Out-of-bounds read in FreeRDP - #VU134509
Published: June 15, 2026
Vulnerability identifier: #VU134509
CSH Severity: Medium
CVSS v4.0: CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:A/VC:L/VI:N/VA:L/SC:N/SI:N/SA:N/E:U/U:Green
CVE-ID: N/A
CWE-ID: CWE-125
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vendor: FreeRDP
Affected software:
FreeRDP
FreeRDP
Detailed vulnerability description
The vulnerability allows a remote attacker to disclose sensitive information and cause a denial of service.
The vulnerability exists due to an out-of-bounds read in glyph_cache_get() in the glyph cache when processing crafted glyph fragments from a malicious RDP server. A remote attacker can send crafted glyph orders that cause an out-of-bounds heap read to disclose sensitive information and cause a denial of service.
User interaction is required because the victim must connect to the attacker's RDP server.
Remediation
Install security update from vendor's website.