7.8

CVE-2023-39283: insyde insydeh2o Out-of-bounds Write

CVSS: 7.8v3.1HighModified
Published 02-11-2023Last modified 05-09-2024
Open JSON

Vulnerability summary

CVE-2023-39283 is a high (CVSS 7.8) Out-of-bounds Write vulnerability in insyde insydeh2o. EPSS estimates a 0.19% chance of exploitation in the next 30 days, higher than 8.5% of scored vulnerabilities.

Overall risk
31/100
0100
Medium · default modelHow is this calculated?
CVSS score
7.8/10
010
High · v3.1 (NVD)
EPSS score
0.19%
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. 02-11-2023
    PublishedVulnerability first disclosed.
  2. 05-09-2024
    Last modifiedVulnerability information updated.

Description

An SMM memory corruption vulnerability in the SMM driver (SMRAM write) in CsmInt10HookSmm in Insyde InsydeH2O with kernel 5.0 through 5.5 allows attackers to send arbitrary data to SMM which could lead to privilege escalation.

CVSS metrics

1 score · 1 source · 1 version

EPSS trend

Probability

0.19%

Chance of exploitation in the next 30 days

Percentile

9%

Versus all other CVEs

30-day change

0.00 pp

From 0.19% on 21-09-2026

21-09-202621-10-2026
EPSS score
0.19%

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

Affected systems

Insyde1 product
  • insydeh2o≥ 5.0, ≤ 5.5 | 5.5.05.53.22 | 5.6 | 5.6.05.60.22

1 vendor · 1 product

References

2 links