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CVE-2022-43778

19
FAUCET Score

CVE-2022-43778 is a Time-of-Check to Time-of-Use (TOCTOU) vulnerability affecting the HP BIOS in certain HP PC products. This high-severity vulnerability (CVSS 7.8) requires local access and high attack complexity, but could lead to arbitrary code execution, denial of service, or information disclosure. There is no evidence of active exploitation, public exploit code, or Metasploit/Nuclei modules available. Despite limited community discussion, it has received some media coverage.

Impacted Technologies

VendorProductVersion(s)CPE
<= 1.24CPE matchmatch criteria
cpe:2.3:o:hp:zcentral_4r_workstation_firmware:*:*:*:*:*:*:*:*
<= 1.33CPE matchmatch criteria
cpe:2.3:o:hp:z1_all-in-one_g3_workstation_firmware:*:*:*:*:*:*:*:*
<= 1.42CPE matchmatch criteria
cpe:2.3:o:hp:elitebook_725_g4_firmware:*:*:*:*:*:*:*:*
<= 1.42CPE matchmatch criteria
cpe:2.3:o:hp:elitebook_745_g4_firmware:*:*:*:*:*:*:*:*
<= 1.42CPE matchmatch criteria
cpe:2.3:o:hp:elitebook_755_g4_firmware:*:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.1

7.8HIGH

CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:C/C:H/I:H/A:H

Attack Vector
LOCAL
Attack Complexity
HIGH
Privileges Required
LOW
User Interaction
NONE
Scope
CHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
Exploitability Score
1.1
Impact Score
6.0
CvssVersion
3.1

Exploit Intelligence

EPSS Score
0.20%
Probability of exploitation in next 30 days
EPSS Percentile
9.9%
Percentile rank of EPSS score among Peer Group
As of 2026-07-26
Model: v2026.06.15
This CVE's current EPSS score of 0.0020 is in the 34th percentile among its peer group of 1,516 CVEs.

Social Chatter

No social media mentions found for this CVE.

The average CVE in this peer group has 0.0 Twitter, 0.1 Reddit, 0.1 Bluesky, 0.1 Mastodon, and 0.2 GitHub mentions.

Media Mentions

The average CVE in this peer group has 0.4 InfoSec Media, 0.1 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Remediation records are not available for this CVE.

References

support.hp.com / us-en/document/ish_7709808-7709835-16/hpsbhf03835
ExploitVendor Advisory