Read the docs
TI-2026-71058 Aliases CVE-2026-109242GHSA-wx7m-cfxv-x2x7

Uninitialized heap memory disclosure in FreeRDP progressive codec

Priority MEDIUM 64CWE-908Published · Updated

Key facts

Attack vector
Network
Privileges required
None
User interaction
Passive
Attack complexity
Low
Attack requirements
None
Impact type
—
Confidentiality · integrity · availability
Low · None · High
Fix status
Partial Red Hat: 6 fixed, 2 without a fix

Attack profile from CVSS 4.0 · CNA. Fix status from CNA and Red Hat.

Summary

FreeRDP before 3.0.0 and from 3.6.0 before 3.32.0 renders uninitialized heap memory from progressive tiles that were never decoded, because the tile buffer is allocated without zeroing (CWE-908). A malicious RDP server can send a crafted tile sequence to paint heap bytes onscreen or abort the client process. A public exploit is linked in the references.

Written with Claude Haiku 5.5 from the sources below · 2026-11-03

Description from the CNA

FreeRDP before 3.0.0 and 3.6.0 before 3.32.0 renders uninitialized heap memory from un-decoded progressive tiles because the tile->current buffer is allocated without zeroing. A malicious RDP server can send a crafted WBT_TILE_FIRST then WBT_TILE_UPGRADE sequence to paint heap bytes onscreen or abort the client process.

Why it matters now

Exploitation Proof of concept CISA SSVC · not in CISA KEV
EPSS 0.00299 22nd percentileScored 2026-11-07
Public exploit Yes 1 exploit referenceTagged by NVD
Fix Partial FreeRDP (FreeRDP): 3.0.0, 3.32.0Red Hat: 3 advisoriesRed Hat: 6 fixed, 2 without a fix

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
Poc
Automatable
No
Technical impact
Partial

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

VendorProductAffected versionsFixed inStatusSource
FreeRDPFreeRDPbefore 3.0.0; 3.6.0 to before 3.32.03.0.0, 3.32.0Patch availableCNA
  • FreeRDP VendorFreeRDP Affected before 3.0.0; 3.6.0 to before 3.32.0 Fixed in 3.0.0, 3.32.0 Patch available CNA

CPE configurations NVD · 1

CPEVersionsRoleVendor
cpe:2.3:a:freerdp:freerdp:*:*:*:*:*:*:*:*before 3.0.0; 3.6.0 to before 3.32.0VulnerableFreeRDP
  • cpe:2.3:a:freerdp:freerdp:*:*:*:*:*:*:*:* Versions before 3.0.0; 3.6.0 to before 3.32.0 Vulnerable ·FreeRDP

Remediation

Upgrade FreeRDP to version 3.0.0 or 3.32.0. Red Hat fixes this in RHSA-2026:93592 for RHEL 9, RHSA-2026:94510 for RHEL 8 and RHSA-2026:94514 for RHEL 10. Red Hat has no fix plan for Red Hat Enterprise Linux 6 or 7.

Written with Claude Haiku 5.5 from the sources below · 2026-11-03

  • Fix · CNA FreeRDP (FreeRDP) Fixed in 3.0.0, 3.32.0

Red Hat 3 advisories

  • RHSA-2026:94510 Released 2026-11-03 · Red Hat rating Important
    freerdp security update
    • Red Hat Enterprise Linux AppStream (v. 8) freerdp-2:2.11.7-15.el8_10, freerdp-libs-2:2.11.7-15.el8_10, libwinpr-2:2.11.7-15.el8_10 +1
    • Red Hat Enterprise Linux CRB (v. 8) freerdp-devel-2:2.11.7-15.el8_10
  • RHSA-2026:94514 Released 2026-11-03 · Red Hat rating Important
    freerdp security, bug fix, and enhancement update
    • Red Hat Enterprise Linux AppStream (v. 10) freerdp-2:3.32.2-1.el10_2, freerdp-libs-2:3.32.2-1.el10_2, libwinpr-2:3.32.2-1.el10_2
    • Red Hat Enterprise Linux CodeReady Linux Builder (v. 10) freerdp-devel-2:3.32.2-1.el10_2, freerdp-server-2:3.32.2-1.el10_2, libwinpr-devel-2:3.32.2-1.el10_2
  • RHSA-2026:93592 Released 2026-11-02 · Red Hat rating Important
    freerdp security update
    • Red Hat Enterprise Linux AppStream (v. 9) freerdp-2:2.11.7-7.el9_8.9, freerdp-libs-2:2.11.7-7.el9_8.9, libwinpr-2:2.11.7-7.el9_8.9
    • Red Hat Enterprise Linux CodeReady Linux Builder (v. 9) freerdp-devel-2:2.11.7-7.el9_8.9, libwinpr-devel-2:2.11.7-7.el9_8.9

Vendor assessments

Red Hat

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

ProductStatusPlan or fix
Red Hat Enterprise Linux 6AffectedNo fix yet
Red Hat Enterprise Linux 7AffectedNo fix yet
Red Hat Enterprise Linux AppStream (v. 10)Fixed RHSA-2026:94514
Red Hat Enterprise Linux AppStream (v. 8)Fixed RHSA-2026:94510
Red Hat Enterprise Linux AppStream (v. 9)Fixed RHSA-2026:93592
Red Hat Enterprise Linux CRB (v. 8)Fixed RHSA-2026:94510
Red Hat Enterprise Linux CodeReady Linux Builder (v. 10)Fixed RHSA-2026:94514
Red Hat Enterprise Linux CodeReady Linux Builder (v. 9)Fixed RHSA-2026:93592

Timeline

  1. 2026-10-12 Threatist record created from CVE-2026-109242
  2. 2026-10-12 Alias added: GHSA-wx7m-cfxv-x2x7
  3. 2026-10-13 Affected versions changed · Red Hat
  4. 2026-10-13 CVSS score added · Red Hat
  5. 2026-10-13 Priority changed: MEDIUM → LOW
  6. 2026-10-15 Affected versions changed · Red Hat
  7. 2026-10-15 CISA SSVC decision points changed
  8. 2026-10-15 Priority changed: LOW → MEDIUM
  9. 2026-11-02 Fix available: Red Hat Enterprise Linux AppStream (v. 9), Red Hat Enterprise Linux CodeReady Linux Builder (v. 9) · Red Hat
  10. 2026-11-03 Fix available: RHSA-2026:93592 · Red Hat
  11. 2026-11-03 Fix available: RHSA-2026:94510 · Red Hat
  12. 2026-11-03 Fix available: RHSA-2026:94514 · Red Hat
  13. 2026-11-03 Fix available: Red Hat Enterprise Linux AppStream (v. 10), Red Hat Enterprise Linux AppStream (v. 8), Red Hat Enterprise Linux CRB (v. 8) +1 · Red Hat

References

Exploit 1

  • 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