| Hp | Engage Flex Mini Retail System Firmware | < 02.10.00 |
| Hp | Mp9 G4 Retail System Firmware | < 02.18.00 |
| Hp | Elite Dragonfly Firmware | < 01.12.00 |
| Hp | Elite Dragonfly G2 Firmware | < 01.08.00 |
| Hp | Elite Dragonfly Max Firmware | < 01.08.00 |
| Hp | Elite X2 1013 G3 Firmware | < 01.19.00 |
| Hp | Elite X2 G4 Firmware | < 01.12.00 |
| Hp | Elite X2 G8 Tablet Firmware | < 01.08.00 |
| Hp | Elitebook 1050 G1 Firmware | < 01.19.00 |
| Hp | Elitebook 830 G5 Firmware | < 01.19.00 |
| Hp | Elitebook 830 G6 Firmware | < 01.12.00 |
| Hp | Elitebook 830 G7 Firmware | < 01.08.00 |
| Hp | Elitebook 830 G8 Firmware | < 01.08.00 |
| Hp | Elitebook 836 G5 Firmware | < 01.19.00 |
| Hp | Elitebook 836 G6 Firmware | < 01.12.00 |
| Hp | Elitebook 840 Aero G8 Firmware | < 01.08.00 |
| Hp | Elitebook 840 G5 Firmware | < 01.19.00 |
| Hp | Elitebook 840 G5 Healthcare Edition Firmware | < 01.19.00 |
| Hp | Elitebook 840 G6 Firmware | < 01.12.00 |
| Hp | Elitebook 840 G6 Healthcare Edition Firmware | < 01.12.00 |
| Hp | Elitebook 840 G7 Firmware | < 01.08.00 |
| Hp | Elitebook 840 G8 Firmware | < 01.08.00 |
| Hp | Elitebook 840r G4 Firmware | < 01.19.00 |
| Hp | Elitebook 846 G5 Firmware | < 01.19.00 |
| Hp | Elitebook 850 G5 Firmware | < 01.19.00 |
| Hp | Elitebook 850 G6 Firmware | < 01.12.00 |
| Hp | Elitebook 850 G7 Firmware | < 01.08.00 |
| Hp | Elitebook 850 G8 Firmware | < 01.08.00 |
| Hp | Elitebook X360 1030 G3 Firmware | < 01.19.00 |
| Hp | Elitebook X360 1030 G4 Firmware | < 01.12.00 |
| Hp | Elitebook X360 1030 G7 Firmware | < 01.08.00 |
| Hp | Elitebook X360 1030 G8 Firmware | < 01.08.00 |
| Hp | Elitebook X360 1040 G5 Firmware | < 01.19.00 |
| Hp | Elitebook X360 1040 G6 Firmware | < 01.12.00 |
| Hp | Elitebook X360 1040 G7 Firmware | < 01.08.00 |
| Hp | Elitebook X360 1040 G8 Firmware | < 01.08.00 |
| Hp | Elitebook X360 830 G5 Firmware | < 01.19.00 |
| Hp | Elitebook X360 830 G6 Firmware | < 01.12.00 |
| Hp | Elitebook X360 830 G7 Firmware | < 01.08.00 |
| Hp | Elitebook X360 830 G8 Firmware | < 01.08.00 |
| Hp | Probook 430 G5 Firmware | < 01.19.00 |
| Hp | Probook 430 G6 Firmware | < 01.19.00 |
| Hp | Probook 430 G7 Firmware | < 01.12.00 |
Showing 50 of 187 affected configurations. See NVD for the full list.
References
Timeline
- Published
- Last Modified
- Status
- Modified
Frequently Asked Questions
What is CVE-2021-39298?
A potential vulnerability in AMD System Management Mode (SMM) interrupt handler may allow an attacker with high privileges to access the SMM resulting in arbitrary code execution which could be used by malicious actors to bypass security mechanisms provided in the UEFI firmware.
How severe is CVE-2021-39298?
CVE-2021-39298 has a CVSS score of 8.8/10 (HIGH severity). The EPSS model estimates a 0.43% probability of exploitation in the next 30 days.
How do I fix CVE-2021-39298?
Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.
How Strix Helps
- How Strix found a critical auth bypass in etcdStrix autonomously discovered a critical authentication bypass in etcd, later designated CVE-2026-33413.
- Autonomous PentestingAI agents that find and validate exploitable vulnerabilities like this one across your applications.
- PR ReviewsPentest every pull request so vulnerable code is caught before it ships to production.
- AI Penetration TestingHow AI-driven penetration testing continuously covers your attack surface.
Related CVEs from 2021
- CVE-2021-39290Certain NetModule devices allow Limited Session Fixation via…9.8
- CVE-2021-39291Certain NetModule devices allow credentials via GET paramete…8.8
- CVE-2021-39293In archive/zip in Go before 1.16.8 and 1.17.x before 1.17.1,…7.5
- CVE-2021-39295In OpenBMC 2.9, crafted IPMI messages allow an attacker to c…7.5
- CVE-2021-39296In OpenBMC 2.9, crafted IPMI messages allow an attacker to b…10
- CVE-2021-39297Potential vulnerabilities have been identified in UEFI firmw…8.8
- CVE-2021-39299Potential vulnerabilities have been identified in UEFI firmw…8.8
- CVE-2021-3930An off-by-one error was found in the SCSI device emulation i…6.5
- CVE-2021-39300Potential vulnerabilities have been identified in UEFI firmw…8.8
- CVE-2021-39301Potential vulnerabilities have been identified in UEFI firmw…8.8
- CVE-2021-39302MISP 2.4.148, in certain configurations, allows SQL injectio…9.8
- CVE-2021-39303The server in Jamf Pro before 10.32.0 has an SSRF vulnerabil…9.8
Are you affected by CVE-2021-39298?
Run a free Strix scan to check your systems for this vulnerability.
Scan your code nowSource: NVD / NIST