7.1
HIGH
CVE-2021-26332
AMD SEV-ES Firmware Unverified Memory Access Vulnerability
Description

Failure to verify SEV-ES TMR is not in MMIO space, SEV-ES FW could result in a potential loss of integrity or availability.

INFO

Published Date :

May 10, 2022, 7:15 p.m.

Last Modified :

Nov. 21, 2024, 5:56 a.m.

Remotely Exploitable :

No

Impact Score :

5.2

Exploitability Score :

1.8
Affected Products

The following products are affected by CVE-2021-26332 vulnerability. Even if cvefeed.io is aware of the exact versions of the products that are affected, the information is not represented in the table below.

ID Vendor Product Action
1 Amd epyc_72f3_firmware
2 Amd epyc_7313_firmware
3 Amd epyc_7313p_firmware
4 Amd epyc_7343_firmware
5 Amd epyc_7373x_firmware
6 Amd epyc_73f3_firmware
7 Amd epyc_7413_firmware
8 Amd epyc_7443_firmware
9 Amd epyc_7443p_firmware
10 Amd epyc_7453_firmware
11 Amd epyc_74f3_firmware
12 Amd epyc_7513_firmware
13 Amd epyc_7543_firmware
14 Amd epyc_7543p_firmware
15 Amd epyc_7573x_firmware
16 Amd epyc_75f3_firmware
17 Amd epyc_7643_firmware
18 Amd epyc_7663_firmware
19 Amd epyc_7713_firmware
20 Amd epyc_7713p_firmware
21 Amd epyc_7763_firmware
22 Amd epyc_7773x_firmware
23 Amd epyc_7473x_firmware
24 Amd epyc_72f3
25 Amd epyc_7313
26 Amd epyc_7313p
27 Amd epyc_7343
28 Amd epyc_73f3
29 Amd epyc_7413
30 Amd epyc_7443
31 Amd epyc_7443p
32 Amd epyc_7453
33 Amd epyc_74f3
34 Amd epyc_7513
35 Amd epyc_7543
36 Amd epyc_7543p
37 Amd epyc_75f3
38 Amd epyc_7643
39 Amd epyc_7663
40 Amd epyc_7713
41 Amd epyc_7713p
42 Amd epyc_7763
43 Amd epyc_7773x
44 Amd epyc_7573x
45 Amd epyc_7473x
46 Amd epyc_7373x
References to Advisories, Solutions, and Tools

Here, you will find a curated list of external links that provide in-depth information, practical solutions, and valuable tools related to CVE-2021-26332.

URL Resource
https://www.amd.com/en/corporate/product-security/bulletin/amd-sb-1021 Vendor Advisory
https://www.amd.com/en/corporate/product-security/bulletin/amd-sb-1021 Vendor Advisory

We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).

Results are limited to the first 15 repositories due to potential performance issues.

The following list is the news that have been mention CVE-2021-26332 vulnerability anywhere in the article.

The following table lists the changes that have been made to the CVE-2021-26332 vulnerability over time.

Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.

  • CVE Modified by af854a3a-2127-422b-91ae-364da2661108

    Nov. 21, 2024

    Action Type Old Value New Value
    Added Reference https://www.amd.com/en/corporate/product-security/bulletin/amd-sb-1021
  • CVE Modified by [email protected]

    May. 14, 2024

    Action Type Old Value New Value
  • Initial Analysis by [email protected]

    May. 16, 2022

    Action Type Old Value New Value
    Added CVSS V2 NIST (AV:L/AC:L/Au:N/C:N/I:C/A:C)
    Added CVSS V3.1 NIST AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:H
    Changed Reference Type https://www.amd.com/en/corporate/product-security/bulletin/amd-sb-1021 No Types Assigned https://www.amd.com/en/corporate/product-security/bulletin/amd-sb-1021 Vendor Advisory
    Added CWE NIST NVD-CWE-noinfo
    Added CPE Configuration AND OR *cpe:2.3:o:amd:epyc_7763_firmware:*:*:*:*:*:*:*:* versions up to (excluding) milanpi-sp3_1.0.0.4 OR cpe:2.3:h:amd:epyc_7763:-:*:*:*:*:*:*:*
    Added CPE Configuration AND OR *cpe:2.3:o:amd:epyc_7713p_firmware:*:*:*:*:*:*:*:* versions up to (excluding) milanpi-sp3_1.0.0.4 OR cpe:2.3:h:amd:epyc_7713p:-:*:*:*:*:*:*:*
    Added CPE Configuration AND OR *cpe:2.3:o:amd:epyc_7713_firmware:*:*:*:*:*:*:*:* versions up to (excluding) milanpi-sp3_1.0.0.4 OR cpe:2.3:h:amd:epyc_7713:-:*:*:*:*:*:*:*
    Added CPE Configuration AND OR *cpe:2.3:o:amd:epyc_7663_firmware:*:*:*:*:*:*:*:* versions up to (excluding) milanpi-sp3_1.0.0.4 OR cpe:2.3:h:amd:epyc_7663:-:*:*:*:*:*:*:*
    Added CPE Configuration AND OR *cpe:2.3:o:amd:epyc_7643_firmware:*:*:*:*:*:*:*:* versions up to (excluding) milanpi-sp3_1.0.0.4 OR cpe:2.3:h:amd:epyc_7643:-:*:*:*:*:*:*:*
    Added CPE Configuration AND OR *cpe:2.3:o:amd:epyc_75f3_firmware:*:*:*:*:*:*:*:* versions up to (excluding) milanpi-sp3_1.0.0.4 OR cpe:2.3:h:amd:epyc_75f3:-:*:*:*:*:*:*:*
    Added CPE Configuration AND OR *cpe:2.3:o:amd:epyc_7543p_firmware:*:*:*:*:*:*:*:* versions up to (excluding) milanpi-sp3_1.0.0.4 OR cpe:2.3:h:amd:epyc_7543p:-:*:*:*:*:*:*:*
    Added CPE Configuration AND OR *cpe:2.3:o:amd:epyc_7543_firmware:*:*:*:*:*:*:*:* versions up to (excluding) milanpi-sp3_1.0.0.4 OR cpe:2.3:h:amd:epyc_7543:-:*:*:*:*:*:*:*
    Added CPE Configuration AND OR *cpe:2.3:o:amd:epyc_7513_firmware:*:*:*:*:*:*:*:* versions up to (excluding) milanpi-sp3_1.0.0.4 OR cpe:2.3:h:amd:epyc_7513:-:*:*:*:*:*:*:*
    Added CPE Configuration AND OR *cpe:2.3:o:amd:epyc_7453_firmware:*:*:*:*:*:*:*:* versions up to (excluding) milanpi-sp3_1.0.0.4 OR cpe:2.3:h:amd:epyc_7453:-:*:*:*:*:*:*:*
    Added CPE Configuration AND OR *cpe:2.3:o:amd:epyc_74f3_firmware:*:*:*:*:*:*:*:* versions up to (excluding) milanpi-sp3_1.0.0.4 OR cpe:2.3:h:amd:epyc_74f3:-:*:*:*:*:*:*:*
    Added CPE Configuration AND OR *cpe:2.3:o:amd:epyc_7443p_firmware:*:*:*:*:*:*:*:* versions up to (excluding) milanpi-sp3_1.0.0.4 OR cpe:2.3:h:amd:epyc_7443p:-:*:*:*:*:*:*:*
    Added CPE Configuration AND OR *cpe:2.3:o:amd:epyc_7443_firmware:*:*:*:*:*:*:*:* versions up to (excluding) milanpi-sp3_1.0.0.4 OR cpe:2.3:h:amd:epyc_7443:-:*:*:*:*:*:*:*
    Added CPE Configuration AND OR *cpe:2.3:o:amd:epyc_7413_firmware:*:*:*:*:*:*:*:* versions up to (excluding) milanpi-sp3_1.0.0.4 OR cpe:2.3:h:amd:epyc_7413:-:*:*:*:*:*:*:*
    Added CPE Configuration AND OR *cpe:2.3:o:amd:epyc_73f3_firmware:*:*:*:*:*:*:*:* versions up to (excluding) milanpi-sp3_1.0.0.4 OR cpe:2.3:h:amd:epyc_73f3:-:*:*:*:*:*:*:*
    Added CPE Configuration AND OR *cpe:2.3:o:amd:epyc_7343_firmware:*:*:*:*:*:*:*:* versions up to (excluding) milanpi-sp3_1.0.0.4 OR cpe:2.3:h:amd:epyc_7343:-:*:*:*:*:*:*:*
    Added CPE Configuration AND OR *cpe:2.3:o:amd:epyc_7313p_firmware:*:*:*:*:*:*:*:* versions up to (excluding) milanpi-sp3_1.0.0.4 OR cpe:2.3:h:amd:epyc_7313p:-:*:*:*:*:*:*:*
    Added CPE Configuration AND OR *cpe:2.3:o:amd:epyc_7313_firmware:*:*:*:*:*:*:*:* versions up to (excluding) milanpi-sp3_1.0.0.4 OR cpe:2.3:h:amd:epyc_7313:-:*:*:*:*:*:*:*
    Added CPE Configuration AND OR *cpe:2.3:o:amd:epyc_72f3_firmware:*:*:*:*:*:*:*:* versions up to (excluding) milanpi-sp3_1.0.0.4 OR cpe:2.3:h:amd:epyc_72f3:-:*:*:*:*:*:*:*
    Added CPE Configuration AND OR *cpe:2.3:o:amd:epyc_7773x_firmware:*:*:*:*:*:*:*:* versions up to (excluding) milanpi-sp3_1.0.0.4 OR cpe:2.3:h:amd:epyc_7773x:-:*:*:*:*:*:*:*
    Added CPE Configuration AND OR *cpe:2.3:o:amd:epyc_7473x_firmware:*:*:*:*:*:*:*:* versions up to (excluding) milanpi-sp3_1.0.0.4 OR cpe:2.3:h:amd:epyc_7473x:-:*:*:*:*:*:*:*
    Added CPE Configuration AND OR *cpe:2.3:o:amd:epyc_7573x_firmware:*:*:*:*:*:*:*:* versions up to (excluding) milanpi-sp3_1.0.0.4 OR cpe:2.3:h:amd:epyc_7573x:-:*:*:*:*:*:*:*
    Added CPE Configuration AND OR *cpe:2.3:o:amd:epyc_7373x_firmware:*:*:*:*:*:*:*:* versions up to (excluding) milanpi-sp3_1.0.0.4 OR cpe:2.3:h:amd:epyc_7373x:-:*:*:*:*:*:*:*
EPSS is a daily estimate of the probability of exploitation activity being observed over the next 30 days. Following chart shows the EPSS score history of the vulnerability.
CWE - Common Weakness Enumeration

While CVE identifies specific instances of vulnerabilities, CWE categorizes the common flaws or weaknesses that can lead to vulnerabilities. CVE-2021-26332 is associated with the following CWEs:

Common Attack Pattern Enumeration and Classification (CAPEC)

Common Attack Pattern Enumeration and Classification (CAPEC) stores attack patterns, which are descriptions of the common attributes and approaches employed by adversaries to exploit the CVE-2021-26332 weaknesses.

Exploit Prediction

EPSS is a daily estimate of the probability of exploitation activity being observed over the next 30 days.

0.04 }} 0.00%

score

0.10321

percentile

CVSS31 - Vulnerability Scoring System
Attack Vector
Attack Complexity
Privileges Required
User Interaction
Scope
Confidentiality
Integrity
Availability