CVE-2026-57156 — Security Box Score

CVE · referencelatest edition

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.

CVE-2026-57156HIGH

FreeRDP: Integer overflow leading to heap buffer overflow in Orders Delta Points parsing

  AV  AC  AT  PR  UI  VC  VI  VA   CVSS    EPSS   %ile   KEV
   N   L   N   N   A   H   H   H    8.6   .0042   35.0     —

AFFECTED
  Product  Versions    Fixed
  FreeRDP  < 3.28.0 –  —

TIMELINE
  Jun 24  Reserved by GitHub_M
  Jul 10  EXPLOIT PUBLISHED — CVE-2026-57156 (FreeRDP). Public exploit reference added.
  Jul 10  Published (CNA: GitHub_M)

CWE-122, CWE-190 · CNA: GitHub_M · CVSS v4.0 · 4 references · NVD status: Analyzed

Description

FreeRDP is a free implementation of the Remote Desktop Protocol. Prior to 3.28.0 on 32-bit builds, FreeRDP clients contain an integer overflow in update_read_delta_points in libfreerdp/core/orders.c when multiplying an attacker-controlled point count by sizeof(DELTA_POINT), allowing a malicious RDP peer to allocate an undersized heap buffer and then write beyond it during initialization. This issue is fixed in version 3.28.0.

Lifecycle

Complete event history — 3 events, chronological
Date	Event	Detail
June 24, 2026	Reserved	Reserved by GitHub_M
July 10, 2026	EXPLOIT PUBLISHED	EXPLOIT PUBLISHED — CVE-2026-57156 (FreeRDP). Public exploit reference added.
July 10, 2026	Published	Published (CNA: GitHub_M)

Affected

Affected products and packages — 1 row
Vendor	Product / Package	Ecosystem	Version introduced	Fixed
FreeRDP	FreeRDP	—	< 3.28.0	—

Weaknesses

CWE-122 · CWE-190

References (4)

https://github.com/FreeRDP/FreeRDP/commit/487f35daccb36a6224e530dcd8fa60850825f823 [Patch]
https://github.com/FreeRDP/FreeRDP/pull/12938 [Issue Tracking, Patch]
https://github.com/FreeRDP/FreeRDP/releases/tag/3.28.0 [Release Notes]
https://github.com/FreeRDP/FreeRDP/security/advisories/GHSA-v5wf-j8j4-77h7 [Exploit, Mitigation, Vendor Advisory]

Authoritative record: CVE-2026-57156 at cve.org

Vendors: freerdp

Weaknesses: CWE-122 · CWE-190

About this page

This is a reference page, not a dated page of record. It assembles the complete lifecycle of CVE-2026-57156 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.