9.8

CVE-2020-5955: insyde insydeh2o_uefi_bios

CVSS: 9.8v3.1CriticalModified
Published 03-11-2021Last modified 04-08-2024
Open JSON

Vulnerability summary

CVE-2020-5955 is a critical (CVSS 9.8) vulnerability in insyde insydeh2o_uefi_bios. EPSS estimates a 1.41% chance of exploitation in the next 30 days, higher than 72.3% of scored vulnerabilities.

Overall risk
70/100
0100
High · default modelHow is this calculated?
CVSS score
9.8/10
010
Critical · v3.1 (NVD)
EPSS score
1.41%
0%100%
Low · 0.00 pp in 30 days
KEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits0No public exploits recorded

Timeline

  1. 03-11-2021
    PublishedVulnerability first disclosed.
  2. 04-08-2024
    Last modifiedVulnerability information updated.

Description

An issue was discovered in Int15MicrocodeSmm in Insyde InsydeH2O before 2021-10-14 on Intel client chipsets. A caller may be able to escalate privileges.

CVSS metrics

2 scores · 1 source · 2 versions

EPSS trend

Probability

1.41%

Chance of exploitation in the next 30 days

Percentile

72%

Versus all other CVEs

30-day change

0.00 pp

From 1.41% on 20-09-2026

20-09-202620-10-2026
EPSS score
1.41%

Known exploited

Compare KEV catalogs

Not in any of the 3 tracked catalogs.

Public exploits

0 found

No public exploits indexed.

Weaknesses

CWE · root cause

No weakness data has been published for this record.

Affected systems

Insyde1 product
  • insydeh2o_uefi_bios< 05.32.30.0001 | < 05.41.35.0001 | < 05.42.11.0026 | < 05.04.21.0068 | < 05.42.09.0003 | < 05.21.51.0040 | < 05.34.09.0030 | < 05.32.47.0001 | < 05.23.45.0023 | < 05.21.43.0001 | < 05.23.04.0045 | < 05.11.26.0015 | < 05.12.09.0075 | < 05.10.48.0001 | < 05.05.39.0001 | < 05.04.15.0001 | < 05.23.27.0001

1 vendor · 1 product

References

3 links