TI-2026-62096 Aliases CVE-2026-91961 GHSA-fqjp-p646-qwhr

FreeRDP before 3.31.0 Denial of Service via URBDRC

LOW 31CWE-617Published 2026-09-15 · Updated 2026-09-18

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: 5 without a fix

Attack profile from CVSS 4.0 · CNA. Fix status from CNA and Red Hat. Impact type from CWE-617.

Summary

FreeRDP before 3.31.0 contains a denial-of-service vulnerability in the URBDRC control-transfer request path that fails to validate OutputBufferSize before forwarding to the libusb backend. A malicious RDP server can send a control-transfer request with OutputBufferSize set to 65536, triggering a reachable assertion that terminates the client process.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV

EPSS 0.00371 31st percentileScored 2026-11-07

Fix Partial FreeRDP (FreeRDP): 3.31.0Red Hat: 5 without a fix

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation: None
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

Vendor	Product	Affected versions	Fixed in	Status	Source
FreeRDP	FreeRDP	before 3.31.0	3.31.0	Patch available	CNA

FreeRDP VendorFreeRDP Affected before 3.31.0 Fixed in 3.31.0 Patch available CNA

CPE configurations NVD · 1

CPE	Versions	Role	Vendor
cpe:2.3:a:freerdp:freerdp::::::::	before 3.31.0	Vulnerable	FreeRDP

cpe:2.3:a:freerdp:freerdp:*:*:*:*:*:*:*:* Versions before 3.31.0 Vulnerable ·FreeRDP

Remediation

Fix · CNA FreeRDP (FreeRDP) Fixed in 3.31.0

Fixed in the same release

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

Release · 2026-09-15
FreeRDP 3.31.0
20 records Highest priority Priority HIGH 1 HIGH, 12 MEDIUM, 7 LOW
Other records, highest priority first
- TI-2026-62090 FreeRDP before 3.31.0 Denial of Service via Desktop DimensionsPriority HIGH 75
- TI-2026-62098 FreeRDP 2.0.0 through 3.30.0 Uninitialized Heap Memory Disclosure via urbdrcPriority MEDIUM 64
- TI-2026-62095 FreeRDP before 3.31.0 Integer Overflow Double FreePriority MEDIUM 64
Show all 20 records →

Vendor assessments

Red Hat

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

Product	Status	Plan or fix
Red Hat Enterprise Linux 10	Affected	No fix yet
Red Hat Enterprise Linux 6	Affected	No fix planned: Out of support scope
Red Hat Enterprise Linux 7	Affected	No fix yet
Red Hat Enterprise Linux 8	Affected	No fix yet
Red Hat Enterprise Linux 9	Affected	No fix yet

Timeline

2026-10-02 Threatist record created from CVE-2026-91961
2026-10-03 Alias added: GHSA-fqjp-p646-qwhr

References

Advisory 1

GitHub Security Advisory (GHSA-w9qg-g24r-77f6)

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