Home/CVE/NetworkPkg/IScsiDxe has remotely exploitable buffer overflows.
CVE

CVE-2021-38575

NetworkPkg/IScsiDxe has remotely exploitable buffer overflows.

NetworkPkg/IScsiDxe has remotely exploitable buffer overflows.

HIGH · CVSS 8.1 EPSS 0.00532
Act now
  • Public exploit or PoC is available
  • CVSS base score ≥ 7.0
Sigma rules8 YARA rules0
⬡

Weakness Classification

CWE-119Improper Restriction of Operations within the Bounds of a Memory Buffer
CWE-124Buffer Underwrite ('Buffer Underflow')
▤

Affected Products & Versions

2
tianocore edk2<= 202105
insyde kernelall versions
⚠

Public Exploits & PoCs

1
pocbugzilla.tianocore.org · show_bug.cgi?id=3356bugzilla.tianocore.org
◈

Sigma Hunt Rules

8
Exact rules name this CVE ID. Product rules name an affected product in their title. Related rules cover techniques used by actors who exploited this CVE. Showing the most relevant matches; the complete related set is on the full drill-down.
producthighLoading of Kernel Module via Insmod
producthighLiveKD Kernel Memory Dump File Created
producthighKernel Memory Dump Via LiveKD
producthighSuspicious Kernel Dump Using Dtrace
producthighPUA - Kernel Driver Utility (KDU) Execution
producthighCodeIntegrity - Revoked Kernel Driver Loaded
▣

Scoring & Timeline

8.1
HIGH · CVSS v3.1 · infosec@edk2.groups.io
View on NVD
Attack Vector
Network Adjacent Local Physical
Attack Complexity
Low High
Privileges Required
None Low High
User Interaction
None Required
Scope
Unchanged Changed
Confidentiality
None Low High
Integrity
None Low High
Availability
None Low High
Published to NVD01 Dec 2021 · 06:15 PM
CVSS VectorCVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
⚑

Vendor Advisories

6
usnUSN-7060-1
usnUSN-5088-1
rhsaRHSA-2021:3235Important
rhsaRHSA-2021:3172Important
rhsaRHSA-2021:3066Important
🔗

References & Sources

2
Source URLs (vendor pages, mailing lists, write-ups). Exploit/PoC links are in their own section above to avoid duplication.
https://www.insyde.com/security-pledge/SA-2023025Third Party Advisory
https://lists.debian.org/debian-lts-announce/2025/06/msg00007.html
Intelligence Graph · click any node to traverse
CVETechnique ActorTool Family
drag to reposition · click any node to traverse · button top-right enlarges
External lookups - second-class, for what we don’t hold ourselves
NVDCVE.orgCISAVulnersExploit-DBGitHub PoCVulnCheck KEVGreyNoise
Vulnerabilities
CISA KEV catalog
CWE weaknesses
CAPEC attack patterns
Package vulnerabilities
Threat intelligence
Threat actors
Tools & malware
ATT&CK techniques
IOCs
Detection & defense
Sigma rules
YARA rules
Atomic Red Team tests
D3FEND countermeasures
Compliance
NIST 800-53
ISO 27001:2022
SOC 2 TSC
PCI-DSS v4.0
CIS Controls v8.1
About
All capabilities
Live statistics
Data sources
Privacy policy
Terms of service
threatengine.sh  ·  Open-source threat intelligence platform  ·  100+ authoritative sources  ·  Every fact traces to its origin