CVE-2026-444208.8HighCWE-122

CVE-2026-44420: FreeRDP cliprdr server heap-buffer-overflow via undersized capabilitySetLength in CB_CLIP_CAPS

FreeRDP

Vendor fix available · Affected: FreeRDP · Exploitation: possible (1 to 10%)

Not in CyberSIXT coverage yet: no article names this CVE. This page shows the public record.

4.6%probability of exploitation in the next 30 days

91st percentile

050100

Higher than 91% of scored CVEs

8.8HighCVSS 3.1

LowMediumHighCrit.

DescriptionCVE.org

FreeRDP is a free implementation of the Remote Desktop Protocol. Prior to 3.26.0, a malicious RDP client can trigger a heap-buffer-overflow write in FreeRDP's server-side clipboard (cliprdr) channel by sending a CB_CLIP_CAPS PDU with a too-small capabilitySetLength. This can crash the server process (remote DoS) and may be exploitable for code execution because it corrupts heap memory. This vulnerability is fixed in 3.26.0.

Affected products1

From the CVE record. A product or version that is not listed is unknown, not unaffected.

FreeRDP · FreeRDP< 3.26.0

On the Atlas

Every published CVE is on the CyberSIXT Atlas, grouped by weakness, vendor and month.

Open the Atlas

Exploitation: Possible (1 to 10%). EPSS between 1% and 10%.
CISA KEV: Not listed
Public check: No public nuclei template
Weakness: Heap-based Buffer Overflow · Memory Corruption
Vendor: FreeRDP
Published: May 2026
Band: Possible (1 to 10%), May 2026

CoverageNo articles yet

No CyberSIXT article names CVE-2026-44420 yet, so there is no coverage timeline, action brief or change log for it. Everything on this page comes from the public CVE record, CISA KEV, EPSS and the nuclei template index. Search the archive or see the CVEs in the news.