Reference page — cumulative record through Wednesday, August 19, 2026 UTC. Reference pages update as the archive grows; only dated daily editions are immutable pages of record.
FreeRDP RDPEAR NDR ref-id aliasing causes client-side UAF/double-free and type confusion
AV AC PR UI S C I A CVSS EPSS %ile KEV
N L N R U H H H 8.8 .0043 36.1 —
AFFECTED
Product Versions Fixed
FreeRDP < 3.26.0 – —
TIMELINE
May 6 Reserved by GitHub_M
May 29 EXPLOIT PUBLISHED — CVE-2026-44422 (FreeRDP). Public exploit reference added.
May 29 Published (CNA: GitHub_M)
Jul 27 EXPLOIT PUBLISHED — CVE-2026-44422 (FreeRDP). Public exploit reference added.
Jul 27 RESCORED — CVE-2026-44422 (FreeRDP). CVSS 7.5 → 8.8 (NVD).
Description
FreeRDP is a free implementation of the Remote Desktop Protocol. Prior to 3.26.0, FreeRDP's RDPEAR NDR parser accepts one non-null NDR pointer ref-id for multiple logical pointer fields without tracking the pointed object's expected NDR type or ownership. When the same ref-id is reused across two pointer fields, the parser assigns the same heap object to both output fields. The generic destructor later walks each field independently and destroys/frees both pointers. This causes a malicious-server-triggerable heap use-after-free / double-free in the FreeRDP client's RDPEAR authentication-redirection path. This vulnerability is fixed in 3.26.0.
Lifecycle
Complete event history — 5 events, chronological
| Date | Event | Detail |
|---|
| May 6, 2026 | Reserved | Reserved by GitHub_M |
| May 29, 2026 | EXPLOIT PUBLISHED | EXPLOIT PUBLISHED — CVE-2026-44422 (FreeRDP). Public exploit reference added. |
| May 29, 2026 | Published | Published (CNA: GitHub_M) |
| July 27, 2026 | EXPLOIT PUBLISHED | EXPLOIT PUBLISHED — CVE-2026-44422 (FreeRDP). Public exploit reference added. |
| July 27, 2026 | RESCORED | RESCORED — CVE-2026-44422 (FreeRDP). CVSS 7.5 → 8.8 (NVD). |
Affected
Affected products and packages — 1 row
| Vendor | Product / Package | Ecosystem | Version introduced | Fixed |
|---|
| FreeRDP | FreeRDP | — | < 3.26.0 | — |
About this page
This is a reference page, not a dated page of record. It assembles the complete lifecycle of CVE-2026-44422 from the CVE Program record, NVD enrichment, the CISA KEV catalog, EPSS, and OSV advisories. The box score's numbers (CVSS, EPSS, KEV status) are current as of Wednesday, August 19, 2026 UTC and are re-derived as the archive grows; only dated daily editions are immutable pages of record. The authoritative source for this identifier is cve.org.