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TI-2026-19906 Aliases CVE-2026-24684

FreeRDP has a Heap-use-after-free in play_thread

Priority MEDIUM 45CWE-416Published · Updated

Key facts

Attack vector
Network
Privileges required
None
User interaction
None
Attack complexity
Low
Attack requirements
None
Impact type
Denial of service
Confidentiality · integrity · availability
None · None · High
Fix status
Partial Red Hat: 23 fixed, 1 without a fix

Attack profile from CVSS 4.0 · CNA. Fix status from CNA and Red Hat. Impact type from CWE-416 and the CVSS impact.

Summary

FreeRDP is a free implementation of the Remote Desktop Protocol. Prior to 3.22.0, the RDPSND async playback thread can process queued PDUs after the channel is closed and internal state is freed, leading to a use after free in rdpsnd_treat_wave. This vulnerability is fixed in 3.22.0.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00597 48th percentileScored 2026-11-07
Fix Partial FreeRDP (FreeRDP): 3.22.0Red Hat: 13 advisoriesRed Hat: 23 fixed, 1 without a fix

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
None
Automatable
Yes
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 3.22.03.22.0Patch availableCNA
  • FreeRDP VendorFreeRDP Affected before 3.22.0 Fixed in 3.22.0 Patch available CNA

CPE configurations NVD · 1

CPEVersionsRoleVendor
cpe:2.3:a:freerdp:freerdp:*:*:*:*:*:*:*:*before 3.22.0VulnerableFreeRDP
  • cpe:2.3:a:freerdp:freerdp:*:*:*:*:*:*:*:* Versions before 3.22.0 Vulnerable ·FreeRDP

Remediation

  • Fix · CNA FreeRDP (FreeRDP) Fixed in 3.22.0

Red Hat 13 advisories

  • RHSA-2026:19033 Released 2026-05-19 · Red Hat rating Important
    freerdp security update
    • Red Hat Enterprise Linux AppStream (v. 10) freerdp-2:3.10.3-12.el10_2.2, freerdp-libs-2:3.10.3-12.el10_2.2, libwinpr-2:3.10.3-12.el10_2.2
    • Red Hat Enterprise Linux CodeReady Linux Builder (v. 10) freerdp-devel-2:3.10.3-12.el10_2.2, freerdp-server-2:3.10.3-12.el10_2.2, libwinpr-devel-2:3.10.3-12.el10_2.2
  • RHSA-2026:11323 Released 2026-04-28 · Red Hat rating Important
    freerdp security update
    • Red Hat Enterprise Linux Server (v. 7 ELS) freerdp-2.1.1-5.el7_9.7, freerdp-libs-2.1.1-5.el7_9.7, freerdp-libs-2.1.1-5.el7_9.7.ppc +2
    • Red Hat Enterprise Linux Server Optional (v. 7 ELS) freerdp-devel-2.1.1-5.el7_9.7, freerdp-devel-2.1.1-5.el7_9.7.ppc, libwinpr-devel-2.1.1-5.el7_9.7 +1
  • RHSA-2026:10951 Released 2026-04-27 · Red Hat rating Important
    freerdp security update
    • Red Hat Enterprise Linux AppStream AUS (v.8.6) freerdp-2:2.2.0-7.el8_6.5, freerdp-libs-2:2.2.0-7.el8_6.5, libwinpr-2:2.2.0-7.el8_6.5 +1
    • Red Hat Enterprise Linux AppStream E4S (v.8.6) freerdp-2:2.2.0-7.el8_6.5, freerdp-libs-2:2.2.0-7.el8_6.5, libwinpr-2:2.2.0-7.el8_6.5 +1
    • Red Hat Enterprise Linux AppStream TUS (v.8.6) freerdp-2:2.2.0-7.el8_6.5, freerdp-libs-2:2.2.0-7.el8_6.5, libwinpr-2:2.2.0-7.el8_6.5 +1
Show 10 more Red Hat advisories
  • RHSA-2026:10735 Released 2026-04-27 · Red Hat rating Important
    freerdp security update
    • Red Hat Enterprise Linux AppStream AUS (v.8.4) freerdp-2:2.2.0-12.el8_4, freerdp-libs-2:2.2.0-12.el8_4, libwinpr-2:2.2.0-12.el8_4 +1
    • Red Hat Enterprise Linux AppStream EUS EXTENSION (v.8.4) freerdp-2:2.2.0-12.el8_4, freerdp-libs-2:2.2.0-12.el8_4, libwinpr-2:2.2.0-12.el8_4 +1
  • RHSA-2026:10076 Released 2026-04-23 · Red Hat rating Important
    freerdp security update
    • Red Hat Enterprise Linux AppStream E4S (v.8.8) freerdp-2:2.2.0-12.el8_8.5, freerdp-libs-2:2.2.0-12.el8_8.5, libwinpr-2:2.2.0-12.el8_8.5 +1
    • Red Hat Enterprise Linux AppStream TUS (v.8.8) freerdp-2:2.2.0-12.el8_8.5, freerdp-libs-2:2.2.0-12.el8_8.5, libwinpr-2:2.2.0-12.el8_8.5 +1
  • RHSA-2026:9641 Released 2026-04-22 · Red Hat rating Important
    freerdp security update
    • Red Hat Enterprise Linux AppStream E4S (v.9.2) freerdp-2:2.4.1-6.el9_2.6, freerdp-libs-2:2.4.1-6.el9_2.6, libwinpr-2:2.4.1-6.el9_2.6
  • RHSA-2026:9640 Released 2026-04-22 · Red Hat rating Important
    freerdp security update
    • Red Hat Enterprise Linux AppStream E4S (v.9.0) freerdp-2:2.4.1-3.el9_0.4, freerdp-libs-2:2.4.1-3.el9_0.4, libwinpr-2:2.4.1-3.el9_0.4
  • RHSA-2026:6958 Released 2026-04-08 · Red Hat rating Important
    freerdp security update
    • Red Hat CodeReady Linux Builder EUS (v.9.4) freerdp-devel-2:2.11.2-1.el9_4.5, libwinpr-devel-2:2.11.2-1.el9_4.5
    • Red Hat Enterprise Linux AppStream EUS (v.9.4) freerdp-2:2.11.2-1.el9_4.5, freerdp-libs-2:2.11.2-1.el9_4.5, libwinpr-2:2.11.2-1.el9_4.5
  • RHSA-2026:6918 Released 2026-04-07 · Red Hat rating Important
    freerdp security update
    • Red Hat Enterprise Linux AppStream (v. 8) freerdp-2:2.11.7-6.el8_10, freerdp-libs-2:2.11.7-6.el8_10, libwinpr-2:2.11.7-6.el8_10 +1
    • Red Hat Enterprise Linux CRB (v. 8) freerdp-devel-2:2.11.7-6.el8_10
  • RHSA-2026:6799 Released 2026-04-07 · Red Hat rating Important
    freerdp security update
    • Red Hat Enterprise Linux AppStream (v. 10) freerdp-2:3.10.3-5.el10_1.5, freerdp-libs-2:3.10.3-5.el10_1.5, libwinpr-2:3.10.3-5.el10_1.5
    • Red Hat Enterprise Linux CodeReady Linux Builder (v. 10) freerdp-devel-2:3.10.3-5.el10_1.5, freerdp-server-2:3.10.3-5.el10_1.5, libwinpr-devel-2:3.10.3-5.el10_1.5
  • RHSA-2026:6743 Released 2026-04-07 · Red Hat rating Important
    freerdp security update
    • Red Hat Enterprise Linux AppStream EUS (v. 10.0) freerdp-2:3.10.3-3.el10_0.5, freerdp-libs-2:3.10.3-3.el10_0.5, libwinpr-2:3.10.3-3.el10_0.5
    • Red Hat Enterprise Linux CodeReady Linux Builder EUS (v. 10.0) freerdp-devel-2:3.10.3-3.el10_0.5, freerdp-server-2:3.10.3-3.el10_0.5, libwinpr-devel-2:3.10.3-3.el10_0.5
  • RHSA-2026:6727 Released 2026-04-07 · Red Hat rating Important
    freerdp security update
    • Red Hat CodeReady Linux Builder EUS (v.9.6) freerdp-devel-2:2.11.7-1.el9_6.7, libwinpr-devel-2:2.11.7-1.el9_6.7
    • Red Hat Enterprise Linux AppStream EUS (v.9.6) freerdp-2:2.11.7-1.el9_6.7, freerdp-libs-2:2.11.7-1.el9_6.7, libwinpr-2:2.11.7-1.el9_6.7
  • RHSA-2026:6340 Released 2026-04-01 · Red Hat rating Important
    freerdp security update
    • Red Hat Enterprise Linux AppStream (v. 9) freerdp-2:2.11.7-1.el9_7.5, freerdp-libs-2:2.11.7-1.el9_7.5, libwinpr-2:2.11.7-1.el9_7.5
    • Red Hat Enterprise Linux CodeReady Linux Builder (v. 9) freerdp-devel-2:2.11.7-1.el9_7.5, libwinpr-devel-2:2.11.7-1.el9_7.5

Vendor assessments

Red Hat

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

ProductStatusPlan or fix
Red Hat Enterprise Linux 6AffectedNo fix planned: Out of support scope
Red Hat CodeReady Linux Builder EUS (v.9.4)Fixed RHSA-2026:6958
Red Hat CodeReady Linux Builder EUS (v.9.6)Fixed RHSA-2026:6727
Red Hat Enterprise Linux AppStream (v. 10)Fixed RHSA-2026:19033, RHSA-2026:6799
Red Hat Enterprise Linux AppStream (v. 8)Fixed RHSA-2026:6918
Red Hat Enterprise Linux AppStream (v. 9)Fixed RHSA-2026:6340
Red Hat Enterprise Linux AppStream AUS (v.8.4)Fixed RHSA-2026:10735
Red Hat Enterprise Linux AppStream AUS (v.8.6)Fixed RHSA-2026:10951
Red Hat Enterprise Linux AppStream E4S (v.8.6)Fixed RHSA-2026:10951
Red Hat Enterprise Linux AppStream E4S (v.8.8)Fixed RHSA-2026:10076
Red Hat Enterprise Linux AppStream E4S (v.9.0)Fixed RHSA-2026:9640
Red Hat Enterprise Linux AppStream E4S (v.9.2)Fixed RHSA-2026:9641
Red Hat Enterprise Linux AppStream EUS (v. 10.0)Fixed RHSA-2026:6743
Red Hat Enterprise Linux AppStream EUS (v.9.4)Fixed RHSA-2026:6958
Red Hat Enterprise Linux AppStream EUS (v.9.6)Fixed RHSA-2026:6727
Red Hat Enterprise Linux AppStream EUS EXTENSION (v.8.4)Fixed RHSA-2026:10735
Red Hat Enterprise Linux AppStream TUS (v.8.6)Fixed RHSA-2026:10951
Red Hat Enterprise Linux AppStream TUS (v.8.8)Fixed RHSA-2026:10076
Red Hat Enterprise Linux CRB (v. 8)Fixed RHSA-2026:6918
Red Hat Enterprise Linux CodeReady Linux Builder (v. 10)Fixed RHSA-2026:19033, RHSA-2026:6799
Red Hat Enterprise Linux CodeReady Linux Builder (v. 9)Fixed RHSA-2026:6340
Red Hat Enterprise Linux CodeReady Linux Builder EUS (v. 10.0)Fixed RHSA-2026:6743
Red Hat Enterprise Linux Server (v. 7 ELS)Fixed RHSA-2026:11323
Red Hat Enterprise Linux Server Optional (v. 7 ELS)Fixed RHSA-2026:11323

Timeline

  1. 2026-10-02 Threatist record created from CVE-2026-24684

References

Patch 3

  • 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