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Attributed metadata history

REPORTPUBLIC METADATA

VU#553437: InsydeH2O IHISI SMM is vulnerable to unsafe memory write operations

Overview An Out-of-bounds Write vulnerability in the InsydeH2O IHISI software used by HP PC BIOS can allow a local attacker with OS kernel privileges to perform arbitrary physical memory writes, including writes to System Management RAM (SMRAM). Because the vulnerable code executes in System Management Mode (SMM), successful exploitation can allow an attacker to modify SMM-protected memory and pot

Reference details

Source category
Government
Report title
VU#553437: InsydeH2O IHISI SMM is vulnerable to unsafe memory write operations
First reported
Oct 01, 2026 14:33 UTC
Last reported
Oct 01, 2026 14:33 UTC
Catalog updated
Oct 08, 2026 03:42 UTC
Record ID
0ed86218b38c3a3519073c230a9d04da7f41d30e334062b09d49673206636a46

CVEs mentioned by sources

Published indicators

Network indicators are visibly defanged. This page does not make them clickable or send them to another service.

No validated file hashes or network indicators are stored for this record.

Source observations

src_cd638cf167c7c119d6

Source-provided label
Not reported
Evidence class
mentioned in report
Confidence
Not reported
Observed
Oct 01, 2026 14:33 UTC
Retrieved
Oct 08, 2026 03:42 UTC

This record contains metadata and attribution only. It does not host, download, unpack, render, or execute malware samples.

Feed collection status

Sources represented on this page. Publication and observation dates describe the content; successful batch dates describe local collection. A recent batch does not certify complete coverage or current provider availability.

1 sources: 0 stale, 0 needing attention, 0 paused, 1 unverified.

Review source update dates and status
  • src_cd638cf167c7c119d6Collection status unverifiedLast successful batch: Unverified

Stale means older than twice the recorded collection interval, with a minimum of one hour; without an interval, the threshold is 24 hours. Cached content remains available while a feed is stale, paused, or unverified.