Public vulnerability disclosure

CVE-2026-121403

FreeRDP before 3.32.2 Denial of Service via Malformed Drive IRP

publishedCWE-770

FreeRDP before 3.32.2 contains a denial of service vulnerability where a malformed drive DEVICE_IOREQUEST with a truncated IRP_MJ_CREATE body silently kills the drive worker. A malicious RDP server can send such an IRP then post further requests that accumulate unbounded in the IrpQueue, exhausting memory and causing session availability loss.

Technical severity5.3 mediumCVSS 4.0 · CNA: VulnCheck
Published2026-11-03Source updated 2026-11-03
Collected2026-11-031 attributed source

Fixes and workarounds

No remediation reported in collected sources.

Missing remediation information is not evidence that no patch exists.

Affected products and versions

Affected products, source version ranges and reporting authorities
ProductVersionsAuthority
FreeRDP
FreeRDP
≥ 0; < 3.32.2 (affected, semver)
3.32.2 (unaffected, semver)
Other versions: unaffected
CNA: VulnCheck

Version ranges are source assertions. Check the vendor advisory and your installed configuration before determining exposure.

CVSS assessments

CVSS scores, vectors and reporting authorities
Version / scoreVectorAuthority
4.0 / 5.3
medium
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:N/VI:N/VA:L/SC:N/SI:N/SA:NCNA: VulnCheck
3.1 / 4.3
medium
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:LCNA: VulnCheck

Exploit evidence

No exploit evidence in collected sources. This is not proof of no exploitation.

References

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