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TI-2020-03522 Aliases CVE-2020-4031

Use-After-Free in gdi_SelectObject in FreeRDP

Priority LOW 36CWE-416Published · Updated

Key facts

Attack vector
Network
Privileges required
None
User interaction
None
Attack complexity
Low
Impact type
Denial of service
Confidentiality · integrity · availability
None · None · High
Fix status
Fixed

Attack profile from CVSS 3.1 · NVD. Fix status from CNA. Impact type from CWE-416 and the CVSS impact.

Summary

In FreeRDP before version 2.1.2, there is a use-after-free in gdi_SelectObject. All FreeRDP clients using compatibility mode with /relax-order-checks are affected. This is fixed in version 2.1.2.

Why it matters now

EPSS 0.01652 76th percentileScored 2026-11-07
Fix Fixed FreeRDP (FreeRDP): 2.1.2

SSVC decision points

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

Affected products

VendorProductAffected versionsFixed inStatusSource
FreeRDPFreeRDPbefore 2.1.22.1.2Patch availableCNA
  • FreeRDP VendorFreeRDP Affected before 2.1.2 Fixed in 2.1.2 Patch available CNA

CPE configurations NVD · 7

CPEVersionsRoleVendor
cpe:2.3:a:freerdp:freerdp:*:*:*:*:*:*:*:*before 2.1.2VulnerableFreeRDP
cpe:2.3:o:fedoraproject:fedora:31:*:*:*:*:*:*:*31VulnerableFedoraproject
cpe:2.3:o:fedoraproject:fedora:32:*:*:*:*:*:*:*32VulnerableFedoraproject
cpe:2.3:o:opensuse:leap:15.1:*:*:*:*:*:*:*15.1VulnerableopenSUSE
cpe:2.3:o:canonical:ubuntu_linux:18.04:*:*:*:esm:*:*:*18.04VulnerableCanonical
cpe:2.3:o:canonical:ubuntu_linux:20.04:*:*:*:lts:*:*:*20.04VulnerableCanonical
cpe:2.3:o:debian:debian_linux:10.0:*:*:*:*:*:*:*10.0VulnerableDebian
  • cpe:2.3:a:freerdp:freerdp:*:*:*:*:*:*:*:* Versions before 2.1.2 Vulnerable ·FreeRDP
  • cpe:2.3:o:fedoraproject:fedora:31:*:*:*:*:*:*:* Versions 31 Vulnerable ·Fedoraproject
  • cpe:2.3:o:fedoraproject:fedora:32:*:*:*:*:*:*:* Versions 32 Vulnerable ·Fedoraproject
  • cpe:2.3:o:opensuse:leap:15.1:*:*:*:*:*:*:* Versions 15.1 Vulnerable ·openSUSE
  • cpe:2.3:o:canonical:ubuntu_linux:18.04:*:*:*:esm:*:*:* Versions 18.04 Vulnerable ·Canonical
  • cpe:2.3:o:canonical:ubuntu_linux:20.04:*:*:*:lts:*:*:* Versions 20.04 Vulnerable ·Canonical
  • cpe:2.3:o:debian:debian_linux:10.0:*:*:*:*:*:*:* Versions 10.0 Vulnerable ·Debian

Remediation

  • Fix · CNA FreeRDP (FreeRDP) Fixed in 2.1.2

Fixed in the same release

Records fixed by the same vendor advisory or release, as the CNA lists them.

  • Advisory ·

    FreeRDP — FEDORA-2020-8d5f86e29a

    9 records Highest priority Priority LOW 9 LOW

    Other records, highest priority first

    • TI-2020-08972 OOB Read in license_read_new_or_upgrade_license_packet in FreeRDPPriority LOW 33
    • TI-2020-08969 Global OOB read in update_read_cache_bitmap_v3_order in FreeRDPPriority LOW 33
    • TI-2020-08971 Out-of-bound read in glyph_cache_put in FreeRDPPriority LOW 32
    Show all 9 records → Advisory →
  • Advisory ·

    FreeRDP — FEDORA-2020-a3432485db

    9 records Highest priority Priority LOW 9 LOW

    Other records, highest priority first

    • TI-2020-08972 OOB Read in license_read_new_or_upgrade_license_packet in FreeRDPPriority LOW 33
    • TI-2020-08969 Global OOB read in update_read_cache_bitmap_v3_order in FreeRDPPriority LOW 33
    • TI-2020-08971 Out-of-bound read in glyph_cache_put in FreeRDPPriority LOW 32
    Show all 9 records → Advisory →
Show 1 more group
  • Advisory ·

    FreeRDP — USN-4481-1

    9 records Highest priority Priority LOW 9 LOW

    Other records, highest priority first

    • TI-2020-08972 OOB Read in license_read_new_or_upgrade_license_packet in FreeRDPPriority LOW 33
    • TI-2020-08969 Global OOB read in update_read_cache_bitmap_v3_order in FreeRDPPriority LOW 33
    • TI-2020-08971 Out-of-bound read in glyph_cache_put in FreeRDPPriority LOW 32
    Show all 9 records → Advisory →

Vendor assessments

Red Hat

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

Not affected: 3 products
  • Red Hat Enterprise Linux 6
  • Red Hat Enterprise Linux 7
  • Red Hat Enterprise Linux 8

Timeline

  1. 2026-10-02 Threatist record created from CVE-2020-4031

References

Patch 1

Advisory 7

  • TI-2026-85092 Use-after-free in FreeRDP rdpgfx channel close handling CVSS 4.0CRITICAL 9.3
  • TI-2026-85091 Out-of-bounds write in FreeRDP proxy via bitmap cache v2 capability CVSS 4.0CRITICAL 9.3
  • TI-2026-24435 FreeRDP has a `size_t` underflow in ADPCM decoder leads to heap-buffer-overflow write CVSS 3.1CRITICAL 9.8
  • TI-2023-21373 Out-Of-Bounds Write in FreeRDP CVSS 3.1CRITICAL 9.8
  • TI-2022-08692 Server side NTLM does not properly check parameters in FreeRDP CVSS 3.1CRITICAL 9.1
  • TI-2023-21374 Out-Of-Bounds Read in FreeRDP CVSS 3.1CRITICAL 9.1
See all 336 →

Sources

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