Out-of-Bounds Write Vulnerability in FreeRDP Remote Desktop Protocol Implementation
CVE-2026-45700

7.7HIGH

Key Information:

Vendor

Freerdp

Status
Freerdp
Vendor
CVE Published:
29 May 2026

What is CVE-2026-45700?

FreeRDP, a free implementation of the Remote Desktop Protocol, is vulnerable to an out-of-bounds heap write due to improper validation in its planar bitmap decoder. When processing RLE planar data, the function responsible for decompression allows an attacker to bypass coordinate validation, leading to potential memory corruption. This occurs when the destination coordinate exceeds the expected limits, enabled by large input values. This vulnerability has been addressed in FreeRDP version 3.26.0.

Affected Version(s)

FreeRDP < 3.26.0

References

https://github.com/FreeRDP/FreeRDP/security/advisories/GH...
x_refsource_CONFIRM

EPSS Score

6% chance of being exploited in the next 30 days.

CVSS V4

Score:
7.7
Severity:
HIGH
Confidentiality:
High
Integrity:
High
Availability:
High
Attack Vector:
Network
Attack Complexity:
Low
Attack Required:
Physical
Privileges Required:
Undefined
User Interaction:
Unknown

Timeline

  • Vulnerability published

  • Vulnerability Reserved

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