A stack buffer overflow vulnerability discovered in AsfSecureBootDxe in Insyde InsydeH2O with kernel 5.0 through 5.5 allows attackers to run
A stack buffer overflow vulnerability discovered in AsfSecureBootDxe in Insyde InsydeH2O with kernel 5.0 through 5.5 allows attackers to run arbitrary code execution during the DXE phase.
- Published
- Nov 1, 2023
- Updated
- Jun 17, 2026
- EPSS
- 0.5% · 40th percentile
- CWE
- CWE-787
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Report tools
Action score
39
Monitor
Low priority for now.
- CVSS
- 39 / 40 · 9.8 / 10
- CISA KEV
- 0 / 30 · Not listed
- EPSS
- 0 / 30 · 0.5%
CISA SSVC decision
- Exploitation
- none
- Automatable
- no
- Technical impact
- total
Vulnrichment: CISA's decision-tree inputs.
Affected systems
| Vendor | Product | CPE |
|---|---|---|
| insyde | insydeh2o | cpe:2.3:a:insyde:insydeh2o |
| intel | core i5-13420h | cpe:2.3:h:intel:core_i5-13420h |
| intel | b760 | cpe:2.3:h:intel:b760 |
| intel | c262 | cpe:2.3:h:intel:c262 |
| intel | c266 | cpe:2.3:h:intel:c266 |
| intel | core i3-1305u | cpe:2.3:h:intel:core_i3-1305u |
| intel | core i3-13100 | cpe:2.3:h:intel:core_i3-13100 |
| intel | core i3-13100e | cpe:2.3:h:intel:core_i3-13100e |
| intel | core i3-13100f | cpe:2.3:h:intel:core_i3-13100f |
| intel | core i3-13100t | cpe:2.3:h:intel:core_i3-13100t |
| intel | core i3-13100te | cpe:2.3:h:intel:core_i3-13100te |
| intel | core i3-1315u | cpe:2.3:h:intel:core_i3-1315u |
and 188 more
Affected versions
NVD version ranges (for catalog products). Add the product to your stack with a version and matching uses these.
- insyde insydeh2o05.42.37.0031
- insyde insydeh2o05.43.06.0021
- insyde insydeh2o05.44.30.0022
- insyde insydeh2o05.44.34.0055
- insyde insydeh2o05.44.45.0017
- insyde insydeh2o05.45.24.0039
- insyde insydeh2o05.45.38.0005
- insyde insydeh2o05.53.22.0008
- insyde insydeh2o05.53.23.0011
- insyde insydeh2o05.53.23.0014
- insyde insydeh2o05.53.28.0013
Same product
insyde: all recordsOther highest-scoring records for the same primary product.
- CVE-2021-41842An issue was discovered in AtaLegacySmm in the kernel 5.0 before 05.08.46, 5.1 before 05.16.46, 5.2 before 05.26.46, 5.3 before 05.35.46, 5.39Monitor
- CVE-2023-22613An issue was discovered in IhisiSmm in Insyde InsydeH2O with kernel 5.0 through 5.5.35Monitor
- CVE-2023-22614An issue was discovered in ChipsetSvcSmm in Insyde InsydeH2O with kernel 5.0 through 5.5.35Monitor
- CVE-2023-22612An issue was discovered in IhisiSmm in Insyde InsydeH2O with kernel 5.0 through 5.5.35Monitor
- CVE-2023-22615An issue was discovered in IhisiSmm in Insyde InsydeH2O with kernel 5.0 through 5.5.33Monitor
- CVE-2022-36448An issue was discovered in Insyde InsydeH2O with kernel 5.0 through 5.5.32Monitor
Remediation
Which version to upgrade to
Fix versions compiled from the vendor, package registries and Microsoft. Verify the vendor's note before upgrading.
No fix version is recorded for this entry. Check the references for vendor advisories.
Exploit status
No known public exploit
No public exploit has been observed yet. That doesn't mean you're safe, only that the bar is a little higher.
Research context
For pentesters and researchers: attack profile, score disagreement, timeline, patch commits, credits, variant and chain candidates, bug bounty scope. All derived from existing data; no exploit code.
Timeline
From publication to today: proof of concept, Metasploit module, CISA KEV and fix record. Dates are as reported by the sources.
No dated events beyond publication.
FIRST EPSS daily score; only changes of 0.01 or more are recorded (step chart).
Patch and commit links
Commit, PR and diff links among the references. A starting point for patch-diffing and variant hunting; fixes, not exploits.
No commit or PR link among the references.
Credits
All researchersFinders, reporters and analysts named in the CNA record. Click a name for that researcher’s other records.
No credits in the CNA record.
Variant candidates
Same product, same weakness class, within 18 months. If the patch missed the root cause, the sibling bug is here.
- CVE-2023-22612204 days apartAn issue was discovered in IhisiSmm in Insyde InsydeH2O with kernel 5.0 through 5.5.35Monitor
- CVE-2023-22613204 days apartAn issue was discovered in IhisiSmm in Insyde InsydeH2O with kernel 5.0 through 5.5.35Monitor
- CVE-2023-22614204 days apartAn issue was discovered in ChipsetSvcSmm in Insyde InsydeH2O with kernel 5.0 through 5.5.35Monitor
- CVE-2023-22615204 days apartAn issue was discovered in IhisiSmm in Insyde InsydeH2O with kernel 5.0 through 5.5.33Monitor
- CVE-2022-35895406 days apartAn issue was discovered in Insyde InsydeH2O with kernel 5.0 through 5.5.32Monitor
- CVE-2023-392831 days apartAn SMM memory corruption vulnerability in the SMM driver (SMRAM write) in CsmInt10HookSmm in Insyde InsydeH2O with kernel 5.0 through 5.5 al31Monitor
Chain candidates
An authentication bypass and a privilege-requiring bug in the same product, published close together: combined they may become an unauthenticated path.
—
Bug bounty scope
The product’s vendor appears in a public program. Matched by name; verify the scope text in the program.
Technical details
Attack conditions
- Anyone who can reach it over the internet can trigger it.
- No account or password is required.
- No user action is required.
- No special conditions are required; it is repeatable.
If successful
- Confidentiality
- high · data can be read
- Integrity
- high · data or configuration can be modified
- Availability
- high · the service can be disrupted
- Attack vector
- Network
- Attack complexity
- Low
- Privileges required
- None
- User interaction
- None
- Scope
- Unchanged
- Confidentiality impact
- High
- Integrity impact
- High
- Availability impact
- High
Weakness class (CWE)
CWE-787 · Out-of-bounds WriteCVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
nvd-primary
Attack context
MITRE CAPEC attack patterns and ATT&CK techniques for this weakness class (CWE). A starting point for detection rules and threat hunting.
MITRE has no CAPEC/ATT&CK mapping for this CWE.
Noroxi analysis
No Noroxi analysis for this record yet
We don't hand-write analysis for all 385,000+ vulnerabilities; that wouldn't be honest. For notable, high-impact vulnerabilities our team writes the mechanism, detection and remediation steps.
We use this product, ask for helpChange log
No changes recorded on tracked fields yet. Score, KEV, exploit maturity and fix status changes appear here.
References
Vendor advisories and official records. Exploit/PoC links are deliberately left out.