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 FreeRDP — Heap-buffer-overflow write in planar bitmap decoder
AV AC AT PR UI VC VI VA CVSS EPSS %ile KEV
N L P N P H H H 7.7 .0063 47.4 —
AFFECTED
Product Versions Fixed
FreeRDP < 3.26.0 – —
TIMELINE
May 13 Reserved by GitHub_M
May 29 EXPLOIT PUBLISHED — CVE-2026-45700 (FreeRDP). Public exploit reference added.
May 29 Published (CNA: GitHub_M)
Jul 29 EXPLOIT PUBLISHED — CVE-2026-45700 (FreeRDP). Public exploit reference added.
Description
FreeRDP is a free implementation of the Remote Desktop Protocol. Prior to 3.26.0, FreeRDP's planar bitmap decoder has an out-of-bounds heap write when decoding RLE planar data. In libfreerdp/codec/planar.c, freerdp_bitmap_decompress_planar() validates the X destination coordinate nXDst against the caller-provided destination stride (nDstStep) even when it is writing into the internal temp buffer pTempData. An attacker can bypass the check with a large nDstStep and a large nXDst, causing planar_decompress_plane_rle() to write past the end of pTempData. This vulnerability is fixed in 3.26.0.
Lifecycle
Complete event history — 4 events, chronological
| Date | Event | Detail |
|---|
| May 13, 2026 | Reserved | Reserved by GitHub_M |
| May 29, 2026 | EXPLOIT PUBLISHED | EXPLOIT PUBLISHED — CVE-2026-45700 (FreeRDP). Public exploit reference added. |
| May 29, 2026 | Published | Published (CNA: GitHub_M) |
| July 29, 2026 | EXPLOIT PUBLISHED | EXPLOIT PUBLISHED — CVE-2026-45700 (FreeRDP). Public exploit reference added. |
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-2026-45700 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.