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TI-2021-16170 Aliases CVE-2021-38575GHSA-7cjm-mv56-4mg4

NetworkPkg/IScsiDxe has remotely exploitable buffer overflows.

Priority LOW 39CWE-124Published · Updated

Key facts

Attack vector
Network
Privileges required
None
User interaction
None
Attack complexity
High
Impact type
Code execution
Confidentiality · integrity · availability
High · High · High
Fix status
Partial Red Hat: 4 fixed, 1 without a fix

Attack profile from CVSS 3.1 · NVD. Fix status from CNA and Red Hat. Impact type from CWE-119 and the CVSS impact.

Summary

NetworkPkg/IScsiDxe has remotely exploitable buffer overflows.

Why it matters now

EPSS 0.01994 80th percentileScored 2026-11-07
Public exploit Yes 1 exploit referenceTagged by NVD
Fix Partial Red Hat: 4 advisoriesRed Hat: 4 fixed, 1 without a fix

SSVC decision points

Not available: CISA has not published SSVC decision points for this record.

Affected products

VendorProductAffected versionsFixed inStatusSource
TianoCoreEDK IIup to edk2-stable202105—No fix listedCNA
  • EDK II VendorTianoCore Affected up to edk2-stable202105 Fixed in — No fix listed CNA

CPE configurations NVD · 7

CPEVersionsRoleVendor
cpe:2.3:a:tianocore:edk2:*:*:*:*:*:*:*:*up to 202105VulnerableTianoCore
cpe:2.3:o:insyde:kernel:5.0:*:*:*:*:*:*:*5.0VulnerableInsyde Software
cpe:2.3:o:insyde:kernel:5.1:*:*:*:*:*:*:*5.1VulnerableInsyde Software
cpe:2.3:o:insyde:kernel:5.2:*:*:*:*:*:*:*5.2VulnerableInsyde Software
cpe:2.3:o:insyde:kernel:5.3:*:*:*:*:*:*:*5.3VulnerableInsyde Software
cpe:2.3:o:insyde:kernel:5.4:*:*:*:*:*:*:*5.4VulnerableInsyde Software
cpe:2.3:o:insyde:kernel:5.5:*:*:*:*:*:*:*5.5VulnerableInsyde Software
  • cpe:2.3:a:tianocore:edk2:*:*:*:*:*:*:*:* Versions up to 202105 Vulnerable ·TianoCore
  • cpe:2.3:o:insyde:kernel:5.0:*:*:*:*:*:*:* Versions 5.0 Vulnerable ·Insyde Software
  • cpe:2.3:o:insyde:kernel:5.1:*:*:*:*:*:*:* Versions 5.1 Vulnerable ·Insyde Software
  • cpe:2.3:o:insyde:kernel:5.2:*:*:*:*:*:*:* Versions 5.2 Vulnerable ·Insyde Software
  • cpe:2.3:o:insyde:kernel:5.3:*:*:*:*:*:*:* Versions 5.3 Vulnerable ·Insyde Software
  • cpe:2.3:o:insyde:kernel:5.4:*:*:*:*:*:*:* Versions 5.4 Vulnerable ·Insyde Software
  • cpe:2.3:o:insyde:kernel:5.5:*:*:*:*:*:*:* Versions 5.5 Vulnerable ·Insyde Software

Remediation

Red Hat 4 advisories

  • RHSA-2021:3369 Released 2021-08-31 · Red Hat rating Important
    edk2 security update
    • Red Hat Enterprise Linux AppStream EUS (v. 8.2) edk2-20190829git37eef91017ad-9.el8_2.1, edk2-aarch64-20190829git37eef91017ad-9.el8_2.1, edk2-ovmf-20190829git37eef91017ad-9.el8_2.1
  • RHSA-2021:3235 Released 2021-08-19 · Red Hat rating Important
    Red Hat Virtualization Host security and bug fix update [ovirt-4.4.7]
    • Red Hat Virtualization 4 Hypervisor for RHEL 8 redhat-virtualization-host-4.4.7-20210804.0.el8_4, redhat-virtualization-host-image-update-4.4.7-20210804.0.el8_4
  • RHSA-2021:3172 Released 2021-08-17 · Red Hat rating Important
    edk2 security update
    • Red Hat Enterprise Linux AppStream EUS (v. 8.1) edk2-20190308git89910a39dcfd-6.el8_1.1, edk2-aarch64-20190308git89910a39dcfd-6.el8_1.1, edk2-ovmf-20190308git89910a39dcfd-6.el8_1.1
Show 1 more Red Hat advisories
  • RHSA-2021:3066 Released 2021-08-10 · Red Hat rating Important
    edk2 security update
    • Red Hat Enterprise Linux AppStream (v. 8) edk2-20200602gitca407c7246bf-4.el8_4.2, edk2-aarch64-20200602gitca407c7246bf-4.el8_4.2, edk2-ovmf-20200602gitca407c7246bf-4.el8_4.2

Vendor assessments

Red Hat

Red Hat rating: Important. Red Hat's page for this CVE →

ProductStatusPlan or fix
Red Hat Enterprise Linux 7AffectedNo fix yet
Red Hat Enterprise Linux AppStream (v. 8)Fixed RHSA-2021:3066
Red Hat Enterprise Linux AppStream EUS (v. 8.1)Fixed RHSA-2021:3172
Red Hat Enterprise Linux AppStream EUS (v. 8.2)Fixed RHSA-2021:3369
Red Hat Virtualization 4 Hypervisor for RHEL 8Fixed RHSA-2021:3235
Not affected: 2 products
  • RHEL 8-based RHEV-H for RHEV 4 (build requirements)
  • Red Hat Enterprise Linux 9

Timeline

  1. 2026-10-02 Threatist record created from CVE-2021-38575
  2. 2026-10-03 Alias added: GHSA-7cjm-mv56-4mg4

References

Exploit 1

Advisory 1

  • TI-2026-79288 Out-of-bounds write in Google Brotli decoder KEVCVSS 4.0CRITICAL 9.2
  • TI-2023-24240 Buffer Overflow in EDK II Network Package CVSS 3.1HIGH 8.8
  • TI-2023-24238 Infinite loop in EDK II Network Package CVSS 3.1HIGH 7.5
  • TI-2023-24235 Buffer Overflow in EDK II Network Package CVSS 3.1HIGH 8.8
  • TI-2023-26565 An insecure default to allow UEFI Shell in EDK2 was left enabled in Ubuntu's EDK2. CVSS 3.1MEDIUM 6.7
  • TI-2023-24236 Out-of-Bounds Read in EDK II Network Package CVSS 3.1MEDIUM 6.5
See all 33 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences