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TI-2026-74519 Aliases CVE-2026-110829

FreeRDP rdpsnd Fragment Null Pointer Dereference Enables Denial of Service

Priority MEDIUM 64CWE-476Published · Updated

Key facts

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

Attack profile from CVSS 4.0 · CNA. Fix status from CNA and Red Hat. Impact type from CWE-476.

Summary

FreeRDP versions from 3.0.0 before 3.32.0 contain a null pointer dereference (CWE-476) in the rdpsnd channel, which crashes the client when a fragment sets CHANNEL_FLAG_LAST without CHANNEL_FLAG_FIRST. A malicious RDP server can exploit this by sending a malformed rdpsnd PDU on a fresh channel, causing denial of service. CISA's SSVC assessment rates exploitation as PoC, not automatable, with partial technical impact, and the vulnerability is not in CISA KEV. Red Hat rates it Moderate and reports no fix available for Red Hat Enterprise Linux 10.

Written with Claude Haiku 5.5 from the sources below · 2026-10-28

Description from the CNA

FreeRDP versions from 3.0.0 before 3.32.0 contain a null pointer dereference in the rdpsnd channel when a fragment sets CHANNEL_FLAG_LAST without CHANNEL_FLAG_FIRST. A malicious RDP server can send a malformed rdpsnd PDU on a fresh channel to crash the client and cause denial of service.

Why it matters now

Exploitation Proof of concept CISA SSVC · not in CISA KEV
EPSS 0.00312 24th percentileScored 2026-11-07
Public exploit Yes 1 exploit referenceTagged by NVD
Fix Partial FreeRDP (FreeRDP): 3.32.0Red Hat: 1 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
FreeRDPFreeRDP3.0.0 to before 3.32.03.32.0Patch availableCNA
  • FreeRDP VendorFreeRDP Affected 3.0.0 to before 3.32.0 Fixed in 3.32.0 Patch available CNA

CPE configurations NVD · 1

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

Remediation

Upgrade FreeRDP to version 3.32.0 or later, which contains the fix. Red Hat Enterprise Linux 10 has no fix available yet.

Written with Claude Haiku 5.5 from the sources below · 2026-10-28

  • Fix · CNA FreeRDP (FreeRDP) Fixed in 3.32.0

Fixed in the same release

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

  • Release ·

    FreeRDP 3.32.0

    11 records Highest priority Priority HIGH 1 HIGH, 9 MEDIUM, 1 LOW

    Other records, highest priority first

    • TI-2026-74520 FreeRDP serial device handling exhausts file descriptorsPriority HIGH 69
    • TI-2026-74529 Heap out-of-bounds write in FreeRDP JPEG clipboard conversionPriority MEDIUM 64
    • TI-2026-74526 FreeRDP Infinite Loop DoS via Gateway Content-TypePriority MEDIUM 64
    Show all 11 records →

Vendor assessments

Red Hat

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

ProductStatusPlan or fix
Red Hat Enterprise Linux 10AffectedNo fix yet: Fix deferred
Not affected: 4 products
  • Red Hat Enterprise Linux 6
  • Red Hat Enterprise Linux 7
  • Red Hat Enterprise Linux 8
  • Red Hat Enterprise Linux 9

Timeline

  1. 2026-10-15 Threatist record created from CVE-2026-110829
  2. 2026-10-15 CISA SSVC decision points changed
  3. 2026-10-16 Affected versions changed · Red Hat
  4. 2026-10-16 CVSS score added · 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