CVE-2026-109679

FreeRDP 3.0.0-beta4 before 3.32.0 contains a NULL pointer dereference in arm_handle_request_ok when an ARM endpoint returns an empty HTTP 200 body. Attackers controlling the configured ARM gateway can return a zero-length body to pass NULL to strnlen and crash the connecting client.

CVSS 4.0

6.0CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:P/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N

CVSS 3.1

5.3CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:N/I:N/A:H

EPSS

0.3% chance of exploitation in the next 30 days; higher than 22% of CVEs (scores of 2026-10-25)

CWE

CWE-476

Published

2026-10-13

Modified

2026-10-20

Record from

the NVD, synced 2026-10-21

Affected

• freerdp:freerdp

References

• https://github.com/FreeRDP/FreeRDP/security/advisories/GHSA-qjwp-c855-hc69
• https://www.vulncheck.com/advisories/freerdp-3.0.0-beta4-before-3.32.0-null-pointer-crash-via-arm-response
• https://github.com/FreeRDP/FreeRDP/security/advisories/GHSA-qjwp-c855-hc69

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