7.8

CVE-2021-3809: hp inc. hp pc bios Improper Privilege Management

CVSS: 7.8v3.1HighModified
Published 30-01-2023Last modified 27-03-2025
Open JSON

Vulnerability summary

CVE-2021-3809 is a high (CVSS 7.8) Improper Privilege Management vulnerability in hp inc. hp pc bios. EPSS estimates a 0.24% chance of exploitation in the next 30 days, higher than 14.7% of scored vulnerabilities.

Overall risk
31/100
0100
Medium · default modelHow is this calculated?
CVSS score
7.8/10
010
High · v3.1 (CVE.org)
EPSS score
0.24%
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. 30-01-2023
    PublishedVulnerability first disclosed.
  2. 27-03-2025
    Last modifiedVulnerability information updated.

Description

Potential security vulnerabilities have been identified in the BIOS (UEFI Firmware) for certain HP PC products, which might allow arbitrary code execution. HP is releasing firmware updates to mitigate these potential vulnerabilities.

CVSS metrics

2 scores · 2 sources · 1 version

EPSS trend

Probability

0.24%

Chance of exploitation in the next 30 days

Percentile

15%

Versus all other CVEs

30-day change

0.00 pp

From 0.24% on 19-09-2026

19-09-202619-10-2026
EPSS score
0.24%

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

Hp181 products
Hp inc.1 product
  • hp pc biosSee HP Security Bulletin reference for affected versions.

2 vendors · 182 products

References

1 links